US 12,306,362 B2
PCCT energy calibration from X-ray tube spectra using a neural network
Kent C. Burr, Vernon Hills, IL (US); Nikolay Markov, Vernon Hills, IL (US); and Yi Qiang, Vernon Hills, IL (US)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed on Jan. 11, 2023, as Appl. No. 18/152,856.
Prior Publication US 2024/0230934 A1, Jul. 11, 2024
Int. Cl. G01T 7/00 (2006.01); G06N 3/08 (2023.01)
CPC G01T 7/005 (2013.01) [G06N 3/08 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for calibrating a detector, the method comprising:
acquiring a first energy spectrum obtained from a scan using an X-ray tube as a source of radiation;
estimating calibration parameters, for each of a plurality of 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 estimated calibration parameters.