Single-photon
Single-photon emission computed tomography (SPECT) is a nuclear medicine tomographic imaging technique using gamma rays. It provides 3D information as opposed to the 2D information provided by a conventional gamma camera. It is similar to conventional nuclear medicine planar imaging using a gamma camera (that is, scintigraphy), but can provide true 3D information.
Procedure[edit | edit source]
The patient is injected with a gamma-emitting radioisotope, which is taken up by the organ or tissue of interest. The gamma camera captures emitted radiation, and the computer attached to it reconstructs 3D images.
Applications[edit | edit source]
SPECT can be used to complement any gamma imaging study, where a true 3D representation can be helpful, such as tumor imaging, heart imaging, and brain imaging.
Advantages and Disadvantages[edit | edit source]
SPECT imaging is less expensive and more widely available than PET imaging. However, the images obtained by SPECT are less detailed and have a lower resolution than those obtained by PET.
See Also[edit | edit source]
References[edit | edit source]
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