US 12,433,548 B2
Medical image processing device, computer program, and nuclear medicine device
Hideaki Tashima, Chiba (JP); and Taiga Yamaya, Chiba (JP)
Assigned to NATIONAL INSTITUTES FOR QUANTUM SCIENCE AND TECHNOLOGY, Chiba (JP)
Appl. No. 17/907,923
Filed by NATIONAL INSTITUTES FOR QUANTUM SCIENCE AND TECHNOLOGY, Chiba (JP)
PCT Filed Mar. 4, 2021, PCT No. PCT/JP2021/008383
§ 371(c)(1), (2) Date Mar. 28, 2023,
PCT Pub. No. WO2021/182281, PCT Pub. Date Sep. 16, 2021.
Claims priority of application No. 2020-044795 (JP), filed on Mar. 13, 2020.
Prior Publication US 2023/0218243 A1, Jul. 13, 2023
Int. Cl. A61B 6/03 (2006.01); A61B 6/42 (2024.01); G01N 23/20066 (2018.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01)
CPC A61B 6/037 (2013.01) [A61B 6/4258 (2013.01); G01N 23/20066 (2013.01); G06T 7/0012 (2013.01); G06T 11/003 (2013.01); G06T 2207/10104 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A medical image processing device for reconstructing an image by iterative approximation using a PET event where a coincidence signal of a pair of annihilation radiations is obtained and a Compton event is obtained by Compton scattering, the medical image processing device comprising:
a computer configured to perform a set of functions, comprising:
produce a PET event updated image by updating a current image using a PET event;
produce a Compton event updated image by updating the current image using a Compton event;
weight and add the PET event updated image and the Compton event updated image produced independently of each other;
update the current image using an image obtained by the weighting and adding of the PET event updated image and the Compton event updated image; and
iterate processing of the PET event updated image, the Compton event updated image, the weighting and adding of the PET event updated image and the Compton event updated image, and the updating of the current image using the image obtained by the weighting and adding of the PET event updated image and the Compton event updated image.