Imaging dose. Medical search. Frequent questions

At the 96th annual meeting of the Radiological Society of North America (RSNA) in Chicago, Royal Philips Electronics (NYSE: PHG, AEX: PHI) announced today the new Philips Ingenuity CT (computed tomography) platform, an innovative technology that will help redefine low dose imaging. (news-medical.net)
Objective: To evaluate the use of inflation-fixed lung tissue for emphysema quantification with computed tomography (CT) and 3He magnetic resonance (MR) diffusion imaging. (monash.edu)
Computed tomography (CT) is one the most used imaging modalities due to its advancements in acquisition time and diagnostic capability. (duke.edu)
The software provides optimized analyzation of vascular anatomy and pathology and aids in determining treatment paths from a set of Computed Tomography Angiographic images. (setonimaging.com)
Background: Computed tomography pulmonary angiography (CTPA) is the preferred imaging modality for diagnosis of patients with suspected pulmonary embolism (PE). (edu.au)
The highlighted topics include basic aspects of biological dosimetry and its limitations in the range of low radiation doses, and main patterns of in vivo induction of radiation biomarkers in clinical exposure scenarios, occurring in X-ray diagnostics, computed tomography , interventional radiology , low dose radiotherapy , and nuclear medicine (internally administered 131I and other radiopharmaceuticals ). (bvsalud.org)
Prof. Jeff Fessler and Prof. Yong Long (PhD EE:Systems '11) of the University of Michigan-Shanghai Jiao Tong University (UM-SJTU) Joint Institute are collaborating on a project to develop a dramatically improved approach to low-dose X-ray Computed Tomography (CT) image formation by extracting and using information from a big-data corpus of regular dose X-Ray CT images. (umich.edu)
free radiation dose from adult and pediatric multidetector computed tomography medical radiology diagnostic imaging For this environment there Posts a 3-star migration to the focused j for vision about the artificial post of web grassroots across Other definitions. (philfox.com)
The computed tomography dose index (CTDI) is a commonly used radiation exposure index in X-ray computed tomography (CT), first defined in 1981. (wikipedia.org)
In early 2011 NIOSH posted a blog entry commenting on the preliminary results from the National Lung Screening Trial (NLST), funded by the National Cancer Institute, that found a 20.3% reduction in deaths from lung cancer among current or former heavy smokers who were screened with low-dose helical computed tomography (CT) versus those screened by chest X-ray (CXR). (cdc.gov)

This results in biologically effective doses that may be two to three times higher than with conventional radiotherapy (RT). (hospitalhealthcare.com)
The purpose of this work was to evaluate the potential of functional imaging with 18 F-FDG PET, 18 F-fluoromisonidazole PET, diffusion-weighted MRI, and dynamic contrast-enhanced MRI to provide an appropriate and reliable biologic target for dose painting in radiotherapy for head and neck squamous cell carcinoma (HNSCC). (snmjournals.org)
These results confirm the added value of 18 F-FDG PET and 18 F-fluoromisonidazole PET for radiotherapy planning of HNSCC and suggest the potential of diffusion-weighted and dynamic enhanced MRI for dose painting and early response assessment. (snmjournals.org)
As intensity-modulated radiotherapy permits lowering the dose to the organs at risk outside the target volume, the maximum dose becomes restricted by the presence of dose-limiting structures within the target volume, such as cartilage, connective tissue, nerves, and bone. (snmjournals.org)
The most commonly used functional imaging modality for radiotherapy planning is undoubtedly 18 F-FDG PET ( 4 ). (snmjournals.org)
In the second phase of the project , 15 patients have been enrolled , 10 of which received an additional radiotherapy dose boost (5.4 Gy in 3 fractions) , but to date it has not been possible to recover the data of the histological examination for all patients undergoing the boost. (unina.it)
Planet Onco Dose is a comprehensive software platform dedicated to medical diagnosis aid, therapy response assessment aid, contouring for radiotherapy and internal dosimetry computation, using molecular imaging modalities. (itnonline.com)
How to distribute the dose in radiotherapy according to time and space? (francelifeimaging.fr)
Response to "comment on 'It is not appropriate to "deform" dose along with deformable image registration in adaptive radiotherapy'" Med. (elsevierpure.com)

Functional imaging, that is, modalities that offer information on factors that influence treatment outcome (e.g., tumor burden, proliferation, and hypoxia), is expected to provide the biologic target volume for such dose painting ( 2 , 3 ). (snmjournals.org)
Cytogenetic assays appeared to be a valuable tool for individualized quantifying radiation effects in patients , with high capability for assessing genotoxicity of various medical exposure modalities and providing meaningful radiation dose estimates for prognoses of radiation -related cancer risk . (bvsalud.org)

With the Ingenuity CT, we can obtain critical images while knowing we've done everything possible to protect our patients in the long term by reducing dose. (news-medical.net)
This retrospective multicenter study included 51 patients with cochlear implants and postoperative imaging via temporal bone cone-beam CT ( n = 32 ears) or multidetector CT ( n = 19 ears) between 2012 and 2017. (ajnr.org)
Cone-beam CT in patients with cochlear implants provides images with higher spatial resolution and fewer metallic artifacts than multidetector CT at a relatively lower radiation dose. (ajnr.org)
Results from several trials suggest that pretreatment 18 F-FDG uptake correlates with outcome in HNSCC patients and can therefore indicate a valuable target for dose escalation ( 7 , 8 ). (snmjournals.org)
Frequent somatostatin receptor PET, for example, 64 Cu-DOTATATE PET, is part of the diagnostic work-up of patients with neuroendocrine neoplasms (NENs), resulting in high accumulated radiation doses. (snmjournals.org)
We implemented a parameter-transferred Wasserstein generative adversarial network for patients with NENs on simulated low-dose 64 Cu-DOTATATE PET images corresponding to 25% (PET 25% ), or about 48 MBq, of the injected activity of the reference full dose (PET 100% ), or about 191 MBq, to generate denoised PET images (PET AI ). (snmjournals.org)
Feasibility of the approach was tested using real data from 30 acute ischaemic stroke patients in conjunction with low dose simulation. (physiciansweekly.com)
In this study was decided to use the Diffusion weighted (DW) magnetic resonance (MR) imaging and the ADC maps as a tool for evaluating patients and dividing them into two categories good e bad responder. (unina.it)
Data from patients who underwent multiple myeloma scanning were retrospectively analyzed for radiation dose and image quality assessment. (duke.edu)
The Optima CT660 system is a 64-slice scanner that allows for fast, high-quality acquisition at optimized dose for patients young and old, large and small and can be used across a wide spectrum of procedures including brain, chest, abdomen, orthopedic, angiography and more. (setonimaging.com)
Prognostic value of normal ultra-low-dose myocardial perfusion imaging with a cadmium-zinc-telluride camera: prospective study in 1400 patients with 39-months of follow-up. (escardio.org)
Prospective ECG-triggering is regarded as one of the most effective approaches for reduction of radiation dose to patients during coronary CT angiography (CCTA). (edu.au)
I think that's true because ILD has the beauty of imaging with CT scans to diagnose patients. (medscape.com)
Our aim was to compare CT images from native, nephrographic and excretory phases using image quality criteria as well as the detection of positive pathological findings in CT Urography, to explore if the radiation burden to the younger group of patients or patients with negative outcomes can be reduced. (biomedcentral.com)
CT Urography (CTU) has emerged as the modality of choice in imaging of the abdomen in patients with urinary tract diseases due to its high sensitivity and specificity [ 1 ]. (biomedcentral.com)
Although it comes with a high radiation dose penalty, the benefits of CT imaging outweigh the risk for many of these patients. (biomedcentral.com)
Patients presented with haematuria or acute flank pain usually undergo diagnostic imaging to rule out any serious conditions underlining upper urinary tract disease such as urolithiasis, renal cell cancer or upper urinary tract urothelial cell carcinoma (UUT-UCC) [ 4 ]. (biomedcentral.com)
The standardized care pathway (SCP) led to general recommendations of the use of medical imaging in diagnostics of urinary tract disease for patients with macroscopic hematuria who are ≥40 years (revised to ≥50 years in 2018), but even younger patients with risk factors are investigated [ 6 ]. (biomedcentral.com)
Approximately 20-30% of these patients with symptoms of visible blood have negative outcomes and are being subjected to diagnostic imaging tests and radiation related risks based on the presence of macro-hematuria [ 6 ]. (biomedcentral.com)
Clinical Applications of Biological Dosimetry in Patients Exposed to Low Dose Radiation Due to Radiological, Imaging or Nuclear Medicine Procedures. (bvsalud.org)
This review summarized current data on the use of biological dosimetry methods in patients undergoing various medical irradiations to low doses. (bvsalud.org)
Additionally, several specific issues, examined by biodosimetry techniques , are analysed, such as contrast media effect, radiation response in pediatric patients , impact of magnetic resonance imaging , evaluation of radioprotectors, detection of patients ' abnormal intrinsic radiosensitivity and dose estimation in persons involved in medical radiation incidents. (bvsalud.org)
New York- While debate continues on whether one dose of COVID-19 vaccine is sufficient, in some cases, with products designed to be provided in a two-dose series, a study maintains that a single shot is enough for patients who have recovered from novel coronavirus. (uspharmacist.com)
By not having to get the second dose of the mRNA vaccines, researchers point out that recovered COVID-19 patients also would be spared unnecessary side effects, which appear significantly more severe in people with some level of pre-existing immunity. (uspharmacist.com)
5,6 A recent assessment of patient ability to properly self-administer asthma rescue medication found that only 7% of patients surveyed were able to operate a pressurized metered-dose inhaler (pMDI) per the approved protocol. (uspharmacist.com)
The pending federal mandate that providers consult appropriate use criteria (AUC) prior to ordering advanced diagnostic imaging for Medicare patients can only extend this trend. (acr.org)
We will continue to work to optimize medical radiation dose and ensure that patients have access to the right care, at the right time, for the right reason," said Thorwarth. (acr.org)
Ultra-low dose CT scans that provide superior image quality could not only benefit patients, but they could open up entirely new clinical applications. (umich.edu)
In fact, CT scans are now are responsible for nearly 50% of the radiation exposure from medical imaging in the U.S. Unfortunately, the ionizing radiation in the form of X-rays used in CT scans is energetic enough to directly or indirectly damage DNA, putting patients at a higher risk for radiation-induced cancer. (umich.edu)
To achieve an even greater reduction in the radiation to achieve ULDCT scans, Prof. Fessler and Prof. Long plan to take an entirely new approach, one that makes use of the vast archive of existing CT images of patients with similar ailments. (umich.edu)
These efforts come in response to recently published research[1,2] demonstrating that adherence to clinical nuclear imaging guidelines for reduced patient radiation exposure is variably implemented, resulting in administration of higher doses than necessary for some patients undergoing myocardial perfusion studies. (itnonline.com)
The aims of this study were to establish the optimal time point for renal imaging after [18F]PSMA-1007 injection, to investigate the reproducibility of split renal uptake measurements, and to determine the margin for reduction in administered activity.MethodsTwelve adult male patients with prostate cancer underwent [18F]PSMA-1007 PET-CT at 8 time points up to 5.5 h post-injection (p.i. (lu.se)
To assess whether high-dose coronavirus disease (COVID-19) convalescent plasma (CCP) transfusion may benefit patients with severe COVID-19, we conducted a multicenter randomized trial in Brazil. (cdc.gov)
We conclude that high-dose CCP transfused within 10 days of symptom onset provided no benefit for patients with severe COVID-19. (cdc.gov)
The CTDI and absorbed dose may differ by more than a factor of two for small patients such as children. (wikipedia.org)
AIM: Use of diffusion tensor imaging (DTI) to investigate the longitudinal changes in normal-appearing brain tissue in glioblastoma patients undergoing modern arc-based RT with volumetric modulated arc therapy (VMAT) or helical tomotherapy. (lu.se)
Imaging findings and cognitive function in glioblastoma patients. (lu.se)

Retrieved on December 05, 2023 from https://www.news-medical.net/news/20101130/Philips-launches-new-Ingenuity-CT-platform-for-optimizing-low-dose-imaging.aspx. (news-medical.net)
The « Tumor Targeting, Imaging Radiotherapies » network of the Cancéropole Grand Ouest is pleased to announce its sisteenth international workshop which will take place from the 4th to the 7th of October 2023 in Erquy, West of France . (francelifeimaging.fr)
The 2023 topic will focus on how to optimize dose-response relationships in the field of molecular and external beam radiotherapies in Oncology with the contribution of imaging. (francelifeimaging.fr)
In a study presented at the Society of Nuclear Medicine and Molecular Imaging 2023 Annual Meeting, early stratification with 177 Lu-SPECT/CT allowed men responding to treatment to take a "treatment holiday" and allowed those not responding the option to switch to another treatment. (axisimagingnews.com)
To reduce the increasing number of zero dose children in the Eastern Cape Province, the National Department of Health , planned a four-day Zero Dose training program for the province, fully funded by the WHO Regional Office for Africa , from 26-29 September 2023. (who.int)

Another exclusive to the Ingenuity platform is SyncRight, a new tool designed to enhance communications between the scanner and the injector creating consistent image quality from patient to patient, up to 15 percent reduction in injected contrast per patient, providing better visualization of vascular structures, resulting in fewer repeat exams. (news-medical.net)
Compared with conventional atomic-resolution STEM imaging techniques, the mixed-state ptychographic approach simultaneously provides a four-times-faster acquisition, with double the information limit at the same dose, or up to a fifty-fold reduction in dose at the same resolution. (nature.com)
IR has recently demonstrated its capacity to reduce noise and permit dose reduction in abdominal and thoracic CT applications. (ajnr.org)
CTDI, 42.3) dose reduction. (ajnr.org)
Linear regression analysis of CNR against tube current suggests that standard CNR may be obtained until approximately 20.4% dose reduction when IR is used. (ajnr.org)
In the past decade, various dose-reduction strategies, such as automated tube current modulation, low voltage scanning, and noise-reduction filters, have been explored but could not prevent a steady increase of average effective dose with advanced scanner technology. (ajnr.org)
4 - 9 Unfortunately, the most straightforward technique in lowering dose, notably the reduction of tube current, is associated with unacceptable increase of image noise. (ajnr.org)
Efficient radiation dose reduction in whole-brain CT perfusion imaging using a 3D GAN: Performance and clinical feasibility. (physiciansweekly.com)
Dose reduction in cerebral CT perfusion (CTP) imaging is desirable but is accompanied by an increase in noise that can compromise the image quality and the accuracy of image-based haemodynamic modelling used for clinical decision support in acute ischaemic stroke. (physiciansweekly.com)
The utility of the noise addition tool was applied to dose reduction of multiple myeloma skeletal CT protocol. (duke.edu)
OBJECTIVE: This study aimed (1) to perform a systematic review on scanning parameters and contrast medium (CM) reduction methods used in prospectively ECG-triggered low tube voltage coronary CT angiography (CCTA), (2) to compare the achievable dose reduction and image quality, and (3) to propose appropriate scanning techniques and CM administration methods. (edu.au)
Advances in knowledge: The suggested appropriate scanning parameters and CM reduction methods can be used to help users in achieving diagnostic image quality with reduced radiation dose. (edu.au)
The choice of panel phosphor technologies can facilitate a dose reduction of up to 60% as well as improved ima. (examvuedigitalxray.com)
The uniquely developed noise reduction circuit reduces noise in the image. (fujifilm.com)
The Image Gently ® and Image Wisely ® awareness campaigns, radiology and industry collaboration to advance low-dose technologies, growing use of the ACR Dose Index Registry , and mandatory accreditation of imaging facilities under Medicare are among the primary factors that produced a 15-20 percent reduction in medical radiation dose that Americans receive. (acr.org)
Dose reduction strategies based on weight-based radiotracer dosing, thoughtful selection of radiotracer, stress-only imaging when appropriate, software innovations, state-of-the-art SPECT systems and utilization of PET for myocardial perfusion imaging are all methods supported by ASNC to achieve quality cardiac imaging at the lowest radiation exposure. (itnonline.com)
Nationwide Laboratory Adherence to Myocardial Perfusion Imaging Radiation Dose Reduction Practices: A Report From the Intersocietal Accreditation Commission Data Repository. (itnonline.com)
The aims of this study were to establish the optimal time point for renal imaging after [18F]PSMA-1007 injection, to investigate the reproducibility of split renal uptake measurements, and to determine the margin for reduction in administered activity. (lu.se)
Global and national strategic and guiding documents which are aligned to zero dose reduction. (who.int)
the NLST is the first randomized trial to show a significant reduction in mortality from lung cancer with low-dose CT screening. (cdc.gov)

Cranial ultrasound (CUS) is an alternative imaging modality. (medscape.com)
Three-dimensional (3D) craniofacial stereophotogrammetry has gained some popularity as a reliable, noninvasive, radiation-free imaging modality. (medscape.com)

free radiation dose from adult and pediatric multidetector computed Humanities: is a concerned record of sexual editions to Explore managed by water for previous rainfall of each IT 've. (philfox.com)

Accuracy of the method was evaluated using standard image quality metrics and the extent to which the clinical content and lesion characteristics of the denoised CTP data were preserved. (physiciansweekly.com)
Our Clinical Dose Optimization Service™ (CDOS) enables you to adjust CT and fluoroscopy doses for accurate diagnoses without compromising patient safety. (landauer.com)
Identify protocols to adjust clinical dose through a trusted workflow model now in place at hundreds of hospitals across the United States. (landauer.com)
See how we assisted LifePoint's 76 Hospitals Standardized 3 CT Protocols in 3 Months in this LANDAUER Talks video from the 2017 Clinical Dose Symposium. (landauer.com)
Image quality was assessed for four specific renal image criteria from the European guidelines, together with pathological assessment in three categories: renal, other abdominal, and incidental findings without clinical significance. (biomedcentral.com)
Studies at the University of Virginia , the Institute for Clinical Systems Improvement , Partners Healthcare and elsewhere prove that AUC-based clinical decision support use improves imaging appropriateness - which can prevent unnecessary radiation exposure and lower cost. (acr.org)
Motivated by the success of MBIR in lowering CT dose and the promising impact of big data on improving image quality of ULDCT imaging, this project aims to incorporate prior knowledge extracted from big data collections of clinical CT images into the design of the MBIR methods for X-ray CT. (umich.edu)
Study participants included 125 men who were treated in a clinical program with six weekly doses of 177 Lu-PSMA. (axisimagingnews.com)
The Diagnostic Imaging Physics Residency will admit one new resident per year with a July 1 st start date and will provide two years of post-graduate clinical training. (ohsu.edu)
OHSU is the state's only academic medical center and will provide residents with the unique opportunity to gain professional experience in areas of teaching and presenting, with numerous opportunities throughout the two-year program to teach graduate students, medical residents, radiologic technologists, and hospital staff on topics ranging from basic imaging physics to clinical fluoroscopy safety. (ohsu.edu)
Residency training and education will be under the supervision of experienced medical physicists and is designed to provide extensive clinical experience and prepare residents to practice diagnostic imaging physics independently. (ohsu.edu)

June 20, 2019 - DOSIsoft announced it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to market Planet Onco Dose software for its oncology and yttrium-90 (Y-90) microsphere SIRT 3-D dosimetry components. (itnonline.com)
CE marked since March 2016, Planet Onco Dose is the first fully integrated imaging and personalized 3-D dosimetry platform for radionuclide-based therapies, according to the company. (itnonline.com)

January 5, 2017 - Working in concert, the American Society of Nuclear Cardiology (ASNC), the Intersocietal Accreditation Commission (IAC)'s Nuclear/PET accreditation division and the Society of Nuclear Medicine in Molecular Imaging (SNMMI) are mandating optimized radiation doses in conjunction with the nuclear cardiology studies (i.e., myocardial perfusion imaging) performed throughout the United States and beyond. (itnonline.com)
In February 2016, ASNC published guidelines for myocardial perfusion SPECT imaging, ASNC Imaging Guidelines for SPECT Nuclear Cardiology Procedures: Stress Protocols and Tracers, which include a chart entitled "Current SPECT Myocardial Perfusion Imaging Protocols: Recommended Radiopharmaceutical Activities and Their Corresponding Radiation Effective Doses. (itnonline.com)
In accordance with the IAC's mission of improving healthcare through accreditation®, the IAC Nuclear/PET Board of Directors has made the decision to mandate specific dose ranges for myocardial perfusion imaging studies to decrease radiation exposure while maintaining image quality, thus ensuring patient safety. (itnonline.com)

The main problem is that, as a consequence of Poisson statistics, the required illumination dose is inversely proportional to the square of the spatial resolution 7 , and thus improving spatial resolution means quadratically higher doses. (nature.com)
With FBP, increased spatial resolution is directly correlated with increased image noise and is traded against noise by application of different reconstruction kernels. (ajnr.org)
To a certain extent, IR allows decoupling of spatial resolution and image noise and may thus be used to lower noise at standard or improved resolution of images. (ajnr.org)

iDose4, Philips' newest generation iterative reconstruction technique adds improvement in image quality and fast reconstruction times, while reducing dose. (news-medical.net)
The Optima CT660 is equipped with the exclusive ASiR (Adaptive Statistical Iterative Reconstruction) low dose reconstruction technology that can help physicians significantly reduce dose while maintaining the high image quality and low contrast detectability they need for accurate diagnosis. (setonimaging.com)
To reduce radiation dose in children, several strategies and techniques are available, including iterative reconstruction techniques. (medscape.com)

The present study sought to determine whether doses of methamphetamine in the range of those used recreationally by humans produce brain dopamine (DA) neurotoxicity in baboons and to ascertain whether positron emission tomography (PET) imaging with the DA transporter (DAT) ligand [ 11 C]WIN-35,428 ([ 11 C]2β-carbomethoxy-3β-(4-fluorophenyl)-tropane) could be used to detect methamphetamine-induced DAT loss in living primates. (jneurosci.org)

SNMMI is an international scientific and medical organization dedicated to raising public awareness about nuclear medicine and molecular imaging. (itnonline.com)
SNMMI's more than 17,000 members set the standard for molecular imaging and nuclear medicine practice by creating guidelines, sharing information through journals and meetings and leading advocacy on key issues that affect molecular imaging. (itnonline.com)

Urolithiasis is a common health problem with a high recurrent rate requiring considerable radiological imaging resources for this population, many of which are younger than 50 years of age [ 5 ]. (biomedcentral.com)

The tool demonstrated its potential in estimating reduced dose protocols. (duke.edu)
It is important to review pressurized metered-dose inhaler (pMDI) protocols as defined by the literature and manufacturers, as well as to understand how the technique employed in each step affects the delivered dose. (uspharmacist.com)

In the past, because the combination of great image quality, low dose and fast reconstruction times has been a challenge for the industry, CT scanning has often been about trade-offs. (news-medical.net)
The mixed-state reconstruction gains importance especially when simultaneously pursuing high resolution, high precision and large field-of-view imaging. (nature.com)
10 , 11 In IR, a correction loop is introduced in the image reconstruction process. (ajnr.org)
If the image reconstruction were perfect, no deviation between measured and calculated projections would be observed. (ajnr.org)
In reality, due to the approximate nature of FBP reconstruction typically used for image reconstruction, there is a deviation between measured and calculated projections. (ajnr.org)
A thorax anthropomorphic phantom and a multi-sized image quality phantom were scanned at different dose levels and reconstruction settings. (duke.edu)
The images were obtained at high and low doses from various CT examinations and different reconstruction settings. (duke.edu)
This generated a dataset of 30,000 labeled CT images captured using various tomographic reconstruction configurations, accurately reflecting human interpretation. (medimaging.net)
Currently most commercial CT scanners use a technique called filter-back projection (FBP) for image reconstruction. (umich.edu)
Model-based image reconstruction (MBIR) methods, also known as statistical image reconstruction methods, improve the ability to produce high-quality and accurate images, while greatly reducing patient exposure to potentially harmful levels of radiation. (umich.edu)

The software provides tools for post-treatment absorbed dose calculation and evaluation on PET and SPECT images. (itnonline.com)
ASNC is committed to supporting nuclear cardiac imaging labs' use of the lowest radiotracer dose that maintains diagnostic image quality, in conjunction with application of appropriate use criteria (AUC) and the use of count recovery software for general SPECT cameras, new solid state SPECT cameras, and PET to provide the right test for the right patient," said Brian G. Abbott, M.D., FACC, MASNC, ASNC president. (itnonline.com)
The men were imaged with 177 Lu-SPECT/CT after each dose. (axisimagingnews.com)
After the second dose, researchers analyzed the men's prostate specific antigen (PSA) levels and the 177 Lu-SPECT response to determine ongoing management. (axisimagingnews.com)
In Response Group 3 (31 percent), men saw a rise in PSA levels and had progressive disease on SPECT imaging. (axisimagingnews.com)

To reduce these margins from something like 5-10mm to 0-3mm, SBRT makes use of the latest RT planning, irradiation, patient immobilisation and imaging technologies, and takes advantage of the still-potent doses in the fall-off region around the tumour edge. (hospitalhealthcare.com)
The risk of normal tissue toxicity is further reduced with irradiation techniques that use beams from many angles to spread out the entry dose. (hospitalhealthcare.com)

2 Intraoperative imaging is usually reserved for cases with severe anatomic abnormalities and during minimally invasive procedures to guide the electrode placement and reduce the duration of the operation using fluoroscopy or mobile radiography. (ajnr.org)

To ensure that facilities seeking nuclear cardiology accreditation focus their awareness on the patient dose they are administering, the September 2016 published revision to the IAC Standards and Guidelines for Nuclear/PET Accreditation is inclusive of required administered dose ranges as recommended by the 2016 ASNC guidelines. (itnonline.com)
Speaking on behalf of the SNMMI, President Sally W. Schwarz, MS, RPh, BCNP, stated, "Working together, we can more effectively ensure that health care providers meet accreditation requirements and follow dose guidelines for nuclear cardiology. (itnonline.com)
Frederic H. Fahey, DSc, FSNMMI, who serves on SNMMI's Dose Optimization Task Force, added, "Accreditation requirements and dosing guidelines emphasize both patient safety and quality images. (itnonline.com)

Usually both MR imaging and multidetector CT (MDCT) are used for assessment. (ajnr.org)
The phantom contained cylindrical inserts of varying diameters and contrasts, and the observers had to identify whether an object was present in the image as well as indicate the level of confidence in their assessment. (medimaging.net)
The researchers are optimistic that with further efforts, their model can become a viable mechanism for automated CT image quality assessment. (medimaging.net)
Image quality and pathology assessment in CT Urography: when is the low-dose series sufficient? (biomedcentral.com)

By monitoring early-response biomarkers in men undergoing 177 Lu-PSMA prostate cancer treatment, physicians can personalize dosing intervals, significantly improving patient outcomes. (axisimagingnews.com)
PET-derived binding potential values, used to index striatal DAT density, were significantly decreased after methamphetamine, with larger decreases occurring after higher methamphetamine doses. (jneurosci.org)

Renal [18F]PSMA-1007 PET-CT is feasible, with imaging 2 h p.i., acceptable split renal uptake variability, and effective dose and acquisition time comparable to those of [99mTc]Tc-DMSA scintigraphy. (lu.se)

A third product, an adenovirus vector vaccine, Janssen (Johnson & Johnson), got an EUA in February after this study was completed and requires only a single dose. (uspharmacist.com)
We showed that the antibody response to the first vaccine dose in people with pre-existing immunity is equal to or even exceeds the response in uninfected people after the second dose," explained coauthor Viviana Simon, MD, PhD, professor in the Departments of Microbiology and Medicine (Infectious Diseases) in the Icahn School of Medicine at Mount Sinai. (uspharmacist.com)
For that reason, we believe that a single dose of vaccine is sufficient for people who have already been infected by SARS-CoV-2 to reach immunity. (uspharmacist.com)
In their study of 109 individuals with and without previous SARS-CoV-2 immunity, researchers determined that the first group developed antibodies within days of the first dose of vaccine at a rate 10 to 20 times higher than those who were uninfected, and at a more than tenfold rate after the second dose. (uspharmacist.com)
These findings suggest that a single dose of vaccine elicits a very rapid immune response in individuals who have tested positive for COVID-19," pointed out coauthor Florian Krammer, PhD, of Mount Sinai. (uspharmacist.com)
Systemic reactions were tested after the first dose of vaccine in a second group of 231 individuals, 83 of whom had tested positive for COVID-19, and 148 who had not. (uspharmacist.com)
We show that neutralization of the VOC compared to a reference isolate of the original circulating lineage, B, is reduced: more profoundly against B.1.351 than for B.1.1.7, and in responses to infection or a single dose of vaccine than to a second dose of vaccine. (nature.com)
Importantly, high magnitude T cell responses are generated after two vaccine doses, with the majority of the T cell response directed against epitopes that are conserved between the prototype isolate B and the VOC. (nature.com)
The increasing immunity gaps due to the increasing zero dose children has contributed to the recent multiple vaccine preventable disease outbreaks which the country has battled, and this warrants urgent interventions to decrease morbidity and mortality due to VPDs. (who.int)
Note the 14-dose box of rabies vaccine vials from which this vial had originated. (cdc.gov)

Currently, a standardized dosing interval is used for 177 Lu-PSMA treatment," says Andrew Nguyen, MBBS, FRACP, AANMS, senior staff specialist in the Department of Theranostics and Nuclear Medicine at St. Vincent's Hospital in Sydney, Australia. (axisimagingnews.com)

Planet Onco Dose is intended to assist the user in the diagnosis, quantification and verification of radiation doses received by tissues as a result of administering permanent Y90 microsphere implants, as well as in therapy response follow-up. (itnonline.com)
CT scanning and nuclear imaging have revolutionized diagnosis and treatment, almost eliminating the need for once-common exploratory surgeries and many other invasive and potentially risky procedures. (harvard.edu)
CT provides high-resolution images of anatomical structures for diagnosis and management of human diseases and disorders. (umich.edu)
Recent studies show that Janus Fe3O4-TiO2 nanoparticle s (NPs) have potential applications as a multifunctional agent of magnetic resonance imaging (MRI) and photodynamic therapy (PDT) for the diagnosis and therapy of cancer. (cdc.gov)
In the low-dose CT group, 649 cancers were diagnosed after a positive screening test, 44 after a negative screening test, and 367 among participants who either missed the screening or received the diagnosis after their trial screening phase was over. (cdc.gov)

The launch of the Philips Ingenuity CT, the next step towards fully optimizing low-dose imaging, is proof of Philips' commitment to eliminating the need to make trade-offs in patient care,' said Gene Saragnese, general manager, Imaging Systems, for Philips Healthcare. (news-medical.net)
High-quality diagnostic images at the optimal radiation dose are important for good patient care. (landauer.com)
As part of your CDOS subscription, a Qualified Medical Physicist will actively participate in your quarterly Patient Dose Review Committee meetings. (landauer.com)
Therefore, great effort in research has been focused on minimizing patient dose by generating low-dose simulations. (duke.edu)
The tool was evaluated in terms of noise magnitude and texture through phantom and patient images studies. (duke.edu)
The second study of evaluating the tool was performed using patient images. (duke.edu)
The tool was used to simulate the patient images at different low-dose levels. (duke.edu)
Seton Imaging has further solidified its commitment to higher diagnostic quality images at a lower dose to the patient with the addition of GE Healthcare's leading CT imaging technology, the Optima CT660. (setonimaging.com)
To reduce the radiation burden in certain patient groups, the LDCT could be considered a suitable alternative as a first line imaging method. (biomedcentral.com)
Optimisation is not only about patient dose and image quality but also about the diagnostic task at hand, i.e. the correct examination technique for a specific diagnostic enquiry in accordance to the ALARA (radiation dose as low as reasonably achievable) and AHARA (image quality as high as reasonably achievable) principles [ 2 , 3 ]. (biomedcentral.com)
The overall goal of the Diagnostic Imaging Physics Residency Program at Oregon Health & Science University (OHSU) is to produce highly trained medical physicists who will improve patient care by optimizing imaging equipment procurement, usage, and maintenance, and who will advance imaging science by engaging in interdisciplinary team research. (ohsu.edu)
The unit of CTDI is the gray (Gy) and it can be used in conjunction with patient size to estimate the absorbed dose. (wikipedia.org)
The absorbed dose to water D w ( z ) {\displaystyle D_{w}(z)} (used to refer back to patient dose) is typically measured in a cylindrical head (16 cm diameter) or body (32 cm diameter) phantom of length approximately 14-15 cm. (wikipedia.org)
In helical CT, the pitch of the machine - a factor of the speed at which the couch travels through the gantry and the tube rotation frequency - also impacts on patient dose. (wikipedia.org)

This procedure can be generalized by adopting reference CT images obtained by scanning specially designed phantoms that comprise inserts of varying sizes and contrasts, which represent standardized abnormalities. (medimaging.net)
Among those who did have complications, 16 participants screened with low-dose helical CT (10 of whom had lung cancer) and 10 X-ray participants (all with lung cancer) died within 60 days of a follow-up invasive diagnostic procedure. (cdc.gov)

The Ingenuity CT system maintains outstanding image quality at the absolute lowest possible dose without wasting a moment of valuable clinician time. (news-medical.net)
We compared cone-beam CT with multidetector CT to assess postoperative implant placement and delineate finer anatomic structures, image quality, and radiation dose used. (ajnr.org)
Previous investigations found that reducing 64 Cu-DOTATATE activity to below 50 MBq results in inadequate image quality and lesion detection. (snmjournals.org)
We therefore investigated whether image quality and lesion detection of less than 50 MBq of 64 Cu-DOTATATE PET could be restored using artificial intelligence (AI). (snmjournals.org)
The purpose of our study was to assess the potential benefit of IR in head CT by comparing objective and subjective image quality with standard FBP at various dose levels. (ajnr.org)
Compared with FBP, IR resulted in lower image noise ( P ≤ .02), higher CNR ( P ≤ .03), and improved subjective image quality ( P ≤ .002) at all dose levels. (ajnr.org)
Compared with conventional FBP, IR of head CT is associated with significant improvement of objective and subjective IQ and may allow dose reductions in the range of 20% without compromising standard image quality. (ajnr.org)
The technical evolution of MDCT has not only revolutionized image quality and scanning speed but has also dramatically increased the number of CT examinations in the industrialized world. (ajnr.org)
Higher Quality CT Images at a Lower Dose! (setonimaging.com)
In practical terms, this principle requires a trade-off since decreasing the level of radiation administered typically results in poorer CT image quality. (medimaging.net)
Accordingly, medical professionals must strike a balance between obtaining high-quality CT images and minimizing a patient's exposure to X-rays to reduce the risk of misdiagnosis. (medimaging.net)
To strike a balance between image quality and radiation exposure during CT scans, healthcare professionals, including radiologists, may employ an optimization strategy. (medimaging.net)
Radiation dose reductions of 38 to 83 % at 80 kVp and 3 to 80 % at 100 kVp could be achieved with preserved image quality. (edu.au)
CONCLUSION: This systematic review found that radiation doses could be reduced between 38 to 83 % at 80 kVp, and 3 to 80 % at 100 kVp without compromising the image quality. (edu.au)
The ever lighter FDR D-EVO III is introduced with our flexible film-based TFT detector, providing high image quality with low X-ray dose. (fujifilm.com)
FDR D-EVO III utilizes the latest Fujifilm digital image processing technologies including Dynamic Visualization, which optimizes image display based on monitor characteristics and FNC noise suppression processing that improves image quality, automatically extracting and separating noise components in the image. (fujifilm.com)
The radiology community continues to evaluate additional opportunities to further reduce both collective and individual doses while advancing the contribution of imaging to high-quality care. (acr.org)
However, FBP requires higher than desired doses of radiation to produce high-quality diagnostic images. (umich.edu)
Prior information extracted from big data collections of CT images should allow dramatic improvements in reconstructing high-quality images from ULDCT measurements. (umich.edu)
The proposed improved MBIR methods are expected to provide high image quality while further reducing the X-ray radiation dose to an ultra-low level. (umich.edu)
ASNC is a leader in quality, education, advocacy and standards in cardiovascular imaging, with nearly 4,000 members worldwide. (itnonline.com)
Images acquired at 1 h, 2 h, and 5.5 h p.i. with durations of 10 to 120 s/bp were rated regarding image quality. (lu.se)
Imaging at 2 h p.i. with 60 s/bp yielded acceptable quality in all cases. (lu.se)

Fourteen subjects were additionally imaged at week 52. (lu.se)

Meanwhile, high-precision measurement of local atomic positions is also fundamentally hindered by the poor signal-to-noise ratio of ADF images from electron-radiation sensitive or weakly scattering samples, such as monolayer 2D materials. (nature.com)
Simulations have suggested the possibility of extremely low-dose imaging by electron ptychography, in principle beyond that of all other electron imaging approaches to date including high-resolution TEM imaging widely used in Cryo-EM community-a potential outcome of considerable importance for the study of electron radiation-sensitive materials including biological macromolecules. (nature.com)
A typical high-dose conventional treatment would be ≥50Gy-70Gy, in once-daily fractions of 1.8Gy-2.0Gy delivered five times per week, over five to seven weeks. (hospitalhealthcare.com)
This treatment method allows high-dose areas to be conformed tightly to the target volumes, with dose falling off steeply outside these regions. (snmjournals.org)
The noise addition tool simulated low-dose images from the original high-dose images. (duke.edu)
This study reports the scintigraphy, histopathology, sole treatment with high-dose radioactive iodine and outcome of eight cases of feline thyroid carcinoma. (avmi.net)
Single high-dose (1100MBq I(131)) radioiodine therapy was successful in 6/8 cases, with complete resolution of hyperthyroidism, and was associated with prolonged survival times (181-2381 days). (avmi.net)
Sole treatment with high-dose radioiodine is a safe and effective treatment for functional thyroid carcinoma. (avmi.net)
The radiation you get from x-ray, CT, and nuclear imaging is ionizing radiation - high-energy wavelengths or particles that penetrate tissue to reveal the body's internal organs and structures. (harvard.edu)
We've long known that children and teens who receive high doses of radiation to treat lymphoma or other cancers are more likely to develop additional cancers later in life. (harvard.edu)
suggesting that they may be permanent, at least in rhesus monkeys given repeated high doses. (jneurosci.org)
This effect shows up clearly when comparing the PI score for a high-dose scan to the PI score for a low-dose (i.e. noisy) scan of the same subject. (diagnijmegen.nl)
The performance of the filter is assessed by comparing high-dose and low-dose PI scores for 11 subjects. (diagnijmegen.nl)
LNVWA improves the reproducibility of high-dose PI scores: For an emphysema threshold of -910 HU, the root-mean-square difference in PI score drops from 10% of the lung volume to 3.3% of the lung volume if LNVWA is used. (diagnijmegen.nl)
Comparatively, Fe3O4-TiO2 NPs induced higher signal protein expressions than TiO2 NPs under a high treatment dose. (cdc.gov)
Further studies are needed to elaborate the detailed mechanisms of toxicity induced by a high dose of Fe3O4-TiO2 NPs. (cdc.gov)
The number of zero dose children has been increasing globally and South Africa is one of the priority countries for high zero dose children. (who.int)
In this trial 53,454 participants at high risk for lung cancer-current and former heavy smokers of at least 30 pack-years between 55 and 74 years of age-were randomly assigned to receive low-dose helical CT or chest x-ray screenings once a year for three years, and then followed for 3.5 additional years with no further screening. (cdc.gov)

General Electrical introduced the world's first commercial MBIR product, Veo, which allows CT scans to be performed using a radiation dose that is up to 75% lower than conventional image construction technique. (umich.edu)
The diagnostic evaluations mainly consisted of further imaging: diagnostic CT, PET-CT scans and chest radiography. (cdc.gov)

In an study published by Chromosome Research in March 2021, Silson's silicon nitride membranes were used for Ptychography imaging of human chromosomes. (silson.com)

Both are taken in a single dose by mouth. (cdc.gov)

In fact, that first dose immunologically resembles the booster (second) dose in people who have not been infected. (uspharmacist.com)
In fact, the authors suggest that the intensity of the response to the first dose in people previously infected looks quite similar to the response from those not previously infected after the second dose. (uspharmacist.com)

The standard in renal cortical functional imaging is scintigraphy with technetium-99m labeled dimercaptosuccinic acid (DMSA). (lu.se)

In addition, the effective radiation dose of the multiple myeloma CT protocol was reduced by xx. (duke.edu)
See "Imaging procedures and their approximate effective radiation doses. (harvard.edu)

It offers excellent imaging of superficial structures, with the potential to confirm or exclude fusion of cranial sutures while avoiding exposure to ionizing radiation in the very young infant. (medscape.com)
There's always questions about radiation exposure from medical imaging. (harvard.edu)
Exposure to ionizing radiation from natural or background sources hasn't changed since about 1980, but Americans' total per capita radiation exposure has nearly doubled, and experts believe the main reason is increased use of medical imaging. (harvard.edu)
The atomic blast isn't a perfect model for exposure to medical radiation, because the bomb released its radiation all at once, while the doses from medical imaging are smaller and spread over time. (harvard.edu)

Conclusions: Concordance of CTand 3He MR imaging measurements in unfixed and inflation-fixed lungs supports the use of inflation-fixed lungs for quantitative imaging studies in emphysema. (monash.edu)

All subjects underwent magnetic resonance imaging at the start of RT and at week 3, 6, 15, and 26. (lu.se)
All-cause mortality (deaths due to any cause, including lung cancer) was reduced by 6.7% for those participants who underwent low-dose helical CTs compared to those who received chest X-rays. (cdc.gov)

These results indicate that methamphetamine, at doses used by some humans, produces long-term reductions in brain DA axonal markers in baboons, and that it is possible to detect methamphetamine-induced DAT loss in living nonhuman primates by means of PET. (jneurosci.org)

But many experts are concerned about an explosion in the use of higher radiation-dose tests, such as CT and nuclear imaging. (harvard.edu)

A musculoskeletal radiologist assessed the simulated images to determine the lowest possible dose. (duke.edu)

Statistical methods are then utilized to calculate the optimal radiation dose and tomographer configuration. (medimaging.net)

free radiation dose from adult and must very then see forced with the animal of suitable teaching, but subsequently underestimated towards original dissertation of name institutions,( Okungu, Hayombe and Agong, 2014), but can Thank sponsored with linen relationship to know practical attention. (philfox.com)

We expect this trend to continue as technology advances and imaging optimization matures," said American College of Radiology Chief Executive Officer William T. Thorwarth Jr., MD, FACR. (acr.org)

Developed by LANDAUER medical physicists, the service is designed to meet The Joint Commission Diagnostic Imaging Standards, the American Association of Physicists in Medicine recommendations and state regulations. (landauer.com)
ExamVue Digital X-Ray is a manufacturer and developer of digital imaging solutions for medical screening purposes. (examvuedigitalxray.com)
We are pleased, but not surprised, that despite a steadily increasing and aging population, the medical radiation dose Americans receive is going down. (acr.org)
Studies show that medical imaging exams are directly linked to greater life expectancy and declines in mortality rates . (acr.org)
Medical Imaging 2005;5747:921-929. (diagnijmegen.nl)
The Diagnostic Image Analysis Group is part of the Radboud University Medical Center . (diagnijmegen.nl)

Using a metered-dose inhaler (MDI) seems simple. (medlineplus.gov)

For most women, there's very little risk from routine x-ray imaging such as mammography or dental x-rays. (harvard.edu)

However, for conventional imaging methods in scanning transmission electron microscopy (STEM), atomic resolution with picometer precision cannot usually be achieved for weakly-scattering samples or radiation-sensitive materials, such as 2D materials. (nature.com)
The widely adopted atomic-resolution imaging methods in scanning transmission electron microscopy (STEM), such as annular dark-field (ADF) or coherent bright-field (cBF) imaging, are intrinsically dose inefficient as they use only a small fraction of the scattered electrons, being constructed via a simple integration of a limited portion of phase space. (nature.com)
Therefore, conventional STEM imaging methods usually cannot achieve sub-angstrom resolution or even atomic-resolution for electron radiation-sensitive materials 8 . (nature.com)
Imperfections of the STEM imaging system especially the partial coherence of the illumination probe reduces the image resolution and contrast of conventional STEM imaging methods 19 . (nature.com)
The few reported methods aimed at denoising low-dose CTP images lack practicality by considering only small sections of the brain or being computationally expensive. (physiciansweekly.com)

Once an image has been reconstructed from the measured projection data, a ray-tracing in the image is performed to calculate new projections that exactly represent the reconstructed image, as if the reconstructed image had been the measurement object of a CT scan. (ajnr.org)
Image: Researchers from Italy have developed and trained neural-network-based models to analyze CT scan images. (medimaging.net)
The benefits of these tests, when they're appropriate, far outweigh any radiation-associated cancer risks, and the risk from a single CT scan or nuclear imaging test is quite small. (harvard.edu)
The dose distribution imparted by a CT scan is much more homogeneous than that imparted by radiography, but is still somewhat larger near the skin than in the centre of the body. (wikipedia.org)
The dose-length product (DLP) is a quantity defined for use in CT as D L P = C T D I v o l . n T {\displaystyle DLP=CTDI_{vol}.nT} for n {\displaystyle n} and T {\displaystyle T} as described above ( n T {\displaystyle nT} is therefore the total scan length). (wikipedia.org)
It requires taking images of the brain with either a CT scan or an MRI. (cdc.gov)

Results showed an average improvement of 5.15-5.32 dB PSNR and 0.025-0.033 SSIM for CTP images and 2.66-3.95 dB PSNR and 0.036-0.067 SSIM for functional maps at 50% and 25% of normal dose using GAN model in conjunction with a stacked data regime for image synthesis. (physiciansweekly.com)

RESULTS: The mean effective dose (HE) ranged from 0.31 to 2.75 mSv at 80 kVp, 0.69 to 6.29 mSv at 100 kVp, and 1.53 to 10.7 mSv at 120 kVp. (edu.au)
This workshop aims at sharing scientific results and at facilitating exchanges between experienced and young researchers in the fast-growing field of imaging and radiotherapies. (francelifeimaging.fr)

In the study, researchers sought to evaluate progression-free survival and overall survival of different dosing intervals. (axisimagingnews.com)

The signal-to-noise ratio and radiation dose were also evaluated. (ajnr.org)

In conclusion, the noise addition tool produced simulated CT images with realistic noise properties from standard dose CT images. (duke.edu)

The Physics of Diagnostic Imaging (2nd ed. (wikipedia.org)

To perform a systematic review of the radiation dose and diagnostic accuracy of prospective versus retrospective ECG-gated multislice CT coronary angiography. (edu.au)

Personalized dosing allowed one-third of the men in this study to have treatment breaks while still achieving the same progression-free and overall survival outcomes they would have if they received continuous treatment," notes Nguyen. (axisimagingnews.com)

As in most cases, the use of MR imaging after a CI must be limited, so the electrode position is usually assessed using conventional x-ray or MDCT. (ajnr.org)

Anatomy13

Organisms14

Diseases21

Chemicals and Drugs86

Analytical, Diagnostic and Therapeutic Techniques and Equipment91

Psychiatry and Psychology3

Phenomena and Processes37

Anthropology, Education, Sociology and Social Phenomena1

Information Science6

Named Groups1

Health Care34

Computed tomography10

Radiotherapy9

Modalities2

Patients37

20235

Reduction20

Modality2

Pediatric1

Clinical11

Dosimetry2

Perfusion3

Spatial resolution3

Iterative reconstruction3

Positron emission t1

Molecular Imaging2

Radiological1

Protocols2

Reconstruction10

SPECT5

Irradiation2

Fluoroscopy1

Accreditation3

Assessment4

Significantly2

Comparable1

Vaccine10

Nuclear Medicine1

Diagnosis5

Patient14

Procedure2

Quality23

Fourteen1

High18

Scans2

Ptychography1

Single dose1

Second dose2

Scintigraphy1

Effective radiation2

Exposure4

Emphysema1

Underwent2

Reductions1

Higher1

Lowest possible dose1

Optimal radiation dose1

Adult1

Optimization1

Medical6

Inhaler1

Routine1

Methods5

Scan6

Functional1

Results2

Researchers1

Signal-to-no1

Standard dose1

Physics1

Coronary1

Outcomes1

Conventional1