A form of tomography that reconstructs an internal radioactive source from directional counts of individually emitted photons. Known spatial photon absorption gives the exponential path weight in an attenuated Radon transform. Full directed data and a suitable reconstruction formula recover the source intensity rather than a transmitted exterior-beam attenuation map.
Articles by others on the same topic
Single-photon emission computed tomography (SPECT) is a medical imaging technique that is used to visualize and analyze the function of organs and tissues in the body. SPECT is particularly valuable in the fields of cardiology, neurology, and oncology. ### Key Features of SPECT: 1. **Radiotracers**: SPECT imaging involves the use of radiopharmaceuticals, which are radioactive substances that emit gamma photons.