SPECT-CT: Technology and Physics

  • Agustín Ruiz Martínez


Single photon emission computed tomography (SPECT) is an imaging technique that uses a gamma camera to produce a functional 3D distribution of a photon emitter radionuclide within the body, whereas computed tomography (CT) uses an external source of x-rays to produce anatomical 3D images. From a clinical point of view, therefore, a combined SPECT/CT system could provide both functional and anatomical images. At the same time, it can also accurately generate an attenuation correction of the SPECT images. From a technological point of view, although each technique is based on a different physical process to acquire the data (emission of radiation by the patient in SPECT and transmission of radiation through the patient in CT), the two have similarities in image formation and image reconstruction processes.


Single Photon Emission Compute Tomography Attenuation Correction Compute Tomography Coronary Angiography Single Photon Emission Compute Tomography Image Single Photon Emission Compute Tomography Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Agustín Ruiz Martínez
    • 1
  1. 1.Department of Nuclear MedicineUniversitat Autònoma de Barcelona, Hospital de la Santa Creu i Sant PauBarcelonaSpain

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