US 12,243,127 B2
Medical image processing method, medical image processing apparatus, and computer readable non-volatile storage medium storing medical image processing program
Tzu-Cheng Lee, Mundelein, IL (US); Jian Zhou, Buffalo Grove, IL (US); Liang Cai, Vernon Hills, IL (US); Zhou Yu, Glenview, IL (US); Masakazu Matsuura, Nasushiobara (JP); Takuya Nemoto, Hitachinaka (JP); and Hiroki Taguchi, Otawara (JP)
Assigned to Canon Medical Systems Corporation, Otawara (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Otawara (JP)
Filed on Mar. 18, 2022, as Appl. No. 17/699,008.
Claims priority of provisional application 63/171,700, filed on Apr. 7, 2021.
Prior Publication US 2022/0327750 A1, Oct. 13, 2022
Int. Cl. G06T 11/00 (2006.01); G06T 7/00 (2017.01)
CPC G06T 11/005 (2013.01) [G06T 7/0012 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20016 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A medical image processing method, comprising:
obtaining a first set of projection data by performing, with a first computed tomography (CT) apparatus comprising a first detector with a first pixel size, a first CT scan of an object in a first imaging region of the first detector;
obtaining a first CT image with a first resolution by reconstructing the first set of projection data by modifying the first pixel size to a second pixel size, wherein the first CT image is used as an input image for a machine-learning model;
obtaining a processed CT image with a resolution higher than the first resolution by applying the machine-learning model for resolution enhancement to the first CT image; and
displaying the processed CT image or outputting the processed CT image for analysis, wherein
the machine-learning model is obtained by training using a second CT image generated based on a second set of projection data which is acquired by performing, with a second CT apparatus comprising a second detector with the second pixel size smaller than the first pixel size, a second CT scan of the object in a second imaging region of the second detector, the second imaging region being smaller than the first imaging region, wherein the second CT image is used as a target image for the input image.