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E01.370.384.730.800.800 E01.370.350.600.350.800.800 E01.370.350.350.800.800 E01.370.350.825.800.800 E01.370.350.710.800.800
skos:altLabel
Tomoscintigraphie à émission monophotonique CAT Scan, Single Photon Emission TEMP Single Photon Emission Computer Assisted Tomography Single-Photon Emission-Computed Tomography Single-Photon Emission Computerized Tomography Single-Photon Emission CT Scan Tomographie d'émission monophotonique Tomoscintigraphie d'émission monophotonique Single-Photon Emission Computer-Assisted Tomography Tomographie à émission monophotonique CT Scan, Single-Photon Emission Emission-Computed Tomography, Single-Photon CAT Scan, Single-Photon Emission Tomoscintigraphie à émission de simple photon Tomography, Single-Photon Emission-Computed Gamma-tomographie Tomography, Emission-Computed, Single-Photon Single Photon Emission Computerized Tomography Single Photon Emission CT Scan SPECT CT Scan, Single Photon Emission Radionuclide Tomography, Single-Photon Emission-Computed Tomography, Single-Photon, Emission-Computed Single Photon Emission Computed Tomography Radionuclide Tomography, Single Photon Emission Computed SPECT (Single-Photon Emission-Computed Tomography)
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Tomographie par émission monophotonique
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A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image