single photon emission computed tomography
noun
: a medical imaging technique that is used especially for mapping brain function and that is similar to positron-emission tomography in using the photons emitted by the agency of a radioactive tracer to create an image but that differs in being able to detect only a single photon for each nuclear disintegration and in generating a lower-quality image
—abbreviation SPECT
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“Single photon emission computed tomography.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/single%20photon%20emission%20computed%20tomography. Accessed 31 Oct. 2025.
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