Invention Application
- Patent Title: TWO-STEP MATERIAL DECOMPOSITION CALIBRATION METHOD FOR A FULL SIZE PHOTON COUNTING COMPUTED TOMOGRAPHY SYSTEM
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Application No.: US17571087Application Date: 2022-01-07
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Publication No.: US20220128488A1Publication Date: 2022-04-28
- Inventor: Xiaohui ZHAN , Xiaofeng NIU
- Applicant: CANON MEDICAL SYSTEMS CORPORATION
- Applicant Address: JP Otawara-shi
- Assignee: CANON MEDICAL SYSTEMS CORPORATION
- Current Assignee: CANON MEDICAL SYSTEMS CORPORATION
- Current Assignee Address: JP Otawara-shi
- Main IPC: G01N23/046
- IPC: G01N23/046 ; A61B6/03 ; A61B6/00 ; G01N23/083
Abstract:
A method and a system for providing calibration for a photon counting detector forward model for material decomposition. The flux independent weighted bin response function is estimated using the expectation maximization method, and then used to estimate the pileup correction terms at each tube voltage setting for each detector pixel.
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