Patent ID: 11860320
Assignee: SIEMENS MEDICAL SOLUTIONS USA, INC.
Field: Environmental technology (Chemistry)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A single photon emission computed tomography (SPECT) system comprising:
a gamma camera;
a shielded point source connected to emit radiation at the gamma camera;
detection electronics configured to detect emissions, including the radiation from the shielded point source and radioisotope emissions from a patient, a radioisotope of the shielded point source being different than any source of the radioisotope emissions from within the patient, and the detection electronics configured to detect the radiation during detection of the radioisotope emissions; and
a processor configured to correct for dead time of the detection electronics, the correction being a function of the detection of the radiation from the shielded point source and a constant known emission rate of the radiation of the radioisotope of the shielded point source.