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... > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Radionuclide Imaging > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Techniques, Radioisotope > Radionuclide Imaging > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Image Interpretation, Computer-Assisted > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
Diagnosis > Diagnosis, Computer-Assisted > Image Interpretation, Computer-Assisted > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Information Science > Informatics > Medical Informatics > Medical Informatics Applications > Decision Making, Computer-Assisted > Diagnosis, Computer-Assisted > Image Interpretation, Computer-Assisted > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Tomography > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Information Science > Computing Methodologies > Image Processing, Computer-Assisted > Image Enhancement > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
Investigative Techniques > Photography > Image Enhancement > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon
... > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Photography > Image Enhancement > Tomography, Emission-Computed > Tomography, Emission-Computed, Single-Photon

Preferred term

Tomography, Emission-Computed, Single-Photon  

Type

  • Topical Descriptor

Broader concept

Narrower concepts

Entry terms

  • CAT Scan, Single Photon Emission
  • CAT Scan, Single-Photon Emission
  • CT Scan, Single Photon Emission
  • CT Scan, Single-Photon Emission
  • Emission-Computed Tomography, Single-Photon
  • Radionuclide Tomography, Single Photon Emission Computed
  • Radionuclide Tomography, Single-Photon Emission-Computed
  • Single Photon Emission Computed Tomography
  • Single-Photon Emission-Computed Tomography
  • Single Photon Emission Computer Assisted Tomography
  • Single-Photon Emission Computer-Assisted Tomography
  • Single Photon Emission Computerized Tomography
  • Single-Photon Emission Computerized Tomography
  • Single Photon Emission CT Scan
  • Single-Photon Emission CT Scan
  • SPECT
  • Tomography, Single-Photon Emission-Computed
  • Tomography, Single-Photon, Emission-Computed

Scope note

  • 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.

History note

  • 90; was SINGLE PHOTON EMISSION COMPUTED TOMOGRAPHY & SPECT see TOMOGRAPHY, EMISSION-COMPUTED 1989

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URI

http://www.yso.fi/onto/mesh/D015899

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RDF/XML TURTLE JSON-LD Created 5/16/89, last modified 7/8/08