Small footprint multi-use SPECT system

A method comprising:

• generating a first tomographic image of a subject based on first gamma rays detected by a detector while the detector is disposed at a first position with respect to the subject;
• generating a second tomographic image of the subject based on second gamma rays detected by the detector while the detector is disposed at a second position with respect to the subject;
• identifying one or more structures of the subject depicted in the first tomographic image and the second tomographic image;
• and
• generating a composite tomographic image by aligning first pixels of the first tomographic image depicting the identified one or more structures with second pixels of the second tomographic image depicting the identified one or more structures.

A system comprising:

• a gamma ray detector;
• and
• a control system to:
• generate a first tomographic image of a subject based on first gamma rays detected by the detector while the detector is disposed at a first position with respect to the subject;
• identify a region of interest within the first tomographic image;
• determine a second detector position based on the region of interest;
• move the detector to the second position;
• and
• generate a second tomographic image of the subject based on second gamma rays detected by the detector while the detector is disposed at the second position;
• identify one or more structures of the subject depicted in the first tomographic image and the second tomographic image;
• and
• generate a composite tomographic image by aligning first pixels of the second tomographic image depicting the one or more structures with second pixels of the third tomographic image depicting the one or more structures.