Tomography, Emission-Computed : KMLE 의학 검색 엔진 - 의학사전, 의학용어, 의학약어, 의학논문, 약품/의약품 검색

MeSH(Medical Subject Headings) 맞춤 검색 (http://www.nlm.nih.gov) 결과 : 2 페이지: 1

Tomography, Emission-Computed - 새창 Tomography using emissions from radionuclides and a computer algorithm to reconstruct the image.
Synonyms : Computed Tomographic Scintigraphy, Emission-Computed Tomography, Radionuclide-Computed Tomography, Tomography, Computerized Emission, CAT Scans, Radionuclide, Computed Radionuclide Tomography, Emission Computed Tomography, Emission Tomography, Computerized
Tomography, Emission-Computed, Single-Photon - 새창 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.
Synonyms : Emission-Computed Tomography, Single-Photon, Radionuclide Tomography, Single Photon Emission Computed, Single Photon Emission Computed Tomography, Tomography, Single-Photon Emission-Computed