2021 Oct 9. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 Jan–.
ABSTRACT
Single-photon emission computed tomography (SPECT) is a nuclear imaging modality used frequently in diagnostic medicine. At its most basic level, SPECT produces a 3-dimensional image of the distribution of a radioactive tracer (sometimes called a probe) injected into the bloodstream and subsequently taken up by certain tissues. This is accomplished via the use of specialized nuclear medicine cameras.
Thus, SPECT allows the clinician to assess the perfusion and functionality of specific tissues. The ability to assess tissue functionality and physiology is what sets SPECT imaging apart from purely anatomic imaging modalities such as computed tomography, magnetic resonance imaging, and roentgenography.