Results 251 to 260 of about 294,097 (293)

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
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Infrared emission computed tomography

Annual Meeting Optical Society of America, 1985
The problem of deducing the temperature profile of a weakly inhomogeneous, incoherent radiating object from external field measurements is addressed within the framework of classical second-order scalar coherence theory. Within this framework it is shown that the problem can be cast into an inverse radiometric problem using the concepts of generalized ...
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Single-photon emission-computed tomography (SPECT)

1998
Abstract Although the principles of single-photon ennssioncomputed tomography (SPECT) have been well understood for many years and several centres were using SPECT clinically in the late 1960s and early 1970s, there has been a dramatic increase in the number of SPECT installations in recent years. In the early 1980s, however, SPECT was a
Howard G. Gemmell, Roger T. Staff
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Positron emission tomography and single photon emission computed tomography

Current Opinion in Neurology, 1996
Neuroimaging techniques have had a dramatic impact on the evaluation and treatment of patients with epilepsy. In order to take full advantage of their potential, it is important to place them in clinical and electrophysiological context and to understand their technical limitations. Positron emission tomography with 18F-2-deoxyglucose and single photon
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[Positron emission computed tomography].

Journal of cardiology. Supplement, 1989
Positron emission computed tomography (PET) provides high quality tomographic images of the heart with accurate attenuation correction. The use of various compounds labeled with ultra-short lived positron-emitting radionuclides, such as 11C, 13N, 15O and 18F, allows physiological and biochemical measurements in vivo.
K, Torizuka, S, Koga
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Single-photon Emission Computed Tomography

2016
Single-Photon Emission Computed Tomography (SPECT) is the most widely used nuclear imaging technique in cardiology, playing an important role in the detection of coronary artery disease (CAD), viability assessment, and risk stratification. Myocardial perfusion imaging (MPI) improves the sensitivity and specificity over standard exercise stress testing ...
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Single-Photon Emission Computed Tomography (SPECT)

2003
Single-photon emission computed tomography (SPECT) is a nuclear medicine technique that provides tomographic images of the distribution of radiopharmaceuticals in the body. Radiopharmaceuticals have been developed to image cerebral perfusion as well as a wide range of brain neurotransmitter systems, especially the dopamine system.
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Single Positron Emission Computed Tomography

2007
Single photon emission computed tomography (SPECT) allows the user to obtain a threedimensional (3D) representation of the patient’s in vivo radiopharmaceutical distribution. Planar nuclear imaging leads to a twodimensional (2D) image of a 3D object.
Frederic H. Fahey, Beth A. Harkness
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Single Photon Emission Computer Tomography

2018
In diesem Kapitel wird in den hauptsachlichen Aufbau und die wesentliche Funktionsweise konventioneller SPECT-Systeme eingefuhrt, wie sie in der standardmasigen nuklearmedizinischen Diagnostik Anwendung finden. Den zentralen Bestandteil eines konventionellen SPECT-Systems bilden i. Allg. mehrere Gammakameras, welche an einer rotierenden Aufnahmeeinheit
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Single Photon Emission Computed Tomography

2006
Conventional gamma cameras provide two-dimensional planar images of three-dimensional objects. Structural information in the third dimension, depth, is obscured by superimposition of all data along this direction. Although imaging of the object in different projections (posterior, anterior, lateral, and oblique) gives some information about the depth ...
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