SPECT only images low-energy gamma rays less than 400 kilo-electron volts (keV), and PET can image only positron emitting sources of 511keV. Thus, the use of a Compton camera, which can image ...

Single photon emission computed tomography (SPECT) is a form of non-invasive ... These rays are then detected by the gamma camera which rotates through 360 degrees around the patient.