Normalization Crystal Efficiencies Estimation For Continuous Motion Bed Acquisition
AssigneeSiemens Medical Solutions USA, Inc.
InventorVladimir Y. Panin
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Abstract
A method and system for simultaneously monitoring a positron emission tomography scanner performance during a continuous-bed-motion acquisition is disclosed.
Claims15
A method for simultaneously monitoring a positron emission tomography (PET) scanner performance during a continuous-bed-motion (CBM) acquisition, wherein the PET scanner has a patient bed that moves a patient in an axial motion through the PET scanner during the CBM acquisition, the method comprising:
- (a) generating time-of-flight (TOF) patient data during the CBM acquisition, while accounting for the axial motion of the patient bed during the CBM acquisition, as a first data set;
- (b) generating a complimentary data set by integrating the TOF patient data over the axial motion of the patient bed during the CBM acquisition;
- and
- (c) simultaneously reconstructing the activity and crystal efficiency normalization coefficient from the complimentary data set.
A positron emission tomography (PET) calibration system comprising:
- a PET scanner having a patient bed that moves a patient in an axial motion through the PET scanner during the CBM acquisition;
- and
- a scintillation crystal efficiency calibration system that performs a method comprising:
- (a) generating time-of-flight (TOF) patient data during the CBM acquisition, while accounting for the axial motion of the patient bed during the CBM acquisition, as a first data set;
- (b) generating a complimentary data set by integrating the TOF patient data over the axial motion of the patient bed during the CBM acquisition;
- and
- (c) simultaneously reconstructing the activity and crystal efficiency normalization coefficient from the complimentary data set.
A non-transitory, machine readable storage medium encoded with computer program software, such that when a processor executes the computer program software, the processor performs a method for simultaneously monitoring a positron emission tomography (PET) scanner performance during a continuous-bed-motion (CBM) acquisition, wherein the PET scanner has a patient bed that moves a patient in an axial motion through the PET scanner during the CBM acquisition, the method comprising:
- (a) generating time-of-flight (TOF) patient data during the CBM acquisition, while accounting for the axial motion of the patient bed during the CBM acquisition, as a first data set;
- (b) generating a complimentary data set by integrating the TOF patient data over the axial motion of the patient bed during the CBM acquisition;
- and
- (c) simultaneously reconstructing the activity and crystal efficiency normalization coefficient from the complimentary data set.
Dependencies are inferred from the claim text.