System, method, and detector module for pet imaging

A method for PET imaging, comprising:

• detecting, using a scintillator array, a plurality of radiation rays, wherein the scintillator array includes N rows of scintillators and M columns of scintillators, each row of scintillators being arranged in a first direction, each column of scintillators being arranged in a second direction;
• generating, using a first set of photosensors, a first set of electrical signals based on the plurality of radiation rays, wherein the first set of photosensors are optically coupled to a first surface of the scintillator array, each photosensor of the first set of photosensors extending longitudinally in the second direction so as to be optically coupled to two or more scintillators in the second direction and being optically coupled to two rows of scintillators arranged in the first direction, each scintillator in the scintillator array being optically coupled to only one photosensor of the first set of photosensors;
• generating, using a second set of photosensors, a second set of electrical signals based on the plurality of radiation rays, wherein the second set of photosensors are optically coupled to a second surface of the scintillator array, each photosensor of the second set of photosensors extending longitudinally in the first direction so as to be optically coupled to two or more scintillators in the first direction and being optically coupled to two columns of scintillators arranged in the second direction, each scintillator in the scintillator array being optically coupled to only one photosensor of the second set of photosensors;
• and
• identifying, using an electronics module, a scintillator within the scintillator array that has interacted with an impinging radiation ray relating to an electrical signal of the first set of electrical signals or the second set of electrical signals.

A detector module configured to receive radiation rays and generate a plurality of light signals in response to the received radiation rays, comprising:

• a scintillator array having N rows of scintillators and M columns of scintillators, each row of scintillators being arranged in a first direction, each column of scintillators being arranged in a second direction;
• a first set of photosensors optically coupled to a first surface of the scintillator array, each photosensor of the first set of photosensors extending longitudinally in the second direction so as to be optically coupled to two or more scintillators in the second direction and being optically coupled to two rows of scintillators arranged in the first direction, each scintillator in the scintillator array being optically coupled to only one photosensor of the first set of photosensors;
• and
• a second set of photosensors optically coupled to a second surface of the scintillator array, each photosensor of the second set of photosensors extending longitudinally in the first direction so as to be optically coupled to two or more scintillators in the first direction and being optically coupled to two columns of scintillators arranged in the second direction, each scintillator in the scintillator array being optically coupled to only one photosensor of the second set of photosensors.