Patent ID: 8378305

Claim:
A dual detector positron emission tomography (PET) system including: a primary PET detector array that provides a first set of acquired PET data; a position processor that receives the PET data and processes the PET data to determine positions on the primary detector array at which radiation is detected; a coincidence binner that receives the processed PET data and defines pairs of events that are associated with common disintegration events; a secondary PET detector array that provides a second set of acquired PET data directly to the coincidence binner; a reconstruction processor that reconstructs the first set of PET data into a first image and reconstructs the second set of PET data into a second image; and an adjustable PET detector ring having a first plurality of radially movable detectors and a second plurality of detectors, the first plurality of detectors being movable to form a larger ring with the second plurality of detectors when positioned at a first position and form a smaller ring comprising only the first plurality of detectors when positioned at a second position that is radially inward from the first position.