Results 261 to 270 of about 425,854 (315)

Emission Computed Tomography Simulator

IEEE Transactions on Nuclear Science, 1980
We have designed and built a system to simulate emission computed tomography (ECT) devices and measure physical parameters of the component parts in such systems. It consists of a heavy duty X, Y, Z, ? scanning table under computer control through CAMAC with modular NIM electronics for signal processing.
Anthony R. Ricci, Edward J. Hoffman, Michael E. Phelps, Gerald C. Low, David E. Kuhl   +4 more
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Emission computed tomography

Seminars in Nuclear Medicine, 1977
Although there are many common aspects to x-ray transmission and radionuclide emission computerized tomography, (ECT) there are added difficulties and a number of particular factors that form the basis of ECT. At this time, the instrumentation design and application strategies in ECT are diverse and in a stage of rapid development.
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Single-Photon Emission Computed Tomography/Computed Tomography in Endocrinology

Seminars in Nuclear Medicine, 2006
The introduction of fusion of functional and anatomical imaging modalities into the field of endocrinology led to a major breakthrough in diagnosis, staging, and follow-up of patients with endocrine tumors. The management of endocrine tumors is based on a wide variety of conventional techniques, including computed tomography, ultrasound, or magnetic ...
Yodphat, Krausz, Ora, Israel
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Hyperparameter estimation for emission computed tomography data

Proceedings 1999 International Conference on Image Processing (Cat. 99CH36348), 1999
Although many statistical methods have been proposed for the restoration of tomographic images, their use in medical environments has been limited due to two important factors. These factors are the need for greater computational time than deterministic methods and the selection of the hyperparameters in the image models.
Antonio López, Rafael Molina 0001, Aggelos K. Katsaggelos   +2 more
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Introduction to neutron stimulated emission computed tomography

Physics in Medicine and Biology, 2006
Neutron stimulated emission computed tomography (NSECT) is presented as a new technique for in vivo tomographic spectroscopic imaging. A full implementation of NSECT is intended to provide an elemental spectrum of the body or part of the body being interrogated at each voxel of a three-dimensional computed tomographic image.
Carey E, Floyd, Janelle E, Bender, Amy C, Sharma, Anuj, Kapadia, Jessie, Xia, Brian, Harrawood, Georgia D, Tourassi, Joseph Y, Lo, Alexander, Crowell, Calvin, Howell   +9 more
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Electrocardiographic Gating in Positron Emission Computed Tomography

Journal of Computer Assisted Tomography, 1979
Electrocardiographic (ECG) synchronized multiple gated data acquisition was employed with positron emission computed tomography (ECT) to obtain images of myocardial blood pool and myocardium. The feasibility and requirements of multiple gated data acquisition in positron ECT were investigated for 13NH3, (18F)-2-fluoro-2-D-deoxyglucose, and (11C ...
E J, Hoffman, M E, Phelps, G, Wisenberg, H R, Schelbert, D E, Kuhl   +4 more
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Single Photon Emission Computed Tomography of the Thyroid*

The Journal of Clinical Endocrinology & Metabolism, 1988
Single photon emission computed tomography (SPECT) entails imaging at multiple positions along an arc and computed-assisted reconstruction of transaxial, coronal, and sagittal images. To determine if SPECT imaging of the thyroid augments information provided by planar imaging, both SPECT and pinhole planar scans were performed in 52 patients with ...
J J, Chen, N D, LaFrance, M D, Allo, D S, Cooper, P W, Ladenson   +4 more
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Hepatic Hemangioma Diagnosis by Emission Computed Tomography

Clinical Nuclear Medicine, 1986
Hepatic hemangiomas in an asymptomatic patient usually require no treatment. Therefore, noninvasive diagnosis of this entity is critical to avoid an unnecessary diagnostic laparotomy and/or closed biopsy, the latter potentially leading to massive or fatal hemorrhage.
M A, Talley, D L, Nguyen, J C, Leonard
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Myocardial Imaging Using Emission Computed Tomography

Radiology, 1978
Single-photon emission computed tomography (ECT) was evaluated during myocardial studies in dogs. Acute anterior and posterior infarcts were imaged following injection of 99mTc-pyrophosphate or 201Tl. In most cases, tomographic delineation of infarct location and extent correlated with tissue section.
J W, Keyes, P F, Leonard, D J, Svetkoff, S L, Brody, W L, Rogers, B R, Lucchesi   +5 more
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Positron emission computed tomography

1985
Regional myocardial blood flow and substrate metabolism can be non-invasively evaluated and quantified with positron emission computed tomography (Positron-CT). Tracers of exogenous glucose utilization and fatty acid metabolism are available and have been extensively tested. Specific tracer kinetic models have been developed or are being tested so that
Maleah Grover, Heinrich R. Schelbert
openaire   +1 more source