Patent ID: 11857357
Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 11:
12. The SPECT system of claim 11, wherein
the photons detected by the detector include a first count of photons that pass through the first set of first pinholes, and a second count of photons that pass through the second set of second pinholes;
the first count of photons include a plurality of first photons each of which having the first energy and a plurality of second photons each of which having the second energy;
the second count of photons include a plurality of third photons each of which having the first energy and a plurality of fourth photons each of which having the second energy; and
a first ratio of a count of the first photons to a count of the second photons is different from a second ratio of a count of the third photons to a count of the fourth photons.