公开(公告)号：US20240230934A1

公开(公告)日：2024-07-11

申请号：US18152856

申请日：2023-01-11

Applicant: CANON MEDICAL SYSTEMS CORPORATION

Inventor： Kent C. BURR ,  Nikolay MARKOV ,  Yi QIANG

IPC: G01T7/00 ,  G06N3/08

CPC classification number: G01T7/005 ,  G06N3/08

Abstract: An apparatus for calibrating a detector, including acquiring an energy spectrum obtained from a scan using an X-ray tube as a source of radiation, estimating calibration parameters, such as a gain and an offset, for each of several channels of the detector by applying the acquired first energy spectrum to inputs of a trained neural network that outputs the calibration parameters, and calibrating each of the plurality of channels using the estimation parameters. The neural network is trained to produce target output calibration parameters, using two or more measurements selected from isotope peak positions, K-edge absorption features, or K-edge emission peaks.