Imaging tomography. Medical search. Frequent questions

Positron emission tomography (PET) is also an alternative imaging test, with agents such as 18F-deoxyglucose (F-FDG), 18F-dihydroxyphenaline (F-DOPA), and 18F-fluorodopamine (F-FDA) being used in cases of negative 123 I-MIBG when there is a high clinical and laboratory suspicion. (medscape.com)
Luster et al investigated the specificity and sensitivity of (18)F-3,4-dihydroxyphenylalanine (DOPA) positron emission tomography (PET) scanning, CT scanning, and a combination of the 2 modalities in the identification and localization of adrenal and extra-adrenal pheochromocytomas. (medscape.com)
A picture of a human brain taken by a positron emission tomography. (gettyimages.com)
A picture of a human brain taken by a positron emission tomography scanner, also called PET scan, is seen on a screen on January 9, 2019, at the Regional and University Hospital Center of Brest (CRHU - Centre Hospitalier Régional et Universitaire de Brest), western France. (gettyimages.com)

Interpretation of Electrical Impedance Tomography (EIT) -based measures is complex. (embs.org)

Various noninvasive imaging modalities such as radiography, ultrasonography, conventional (single‐energy) CT, dual energy CT, and magnetic resonance imaging (MRI), have all been used for the evaluation and diagnosis of gout. (medscape.com)
Endoluminal imaging in gastrointestinal endoscopy has seen the advent of rapidly evolving new modalities over the last decade. (hindawi.com)
With CODA, extension of this hyper-reflective band and retinal tissue into the disc is possible and best evaluable using EDI-OCT or analogous image modalities. (bmj.com)
That being said, it is now possible to obtain and interpret non-invasive, highly valuable information from different diagnostic imaging modalities. (vin.com)
Computed tomography (CT) is one the most used imaging modalities due to its advancements in acquisition time and diagnostic capability. (duke.edu)
Given recent technologies, semi-automated plaque software is available to identify coronary plaque stenosis, volume and characteristics and potentially allows to be used for the assessment of more details of plaque information, progression and future risk as a surrogate tool of the invasive imaging modalities. (escholarship.org)
These findings are depicted with a variety of imaging modalities. (medscape.com)
Researchers reviewed existing data on the contribution of neuroimaging modalities such as magnetic resonance imaging. (news-medical.net)
33 because some patients received multiple imaging modalities or had multiple indications. (cdc.gov)
This retrospective case-series study assessed whether the imaging modalities (primary predictor variable) are equivalent in determining the degree of impaction of third molars (primary outcome variable) according to the parameters of the Pell and Gregory classification . (bvsalud.org)
The agreement rates between PR and CBCT were presented, and the imaging modalities were compared by the McNemar-Bowker test (α = .05). (bvsalud.org)

We highlight the characteristics observed on radiography and computed tomography, with an emphasis on computed tomography. (scirp.org)
Plain film radiography (colloquially known as X-ray), computed tomography (CT), and magnetic resonance imaging (MRI) allow different aspects of sea star anatomy to be displayed and highlighted. (vin.com)
The new beamline will provide full-field X-ray radiography and tomography techniques, thus extending the scientific possibilities of the facility and the research opportunities in the region. (esrf.fr)
Indeed, BEATS will offer two kinds of powerful experimental 3D imaging techniques that are new at SESAME: full-field X-ray radiography and tomography. (esrf.fr)
Since its development in the 1950s, muon tomography has taken many forms, the most important of which are muon transmission radiography and muon scattering tomography. (wikipedia.org)
Muography is a technique similar in principle to radiography (imaging with X-rays) but capable of surveying much larger objects. (wikipedia.org)
The technique produces cross-sectional images (not projection images) of large-scaled objects that cannot be imaged with conventional radiography. (wikipedia.org)
Although these techniques are related, they differ in that radiography uses X-rays to image the inside of objects on the scale of meters, while muography uses muons to image the inside of objects on the scale of hectometers to kilometers. (wikipedia.org)
The research questions for this study were as follows 1) Is panoramic radiography (PR) equivalent to cone-beam computed tomography (CBCT) in determining the degree of mandibular third molar impaction? (bvsalud.org)

Differently, in the Cone-beam Computed Tomography, the image is gotten through a single scanning, allowing that the image is reformatted without distortion and with a lesser radiation exposition. (bvsalud.org)
Is Panoramic Imaging Equivalent to Cone-Beam Computed Tomography for Classifying Impacted Lower Third Molars? (bvsalud.org)

CT scanning is the most sensitive imaging modality for detecting metastatic lung nodules. (medscape.com)
Some authors prefer to use MIBG uptake scanning as the initial screening modality because it enables whole-body imaging, making it useful for the detection of extra-adrenal tumors and metastatic deposits. (medscape.com)
The Intravascular Optical Coherence Tomography Image IOD specifies a multi-frame image acquired on an Intravascular Optical Coherence Tomography modality. (nema.org)
This study describes 8 image rendering techniques that are essential for the identification and visualization of postmortem findings in stranded cetaceans, which will help clinicians, veterinarians and stranding response personnel worldwide to fully utilize the radiological modality. (jove.com)
This novel imaging modality can reveal the location and extent of posterior ROP pathology not evident on standard examination. (duke.edu)
it is also a good modality for measuring bladder capacity, which may be a major concern in cases of cystitis (see the image below). (medscape.com)

Fluorescence emission computed tomography detecting near-infrared autofluorescence allows in vivo monitoring of intraplaque hemorrhage, establishing a preclinical technology to assess and monitor plaque instability and thereby test potential plaque-stabilizing drugs. (nature.com)

there is some evidence, however, that fetal magnetic resonance imaging (MRI) may provide superior detail of central nervous system (CNS) anomalies. (medscape.com)
Magnetic resonance imaging (MRI) may be useful for identifying intestinal ischemia as a cause of pneumatosis. (medscape.com)
The integration of different imaging technologies such as computed tomography (CT) and magnetic resonance imaging (MRI) assists clinicians in diagnosing several neurological diseases at an initial stage, thereby inhibiting their development into serious medical conditions. (scirp.org)
For instance, the advent of diagnostic imaging tools such as computed tomography (CT), magnetic resonance imaging (MRI) and nuclear medicine, has contributed significantly to the diagnoses of neurological diseases as these tools provide three-dimensional anatomy of the human body. (scirp.org)
Computed tomography (CT) scanning and magnetic resonance imaging (MRI) have higher sensitivity in detecting pheochromocytomas than nuclear medicine scanning with iodine-131 metaiodobenzylguanidine ( 131 I-MIBG), although 131 I-MIBG uptake is more specific. (medscape.com)
Magnetic Resonance Imaging (MRI) Magnetic resonance imaging (MRI) is a type of medical imaging that uses a strong magnetic field and very high frequency radio waves to produce highly detailed images. (merckmanuals.com)
Magnetic resonance imaging (MRI). (cdc.gov)
Additionally, magnetic resonance imaging (MRI), in combination with noninvasive assessment of y-aminobutyric acid (GABA) by magnetic resonance spectroscopy (MRS), provides convincing evidence of Mn exposure, even without clinical symptoms of Mn intoxication. (cdc.gov)
Figure 2 Magnetic resonance imaging scans creatinine (normal range: traces). (who.int)
Computerized tomography (CT) and magnetic resonance imaging (MRI) scans infections and sick days. (who.int)

The optical layout of a CTIS instrument is shown on the left part of the top image. (wikipedia.org)
Takayuki Okamoto, Akinori Takahashi, and Ichirou Yamaguchi, "Simultaneous acquisition of spectral and spatial intensity distribution", Applied Spectroscopy 47: 1198-1202 (1993) F. V. Bulygin and G. N. Vishnyakov, "Spectrotomography -- a new method of obtaining spectrograms of two-dimensional objects", in Analytical Methods for Optical Tomography, Proc. (wikipedia.org)
In the rapidly evolving field of endoscopic gastrointestinal imaging, Optical Coherence Tomography (OCT) has found many diverse applications. (hindawi.com)
Optical coherence tomography (OCT) captures cross-sectional data and is used for the screening, monitoring, and treatment planning of retinal diseases. (arxiv.org)
Optical coherence tomography (OCT) is a non-contact, diagnostic method that uses infrared light, which allows the analysis of the retinal structure by means of high-resolution tomographic cross sections. (bmj.com)
However, since the introduction of optical coherence tomography (OCT) in 1991, it has become an invaluable tool in the diagnosis and management of different retinal disorders including ME. (bmj.com)
Intravascular imaging, using ultrasound (IVUS) or optical coherence tomography, reveals that angiographic assessment of the coronary lumen grossly underestimates the presence, nature and extent of coronary artery plaque. (bmj.com)
This Section defines an Information Object to be used with Intravascular Optical Coherence Tomography imaging devices. (nema.org)
The Intravascular Optical Coherence Tomography Image IOD is used in two SOP Classes as defined in PS3.4 Storage Service Class, a SOP Class for storage of images intended for presentation, and a SOP Class for storage of images intended for further processing before presentation. (nema.org)
Methods In this observational study, 10 patients (18 eyes) with sporadic or autosomal dominant CODA were evaluated with enhanced depth imaging optical coherence tomography (EDI-OCT) and colour fundus images for the presence of 4th hyper-reflective band extension into the optic disc. (bmj.com)
In this Ph.D. thesis, I explore the potential of diffuse optical tomography (DOT) for breast cancer imaging and NAC monitoring. (columbia.edu)
Scholars@Duke publication: Insights into advanced retinopathy of prematurity using handheld spectral domain optical coherence tomography imaging. (duke.edu)
PURPOSE: To elucidate the subclinical anatomy of retinopathy of prematurity (ROP) using spectral domain optical coherence tomography (SD OCT). DESIGN: Prospective, observational case series. (duke.edu)
Spectral domain optical coherence tomography imaging was conducted without sedation at the bedside in the neonatal intensive care unit on 1 patient. (duke.edu)
Invasive coronary plaque imaging such as intravascular ultrasound and optical coherence tomography has been widely used to observe culprit or non-culprit coronary atherosclerosis, as well as optimize stent sizing, apposition and deployment. (escholarship.org)
Perhaps the greatest value of optical coherence tomography imaging is in the longitudinal monitoring of structural damage. (aao.org)
In 10 patients with ACS, we used serial optical coherence tomography (OCT) to explore the repair and healing morphology of non-critically narrowed culprit plaques, both with RFC and IFC, which were treated with thrombus aspiration or systemic thrombolysis alone without angioplasty or stent implantation. (cardiolefrog.fr)

We demonstrated non-invasive whole-brain imaging of tau in P301L mice with vMSOT system using PBB5 at a previously unachieved ~ 115 μm spatial resolution. (springer.com)
It's capable of X-ray absorption contrast and phase contrast imaging at a spatial resolution of about 1 micrometer in 2D and 3D. (lu.se)
The spatial resolution in traditional X-ray imaging is limited by the quality of the optics. (lu.se)
In coherent X-ray imaging, the diffracted signal from the sample is analyzed using advanced algorithms, which makes it possible to improve the spatial resolution. (lu.se)

It is necessary to carry out a reconstruction algorithm to convert this image back in the 3D spatio-spectral space. (wikipedia.org)
A penalized maximum-likelihood estimation is proposed to perform hyperspectral (spatio-spectral) image reconstruction for X-ray fluorescence tomography. (anl.gov)
The proposed reconstruction algorithm is implemented on a high-performance data-intensive computing middleware and performed image reconstruction at Argonne Leadership Computing Facility. (anl.gov)
D. Gursoy, T. Bicer, A. Lanzirotti, M. G. Newville and F. De Carlo, " Hyperspectral image reconstruction for x-ray fluorescence tomography," Optics Express , vol. 23 (2015). (anl.gov)
In this study, we simulate reduced axial scan (A-scan) resolution by Gaussian windowing in the spectral domain and investigate the use of a learning-based approach for image feature reconstruction. (arxiv.org)
For solving low convergence rate and being vulnerable to fall into a local minimum in BP neural network during training process, a new ECT image reconstruction algorithm based on neural network and Simulated Annealing Algorithm (SAA) is brought forward. (scialert.net)
Simulation results show that according to the algorithm based on neural network and SAA, high quality reconstruction images are obtained, which provides a new method for the study of ECT system. (scialert.net)
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)
Researchers used IMAT to carry out neutron Bragg edge imaging for tomographic reconstruction of residual strain. (stfc.ac.uk)
This technique is the basis for image reconstruction (converting from the measured data to the image) on modern CT scanners. (stfc.ac.uk)

Hard X-ray fluorescence ( XRF ) tomography has grown into a powerful non-destructive technique for probing trace metal distributions in samples without the need for physical sectioning that may disrupt trace element distributions and sample structure. (anl.gov)
In vivo vMSOT brain imaging of P301L mice showed higher retention of PBB5 in the tau-laden cortex and hippocampus compared to wild-type mice, as confirmed by ex vivo vMSOT, epi-fluorescence, multiphoton microscopy, and immunofluorescence staining. (springer.com)
Besides establishing fluorescence emission tomography (FLECT) as a preclinical tool for the detection of plaques with intraplaque hemorrhage and its potential use in testing and monitoring of plaque-stabilizing drugs, our report has the potential to support technical developments for imaging technologies that will ultimately allow to risk stratify atherosclerotic plaques in patients and, in particular, to identify plaques that are prone to cause cardiovascular events. (nature.com)

however, radiographic imaging findings generally do not appear until after at least 1 year of uncontrolled disease. (medscape.com)
With respect to the severity of neurological diseases and the increasing popularity of imaging tools, the current study has evaluated the findings of CT and MRI in examining neurological disorders. (scirp.org)
The objective of this study was to describe the main imaging findings in Shrinking Lung, an important pulmonary alteration in lupus patients. (scirp.org)
The diagnostic interpretation of the findings of Systemic Lupus Erythematosus requires that the examiner be familiar with the imaging spectra of this pathology. (scirp.org)
This could affect future clinical decision-making if studies validate a management strategy based on findings from this imaging technique. (duke.edu)
With clinical suspicion, lymphangioleiomyomatosis (LAM) has been diagnosed on the basis of compatible chest radiograph, pulmonary function tests (PFTs), and computed tomography (CT) scan findings. (medscape.com)

1 OCT is a non-contact, micron-level, high-resolution diagnostic method that uses infrared light in the 800-840 nm wavelength range to provide real-time non-invasive imaging of the retina. (bmj.com)

Subsequently, Fourier domain OCT was developed which allows for rapid image acquisition and generation of real time in vivo 2-dimensional and 3-dimensional mucosal renditions [ 5 ]. (hindawi.com)
The feasibility of OCT for carrying out in vivo real time imaging of Barrett's esophagus, high grade dysplasia and esophageal adenocarcinoma has been well demonstrated (Figures 1 , 2 , and 3 ). (hindawi.com)
I therefore utilize the system along with other two systems to conduct ex vivo imaging on human tracheobronchial epithelium. (columbia.edu)
During the study of ex vivo ciliary imaging, one of the challenges I was confronted with was the enormous amount of data generated by the SS-OCT, especially when high temporal frequency resolution is required. (columbia.edu)
MAIN OUTCOME MEASURES: In vivo determination of vitreoretinal morphology, anatomy, and pathology by clinical examination, imaging, and SD OCT. RESULTS: Linear and volumetric imaging was achieved with the handheld system in infant eyes despite tunica vasculosa lentis and vitreous bands. (duke.edu)

We highlight technical aspects and principles of imaging, assess published data, and suggest future directions for OCT-guided evaluation and therapy. (hindawi.com)
This study aims to assess different image rendering techniques in the postmortem computed tomography for the evaluation of biological health and profile in stranded cetaceans in Hong Kong waters. (jove.com)
Computed tomography (CT) of the nasolacrimal drainage system with and without contrast medium (barium sulfate) was used to create an anatomic basis for clinical evaluation in domestic cats. (avmi.net)

Lung tissue density was measured from images obtained during a respiratory pause at FRC. (nih.gov)
Chest tomography usually shows reduced lung volumes with diaphragmatic elevation, occasional basal atelectasis, without severe pulmonary or pleuropulmonary disease. (scirp.org)
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)

How accurate is atherosclerosis imaging by coronary computed tomography angiography? (escholarship.org)

Conceptually, OCT (or Volumetric Laser Endomicroscopy/VLE) is analogous to B-mode ultrasonography, with the exception that near infrared light in the 700 to 1500 nm range of wavelength is used instead of sound waves to generate an image of the mucosal structure and its abnormalities using an interferometer device setup. (hindawi.com)
Beyond the overlapping of these images, the occurrence of geometric and volumetric distortions of the investigated anatomical repairs is also frequent. (bvsalud.org)

Airway wall and lumen areas were measured from three 1-mm-thick cross-sectional images obtained from upper, middle, and lower lobes during a respiratory pause with the lungs inflated to an airway pressure of 20 cm H2O. (nih.gov)
The foam (top middle) was scanned with ultra-fast X-ray tomography in different heights (cross-sectional images at the bottom). (hzdr.de)
The three-dimensional image (top right) consists of numerous cross-sectional images from different heights. (hzdr.de)

Radionuclide cisternography can be performed via lumbar puncture or ventricular injection by using technetium-99m ( 99m Tc) diethylenetriamine penta-acetic acid (DPTA) followed by planar imaging or single-photon emission CT (SPECT) scanning. (medscape.com)

Several studies have shown that imaging parameters such as RNFL, neural rim, and macular thickness measurements can detect progressive glaucomatous damage. (aao.org)

Since then, the conventional radiology (Rx) has been upgraded with the development of various other body imaging techniques to diagnose complex neurological disorders. (scirp.org)
It possesses the advantages of non-radioactive, non-intrusive, non-invasive, high imaging speed and low cost over the conventional medical imaging techniques. (amrita.edu)
Both the retinoschisis and the preretinal structures were not identified on conventional examination or imaging by expert pediatric ophthalmologists. (duke.edu)
Most of the conventional radiographic techniques offer limited images, a time that complex structures are overlapped and visualized in only two plans. (bvsalud.org)

Computed tomography (CT) scan in a soft-tissue window in a patient with intestinal ischemia demonstrates circumferential small bowel pneumatosis. (medscape.com)
Three-dimensional volume-rendered computed tomography (CT) scan in a patient with ischemic bowel demonstrates circumferential small bowel pneumatosis intestinalis. (medscape.com)
A head computed tomography (CT) scan uses many x-rays to create pictures of the head, including the skull, brain, eye sockets, and sinuses. (medlineplus.gov)

Takayuki Okamoto and Ichirou Yamaguchi, "Simultaneous acquisition of spectral image information", Optics Letters 16: 1277-1279 (1991). (wikipedia.org)

The computed tomography imaging spectrometer (CTIS) is a snapshot imaging spectrometer which can produce in fine the three-dimensional (i.e. spatial and spectral) hyperspectral datacube of a scene. (wikipedia.org)
In the "5" image, one can see in the side projections that the number is not clearly readable (loss of spatial information), but that some spectral information is available (i.e. some wavelengths appear brighter than others). (wikipedia.org)
Spectral or Fourier domain OCT technology has replaced the older, and slower, time domain OCT. Initial SD OCT could acquire images at higher rates up to 20 000 axial scans per second with almost 5 µm resolution. (bmj.com)
Although the SS-OCT performs relatively worse in phase stability compared with its spectral-domain counterpart (SD-OCT), it is still valuable since it images at a much faster rate than SD-OCT. Therefore, a better temporal resolution could be achieved, which is particularly attractive in areas such as time lapse imaging. (columbia.edu)
Together the mm and radio band spectroscopic snapshot imaging enables the tomographic exploration of the active atmospheric layers of the cool main-sequence stars (spectral type: FGKM), including our Sun. Sensitive modern mm and radio interferometers let us explore solar/stellar activity covering a range of energy scales at sub-second and sub-MHz resolution over wide operational bandwidths. (tcd.ie)

Multiple scattering represents a challenge for numerous modern tomographic imaging techniques. (lu.se)

The CHRU of Brest has just acquired a new molecular imaging device, the most advanced in France today according to the hospital center, capable of better detecting deep lesions and especially cancerous pathologies, the hospital announced on January 9, 2019. (gettyimages.com)

Although modern imaging techniques such as color Doppler sonography, helical or multidetector-row CT, and MRI have substantially improved the potential to image Wilms tumors, definitive diagnosis is still based on histology. (medscape.com)
This test generates two-dimensional and three-dimensional images of the colon that may show tumors or other problems. (merckmanuals.com)
Notably, we observed that there are differences in the time evolution of DOT features between pCR and non-pCR tumors under NAC, and DOT features can contribute to the successful prediction of pCR status from pretreatment imaging. (columbia.edu)

High signal intensity on T1- and T2-weighted images suggests ischemia. (medscape.com)
Our architecture may simply be extended to ischemia segmentation and computed tomography image identification by selecting relevant hyperparameters. (it.pt)

The Endocrine Society recommends CT as the initial imaging study, but MRI is a better option in patients with metastatic disease or when radiation exposure must be limited. (medscape.com)

Traditionally, image-processing-based techniques have been utilized to reconstruct subsampled OCT data and more recently, deep-learning-based methods have been explored. (arxiv.org)
We develop and use novel methods for X-ray imaging with the highest possible spatial and temporal resolution. (lu.se)
To this end, we use a wide range of X-ray imaging methods at different synchrotrons, including MAX IV in Lund, X-ray free-electron lasers, including European XFEL, as well as lab source systems. (lu.se)
We develop methods for coherent X-ray imaging, both in transmission and Bragg geometry, and combine this with electrical measurements. (lu.se)

EIT can be useful to applications where there are conductive contrasts between tissues, fluids or gasses, such as imaging of cancerous or ischemic tissue or functional monitoring of breathing, blood flow, gastric motility and neural activity. (embs.org)
Data processing and image analysis protocols were developed to more effectively evaluate static tissue contrast and dynamic functional imaging of the breast. (columbia.edu)

A key advantage of XRF imaging is its high sensitivity and specificity for transition metals such as iron, copper, zinc, or other essential trace elements, its high resolution that allows imaging at scales from few microns down to tens of nanometers. (anl.gov)
Although he succeeded in measuring the areal density of rock overburden placed above the detector, and even successfully matched the result from core samples, due to the lack of directional sensitivity in the Geiger counter, imaging was impossible. (wikipedia.org)
Here, we use x-ray grating interferometry to experimentally validate the framework and to demonstrate additional structural sensitivity, which exemplifies the impact of multiple scattering tomography. (lu.se)

High grade dysplasia and esophageal adenocarcinoma images exhibited more heterogeneous structures corresponding to irregular, heterogeneous tissue morphology from distorted and cribriform or villiform glandular architecture. (hindawi.com)
At follow-up OCT, the margins of the evacuated cavity in RFC plaques showed a smooth surface and a morphology similar to that of baseline images, while IFC plaques showed a smoothened intimal border and a double layering indicating organising thrombus incorporated in the superficial layers of the plaque. (cardiolefrog.fr)

Open Journal of Medical Imaging , 8 , 17-24. (scirp.org)

Cardiac imaging is central to the diagnosis and risk stratification of coronary artery disease, beyond symptoms and clinical risk factors, by providing objective evidence of myocardial ischaemia and characterisation of coronary artery plaque. (bmj.com)

An OCT probe can be passed through the accessory channel of an endoscope and can be kept in contact with the mucosa of interest which allows for a resolution of 7-10 micrometers and an imaging depth of 2-3 mm depending on the wavelength of light used and the type of tissue being imaged [ 6 , 7 ]. (hindawi.com)
The image interpretation "pathway" categorizes the steps by which an EIT system creates measures of the tissue properties of interest. (embs.org)
For CT and MRI of the digestive tract, doctors may give people substances that can be seen on the imaging test (contrast agents) to help distinguish one tissue or structure from its surroundings. (merckmanuals.com)

This paper emphasizes on modelling and fabricating an electrical capacitance tomography sensor using ANSYS APDL for bone for which the sensor is calibrated using air and water. (amrita.edu)
M. Bieberle, T. Stürzel, U. Hampel, E. Laurien, Ultrafast 3D X-ray tomography of a wire-mesh sensor in operation in a two-phase flow , 7th World Congress on Industrial Process Tomography, WCIPT7, 02. (hzdr.de)

Ultrafast X-ray tomography shall be qualified as quantitative measurement technique for the analysis of multiphase flows in structured elements up to 100 mm diameter. (hzdr.de)
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)

MRI is considered one of the best imaging techniques for the optimal management of secondary headaches [4]. (scirp.org)
New cardiac CT techniques can assess coronary artery inflammation by imaging perivascular fat, and this may represent an important step forward in identifying the 'residual risk' that is not detected by plaque or ischaemia imaging. (bmj.com)
Eight image rendering techniques consist of both 2-D and 3-D rendering are routinely applied to each stranded cetaceans for the biological health and profile investigation. (jove.com)
The increase of the use of the examinations clinicians and more modern and accurate techniques is evident, seen the biggest complexity of the carried through dentistry procedures, mainly inside of the surgery and the implantodontology, where great part of the prosthetic whitewashing is, currently, planned and executed on the information gotten bythe images, and the necessity of if searching safer, fast and less invasive treatments. (bvsalud.org)
This can reveal the differences undetected by standard diffraction and imaging techniques. (stfc.ac.uk)
The line integral is applicable to a wide range of imaging techniques utilizing various kinds of probes. (lu.se)

The portal venous phase (PVP) and delay phase (DP) image scanning started automatically 70 sand 180 safter the injection of contrast medium. (medscimonit.com)
Traditional X-ray imaging is based on absorption contrast, which has poor contrast for small and weakly absorbing samples. (lu.se)

OCT is of particular importance in imaging patients with Barrett's esophagus (BE). (hindawi.com)
Patients who may be referred for imaging of the adrenal glands include those with new or worsening diabetes mellitus (owing to impaired glucose regulation) and those with hypertensive crisis after anesthesia, surgery, or treatment with medications. (medscape.com)
Imaging may also be performed in patients with a known history of multiple endocrine problems. (medscape.com)
Data from patients who underwent multiple myeloma scanning were retrospectively analyzed for radiation dose and image quality assessment. (duke.edu)
The other 2 patients had an examination under anesthesia with SD OCT imaging in the operating room. (duke.edu)
Analysis of SD OCT images revealed preretinal structures (ranging from 409 to 2700 microm in width and 212 to 440 microm in height), retinoschisis, and retinal detachment in the posterior pole of patients with advanced ROP. (duke.edu)
in most patients, imaging is not required. (medscape.com)
We suggest that near-infrared autofluorescence imaging is a novel technology that allows identification of atherosclerotic plaques with intraplaque hemorrhage and ultimately holds promise for detection of high-risk plaques in patients. (nature.com)
The use of imaging may assist in detection of patients who are fast progressors in need of more aggressive intervention. (aao.org)

Cardiac CT (CCT) imaging has transformed the detection, characterisation and stratification of coronary artery disease (CAD) risk in individuals. (bmj.com)
CCT imaging for CAD initially quantified coronary artery calcification, as it was readily detected on CT images, and quantified to generate a coronary artery calcium score (CACS) that represented a surrogate marker of the presence and extent of CAD. (bmj.com)
This review article aims to focus on various evidence in coronary plaque imaging by coronary CTA and describes how accurate coronary CTA can classify coronary atherosclerosis. (escholarship.org)
Significant efforts have been made to characterize and risk stratify carotid and coronary atherosclerotic plaques using various imaging technologies. (nature.com)

[ 6 ] In a study of white-matter microstructure in women with interstitial cystitis/bladder pain syndrome evaluated by diffusion tensor imaging, white-matter abnormalities were identified that correlated with pain severity, urinary symptoms, and impaired quality of life. (medscape.com)

Although the spiral or Fan-beam Computed Tomography offers three-dimensional images without overlapping, expects certain inherent distortion the lesser specificity of the technique and to the process of attainment of images divided in small slices. (bvsalud.org)
A computer creates separate images of the body area, called slices. (medlineplus.gov)

The task of segmentation of brain regions affected by ischemic stroke is help to tackle important challenges of modern stroke imaging analysis. (it.pt)

A symmetrical, diffuse, reticular interstitial pattern (shown in the image below), caused by summation of multiple cyst walls, is typical. (medscape.com)

The objective of our study was to develop an automatic measurement of the whole VAT volume using a multi-atlas segmentation (MAS) method from a computed tomography. (nih.gov)
In this paper, we consider a modified 3D UNet architecture to improve the quality of stroke segmentation based on 3D computed tomography images. (it.pt)

In their study using ultra-high resolution OCT, Chen and colleagues [ 16 ] demonstrated characteristic layered epithelium in a normal esophagus with normal architecture, while images of Barrett's esophagus corresponded to crypt-like glandular structures. (hindawi.com)
Determine whether asymptomatic infants with CF have evidence for changes in airway structure when assessed by high-resolution computed tomography, and whether airway structure correlates with airway function in this age group. (nih.gov)
Our results indicate that infants with CF have thickened airway walls, narrowed airway lumens, and air trapping, when assessed by high-resolution computed tomography, and measurements of airway structure correlated with airway function. (nih.gov)
and no evidence of parenchymal pulmonary disease or vascular pathology in the image (chest X-ray and high-resolution computed tomography). (scirp.org)
High-resolution imaging of tau deposits at the whole-brain scale in animal disease models is highly desired. (springer.com)
Study on a simulation-based scatter correction for high-resolution gamma-ray tomography , 7th World Congress on Industrial Process Tomography, WCIPT7, 02. (hzdr.de)

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

First, two-dimensional imaging cannot assess haemodynamic consequences of stenoses, in terms of myocardial ischaemia. (bmj.com)

Muon tomography imagers are under development for the purposes of detecting nuclear material in road transport vehicles and cargo containers for the purposes of non-proliferation. (wikipedia.org)

In this context, development of modern imaging technology to diagnose neurological diseases has contributed a lot to the provision of optimal neurologic care [1]. (scirp.org)

Imaging was not possible in eyes with notable vitreous hemorrhage. (duke.edu)

Of course, this cube does not exist in physical space as mechanical objects do, but this representation helps to gain intuition on what the image is capturing: As seen in the figure on the right, the shapes on the image can be considered as projections (in a mechanical sense) of the datacube. (wikipedia.org)
Conceptually, one can consider each of the projections of the datacube in a manner analogous to the X-ray projections measured by medical X-ray computed tomography instruments used to estimate the volume distribution within a patient's body. (wikipedia.org)
Moreover, unlike X-ray CT where projections are acquired around the patient, the CTIS, as all imaging systems, only acquires the scene from a single point of view, and hence many projection angles are unobtainable. (wikipedia.org)
Further reduction of the angular projections is desirable to develop a cost-effective strain tomography method. (stfc.ac.uk)

The use of radiological imaging in medical care dates back to 1895 when X-rays were discovered by the Nobel Laureate Wilhelm Conrad Rontgen [3]. (scirp.org)

Anatomy32

Diseases57

Chemicals and Drugs31

Analytical, Diagnostic and Therapeutic Techniques and Equipment113

Psychiatry and Psychology2

Phenomena and Processes18

Disciplines and Occupations5

Technology, Industry, Agriculture3

Information Science13

Health Care21

Positron Emission T4

Electrical Impedance1

Modalities11

Radiography9

Cone-Beam Computed Tomography2

Modality6

Emission computed1

Magnetic Resonan10

Optical17

Spatial resolution4

Reconstruction11

Fluorescence3

Findings6

Diagnostic1

Vivo5

Evaluation3

Lung3

Angiography1

Volumetric2

Cross-sectional images3

Planar1

Macular1

Conventional4

Scan3

19911

Spectral5

Tomographic1

20191

Tumors3

Ischemia2

Metastatic1

Methods4

Functional2

Sensitivity3

Morphology2

Medical Imaging1

Diagnosis1

Tissue3

Sensor2

Quantitative2

Techniques6

Contrast2

Patients9

Coronary4

Abnormalities1

Slices2

Ischemic1

Interstitial1

Segmentation2

High resolution6

Radiologist1

Assess1

Nuclear1

Neurological1

Vitreous1

Projections4

Radiological1