Single photon emission computed tomography (SPECT) scan
Single photon emission computed tomography, or SPECT, produces axial "slices" of the organ in question because the gamma camera rotates around the patient.
These slices are similar to those performed by a CT scan. In certain instances, such as PET scans, three-dimensional (3D) images can be performed using the SPECT data.
The images produced during a SPECT scan can be used to let a doctor analyze the function of internal organs.