Approach tomography. Medical search. Frequent questions

Cardiac positron emission tomography (PET) was implemented to investigate alterations in myocardial glucose and oxidative metabolism. (nih.gov)
Positron emission tomography (PET) is a powerful imaging technique which enables in vivo examination of brain functions. (bmj.com)
Positron emission tomography (PET) involves introduction, usually via an intravenous injection, of a radioactive tracer into the human body. (bmj.com)
New approach to clinical evaluation of cancer chemotherapy using positron emission tomography with 18FDG (2-deoxy-2-[18F]fluoro-D-glucose). (elsevierpure.com)

We sought to determine the anatomic characteristics of coronary arteries arising from an anomalous location (CAAL) detected on coronary computed tomography angiography (CTA) and assess the impact of high-risk anatomic characteristics on patient management and outcomes. (springer.com)
Opolski MP, Pregowski J, Kruk M et al (2013) Prevalence and characteristics of coronary anomalies originating from the opposite sinus of valsalva in 8,522 patients referred for coronary computed tomography angiography. (springer.com)

In order to extract the pixels of teeth from 3D Cone Beam Computed Tomography (CBCT) image, in this paper, a novel 3D segmentation approach based on deformable surface mode is developed for 3D tooth model reconstruction. (hindawi.com)
Cone Beam Computed Tomography (CBCT) scan technology is recommended by physicians to help diagnose dental disease because of being noninvasive, painless, cost-effective, and portable [ 2 ]. (hindawi.com)
Pretreatment cone beam computed tomography (CBCT) of 40 patients (age range 11-34 years) with unilateral impacted maxillary canines (IC) were analyzed. (medscimonit.com)
Cone beam computed tomography (CBCT), commonly recognized as digital volume tomography, pertains to the conversion of image data into digital formats and, of utmost significance, to the visual portrayal of anatomical structures in 3 dimensions [15]. (medscimonit.com)
What is cone-beam computed tomography? (rdhmag.com)
Cone-beam computed tomography, commonly referred to as CBCT, is 3-D imaging using cone-beam scanners that produce -layers of images to help diagnose patients. (rdhmag.com)

To capture expansive, seamless fields of view from frozen hydrated specimens by cryo-electron tomography, we developed methods for the collection and processing of montage data. (nature.com)
Montage parallel array cryo-tomography adopts principles of montage tomography via regular array beam-image-shift montage acquisition and is robust for imaging large fields of view while retaining high-resolution structural information in cryo-electron tomography. (nature.com)

In this paper, we have shown a simple procedure to detect anomalies in the lungs region by electrical impedance tomography. (edu.au)
Minhas, AS & Reddy, MR 2005, ' Neural network based approach for anomaly detection in the lungs region by electrical impedance tomography ', Physiological Measurement , vol. 26, no. 4, pp. 489-502. (edu.au)
Electrical Impedance Tomography (EIT) is an imaging technology that uses the electrical properties within an anatomic structure derived from measurements made on the structure's surface. (ge.com)
Pigatto A.V., Kao T-J, Mueller J. L. Mueller, Baker C. D., DeBoer E. M. Kupfer O., Electrical impedance tomography detects changes in ventilation after airway clearance in spinal muscular atrophy type I, Respiratory Physiology & Neurobiology 2021 (pending). (ge.com)
Detection of small bleeds in the brain with electrical impedance tomography. (ge.com)

A method for the rapid preparation of atom probe tomography (APT) needles using a xenon plasma-focused ion beam (FIB) instrument is presented and demonstrated on a test sample of Ti-6Al-4V alloy. (gla.ac.uk)

Thank you to SmartSolo for sponsoring the Virtual Tomography series! (seismosoc.org)

In this paper, we apply electron tomography (ET) to the study of the three-dimensional (3D) morphology of iron oxide nanoparticles (NPs) with reactive concave surfaces. (edu.sa)
A New Approach for 3D Reconstruction from Bright Field TEM Imaging: Beam Precession Assisted Electron Tomography. (nanomegas.com)

Weissinger, Lukas (2022) On regularization via frame decompositions with applications in tomography. (oeaw.ac.at)
van Frank, Sandrine (2022) A mathematical approach towards THz tomography for non-destructive imaging. (oeaw.ac.at)

Using these approaches, diagnosis and risk stratification could merge into a single procedure. (ersjournals.com)

Experimental results show that the proposed approach had a good performance in handling the cases with complicate structures and blurry boundaries well, is effective to converge, and can successfully achieve the reconstruction task of various types of teeth in oral cavity. (hindawi.com)
The global thresholding-based approach, which is widely used in existing 3D reconstruction systems, is known to be effective for automatic hard tissue segmentation. (hindawi.com)
Development of novel, mathematical modelling approaches, spatial and kinetic filters, motion compensation and registration methodologies, and integration of these into software for parametric reconstruction. (imperial.ac.uk)
2023) A Projected Nesterov-Kaczmarz Approach to Stellar Population-Kinematic Distribution Reconstruction in Extragalactic Archaeology. (oeaw.ac.at)
Whole-block imaging (WBI) using micro-computed tomography (micro-CT) allows the nondestructive reconstruction of a three-dimensional view of tissues , implying that WBI may be used for accurate pathological evaluation of patients with rectal cancer . (bvsalud.org)

Schmitt R, Froehner S, Brunn J et al (2005) Congenital anomalies of the coronary arteries: imaging with contrast- enhanced, multidetector computed tomography. (springer.com)
Tiku, Anika and Rai, Santosh, "Radio-anatomical approach to fundamentals of peritoneal spaces using Multidetector Computed Tomography" (2023). (manipal.edu)
Usefulness of 64-slice multidetector computed tomography as an initial diagnostic approach in patients with acute chest pain. (wustl.edu)
BACKGROUND: Recently, multidetector computed tomography (MDCT) has been proposed as an accurate diagnostic tool to evaluate for coronary artery disease. (wustl.edu)

Steiner, G & Watzenig, D 2008, ' A Bayesian filtering approach for inclusion detection with ultrasound reflection tomography ', Institute of Physics Conference Series , vol. 124, pp. 1-11. (elsevierpure.com)
This study aimed at evaluating hybrid multispectral optoacoustic tomography/ultrasound for imaging of thyroid disorders, including Graves' disease and thyroid nodules. (snmjournals.org)
This pilot study showed the applicability and the potential of hybrid multispectral optoacoustic tomography/ultrasound to semiquantitatively provide tissue characterization and functional parameters in thyroid disorders for improved noninvasive diagnostics of thyroid diseases. (snmjournals.org)

The diagnosis of subarachnoid hemorrhage (SAH) usually depends on a high index of clinical suspicion combined with radiologic confirmation via urgent computed tomography (CT) scan without contrast. (medscape.com)
Cross-sectional imaging with contrast-enhanced computed tomography (CECT) is consi-dered the gold standard modality for the evaluation of these masses [ 1 ]. (polradiol.com)

We perform ambient noise tomography (ANT) using data recorded on 342 seismographs within a 50x50 km area inside which the July 2019 M7.1 and M6.4 Ridgecrest earthquakes occurred. (scec.org)

A routine computed tomography (CT) scan through the midfoot is suggested to visualize any bony injury to the plantar bony structures. (medscape.com)
Building on the concept of scan technologies developed in medical sciences and geophysics, this effort developed a subsurface characterization tool comprised of three "fused" field methodologies: Hydraulic Tomography (HT), Conservative Tracer Tomography (CT), and Partitioning Tracer Tomography (PTT). (serdp-estcp.org)

The major imaging modality ispositron emission tomography (PET). (imperial.ac.uk)

The term tomography was first used in the quantum physics literature in a 1993 paper introducing experimental optical homodyne tomography. (wikipedia.org)
Quantum tomography can be used for characterizing optical signals, including measuring the signal gain and loss of optical devices, as well as in quantum computing and quantum information theory to reliably determine the actual states of the qubits. (wikipedia.org)
To compare two region-of-interest (ROI) approaches and a global thickness approach for capturing progressive circumpapillary retinal nerve fiber layer (cpRNFL) changes on optical coherence tomography (OCT) imaging. (arvojournals.org)
Optical coherence tomography (OCT) imaging has been increasingly used in clinical practice for the detection of glaucomatous progression. (arvojournals.org)
Objectives: This study sought to assess stent strut coverage, malapposition, protrusion, and coronary evaginations as markers of healing 5 years after implantation of sirolimus-eluting stents (SES) and paclitaxel-eluting stents (PES), by optical coherence tomography (OCT). Background: Early-generation drug-eluting stents have been shown to delay vascular healing. (eur.nl)

This new technology based on stochastic methods, assimilates results of hydraulic and partitioning tracer tomography surveys to derive the best estimate of the DNAPL distribution and its uncertainty. (serdp-estcp.org)

This approach enables rapid acquisition of contiguous regions of specimens using a montaged tilt series collection scheme. (nature.com)
Pathological Evaluation of Rectal Cancer Specimens Using Micro-Computed Tomography. (bvsalud.org)

Nowadays, computed tomography (CT) angiography is by far the most commonly used method for the diagnosis of acute pulmonary embolism. (ersjournals.com)

These measurements include Rayleigh-wave phase velocity via Helmholtz tomography and Eikonal tomography for earthquake and ambient noise data respectively, as well as Rayleigh-wave ellipticity. (seismosoc.org)

The purpose of this clinical report is to present our surgery approach combined to the preoperative embolization and the follow-up management of a patient with a Juvenile Nasopharyngeal Angiofibroma (JNA). (embj.org)
This Clinical Policy Bulletin addresses treatment approaches for liver and other neoplasms. (aetna.com)
HOWEVER, the clinical impact of this approach is unclear. (bvsalud.org)

The National Lung Screening Trial (NLST) showed that lung cancer screening with low-dose computed tomography (LDCT) significantly reduced lung cancer deaths among heavy smokers compared with screening with chest x-ray (1). (cdc.gov)
CONCLUSION: Use of an MDCT-based strategy in the ED as part of the initial diagnostic approach for patients presenting with acute chest pain is safe and efficiently reduces avoidable admissions in patients with an intermediate pretest probability for ACS. (wustl.edu)
Chest computed tomography was an invaluable method of diagnosis and management. (who.int)

Cite this: Practical Diagnostic Approach to Uveitis - Medscape - Aug 01, 2011. (medscape.com)

However, it is not intuitive and detailed enough due to the limitation of its tomography imaging characteristics. (hindawi.com)
Magnetic resonance imaging (MRI) is being studied selectively, but reports have not shown MRI to provide any diagnostic benefit beyond that which is achievable with traditional computed tomography (CT) scanning. (medscape.com)
Statistically unbiased prediction utilizing spatiotemporal information in imaging data (SUPPORT) is a self-supervised deep learning approach to accurately denoise voltage and calcium imaging data while preserving true dynamic signals. (nature.com)
In addition, the robust performance of the CS-ET algorithm with undersampled data should allow rapid progress with time-resolved 3D nanoscale studies, 3D atomic resolution imaging, and cryo-tomography of nanoscale cellular structures. (edu.sa)
The Centre supports different imaging approaches for cancer research. (imperial.ac.uk)
Diagnostic imaging approach to posteromedial knee (medial popliteal fossa) masses. (scirp.org)
With their new imaging approach, these changes can be visualized for the first time in larger tissue volumes, without cutting and staining or damaging the tissue as in conventional histology. (newswise.com)
Three-dimensional imaging is well known from medical computerized tomography (CT). (newswise.com)
This paper presents application of quantitative X-ray computerized tomography (CT) imaging in investigating the spatial distribution of adsorption kinetics. (cdc.gov)
The doctor may also use imaging studies including x-rays, computerized tomography (CT) scans, or magnetic resonance imaging (MRI) to see structures inside the body. (medlineplus.gov)

In a paper published recently in Scientific Reports, we demonstrate the advantages of the proposed approach on dynamic, time-resolved fuel cell data, for which the current data post-processing pipeline heavily relies on manual labor, typically limiting the experimental plans to just a small range of the full parameter space. (psi.ch)

Using Born's rule, one can derive the simplest form of quantum tomography. (wikipedia.org)

Using zoom tomography, large areas of lung tissue embedded in wax can be scanned enabling detailed examination to locate particularly interesting areas around inflammation, blood vessels or bronchial tubes," says lead author Professor Tim Salditt from the Institute of X-ray Physics at the University of Göttingen. (newswise.com)
Salditt and his research group at the Institute for X-ray Physics developed special illumination optics and algorithms to reconstruct sharp images from these patterns, an approach which they have now adapted for the study of lung tissue affected by severe progression of Covid-19. (newswise.com)

However, cardiotoxicity is of increasing concern, with a need to develop rational mechanism driven approaches for the early detection of cardiac dysfunction. (nih.gov)

Similarly, quantum measurement tomography works to find out what measurement is being performed. (wikipedia.org)
Unlike a measurement on a single system, which determines the system's current state after the measurement (in general, the act of making a measurement alters the quantum state), quantum tomography works to determine the state(s) prior to the measurements. (wikipedia.org)

Preliminary calculations suggested that the fused tomography technology becomes markedly more cost effective over conventional characterization approaches at sites with suspected investigation areas larger than 2,500 sq. ft. (serdp-estcp.org)

The knowledge of heterogeneity is then used to design conservative tracer and partitioning tracer tomography tests to accurately depict the spatial distribution of DNAPL residual saturation ( S N ) in the source zone. (serdp-estcp.org)

Predictors of tooth loss: A machine learning approach. (cdc.gov)

Second, we utilized pulsatile blood flow oscillations in cerebral arteries to estimate the critical closing pressure (CrCP), i.e., the arterial blood pressure at which CBF approaches zero. (spie.org)

determined that 3D Computerized Tomography (CT) scans were more reliable compared to plain radiographs in terms of scapular angulation, translation, and glenopolar angle measurements. (healthpartners.com)

The literature offers many approaches to classifying Lisfranc injuries on the basis of radiographic appearance. (medscape.com)

Careful evaluation of the lesion site and possible approaches were analysed. (polradiol.com)
The multitude of possible causes can create diagnostic challenges, but a successful approach includes a targeted history of the illness and associated symptoms, detailed ocular evaluation and specific laboratory investigations. (medscape.com)

Additionally, a combination of the approaches listed above may be used to make a diagnosis. (medlineplus.gov)

Compared with the traditional recommendation of CT followed by LP, CT/CTA may offer a less invasive and more informative diagnostic approach for emergency department patients complaining of acute-onset headache and with no significant risk factors for SAH. (medscape.com)
The aim of this study was to evaluate whether right ventricle dilation at computed tomography (CT) angiography can be used to assess the risk of death in patients with acute pulmonary embolism. (ersjournals.com)

The analytical approach was based on a hierarchical Bayesian random-effects model. (eur.nl)

On the basis of results from the National Lung Screening Trial (NLST), national guidelines now recommend using low-dose computed tomography (LDCT) to screen high-risk smokers for lung cancer. (cdc.gov)
Identification of candidates for longer lung cancer screening intervals following a negative low-dose computed tomography result. (who.int)

While other EIT commercial systems exist, they use an inferior approach and multiplex a single (or bipolar) current source about their electrode array. (ge.com)

A site in mid-western Sweden contaminated with chlorinated solvents originating from a previous dry cleaning facility, was investigated using conventional groundwater analysis combined with compound-specific isotope data of carbon, microbial DNA analysis, and geoelectrical tomography techniques. (lu.se)
The treatment is surgical and can be performed using a conventional or laparoscopic approach. (bvsalud.org)

A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications. (mdpi.com)

A single source approach affords significantly less capability to detect small inhomogeneities than an SMS-EIT systems in which the number of current sources is equal to the number of skin electrodes. (ge.com)

The general principle behind quantum state tomography is that by repeatedly performing many different measurements on quantum systems described by identical density matrices, frequency counts can be used to infer probabilities, and these probabilities are combined with Born's rule to determine a density matrix which fits the best with the observations. (wikipedia.org)

Researchers from ETH Zurich and the Paul Scherrer Institute have visualized and quantified the origins and evolution of this electrochemical and mechanical degradation of Li-ion batteries during battery operation using high-resolution 3D movies recorded using using x-ray tomography at the Swiss Light Source. (greencarcongress.com)
We show the value of this multidisciplinary approach, as the different results supported each interpretation, and show where natural degradation occurs at the site. (lu.se)

This paper describes a modeling approach that can be used as a tool to evaluate potential roof failure and optimize the stability of room and pillar layouts. (cdc.gov)
The approach presented in the paper is demonstrated for mapping the adsorption kinetics of carbon dioxide (CO2) on a Pittsburgh coal sample to demonstrate the applicability of the method for an extreme case and also for the environmental importance of sequestration studies. (cdc.gov)

X-ray computed tomography (XCT) can be used to identify lithologies and deformation structures within geological core, with the potential for the identification processes to be applied automatically. (frontiersin.org)
We used the locally sparse tomography (LST) method, an unsupervised machine learning approach that learns to represent small scale geophysical structures directly from measurements. (scec.org)

Our findings suggest that a cardiac PET strategy may represent a rational approach to non-invasively monitor metabolic pathway remodeling following sunitinib treatment. (nih.gov)
Noninvasive and more specific functional monitoring of inflammatory activity as, for example, through multispectral optoacoustic tomography (MSOT) could improve the assessment of treatment response. (snmjournals.org)
Such an algorithmic approach will prevent misdiagnosis and delay in appropriate treatment of the aggressive lesions. (scirp.org)

A manual ROI approach was the optimal method for detecting progressive cpRNFL loss compared with an automatic ROI approach and the global cpRNFL thickness measure. (arvojournals.org)
Jisoo was awarded for his development of the method "Time-resolved x-ray scattering tomography for rheological studies", and is co-recipient of the award with Yanqi Luo from the Advanced Photons Source for her work on applications. (psi.ch)

An analysis of a numerical-model-based approach for estimating the changes in both the horizontal and vertical loading conditions induced by an approaching longwall face. (cdc.gov)

Accurate mapping is important because surgical approach, reduction, fixation, and implant design and selection are based on fracture patterns. (healthpartners.com)

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

Computed tomography2

Beam Computed Tomography6

Cryo-electron t2

Electrical impedance5

Atom probe tomo1

Virtual tomography1

Electron tomography2

20222

Risk stratification1

Reconstruction5

Multidetector4

Ultrasound3

Contrast2

20191

Scan2

Modality1

Optical5

Methods1

Specimens2

Commonly1

Ambient noise1

Clinical3

Chest3

Medscape1

Imaging10

Experimental1

Derive1

Tissue2

Detection1

Measurement2

Characterization1

Spatial distribution1

Tooth1

Arterial1

Scans1

Radiographic1

Evaluation2

Diagnosis1

Acute2

Bayesian1

Lung2

Electrode1

Conventional2

Involves1

Significantly1

Observations1

Degradation2

Paper2

Structures2

Treatment3

Method2

Horizontal1

Fixation1