US 12,082,953 B2
Systems and methods for positioning
Xiaofen Zhao, Shanghai (CN)
Assigned to SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed by SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD., Shanghai (CN)
Filed on Sep. 3, 2021, as Appl. No. 17/446,835.
Claims priority of application No. 202010916972.0 (CN), filed on Sep. 3, 2020.
Prior Publication US 2022/0061781 A1, Mar. 3, 2022
Int. Cl. A61B 6/04 (2006.01); A61B 6/00 (2006.01); A61B 6/46 (2024.01); A61B 6/58 (2024.01); G06F 3/0482 (2013.01); G06F 3/04847 (2022.01); G06T 7/00 (2017.01); G06T 7/50 (2017.01); G06T 7/70 (2017.01); A61B 5/055 (2006.01)
CPC A61B 6/0487 (2020.08) [A61B 6/0407 (2013.01); A61B 6/465 (2013.01); A61B 6/467 (2013.01); A61B 6/488 (2013.01); A61B 6/54 (2013.01); A61B 6/582 (2013.01); G06F 3/0482 (2013.01); G06F 3/04847 (2013.01); G06T 7/0012 (2013.01); G06T 7/50 (2017.01); G06T 7/70 (2017.01); A61B 5/055 (2013.01); G06T 2200/24 (2013.01); G06T 2207/30004 (2013.01); G06T 2207/30196 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
at least one storage device including a set of instructions; and
at least one processor configured to communicate with the at least one storage device, wherein when executing the set of instructions, the at least one processor is configured to direct the system to perform operations including:
obtaining data associated with a scanning range of a subject, wherein the scanning range of the subject includes to a first anatomical location of the subject and a second anatomical location of the subject;
obtaining an image of the subject on a couch of a medical radiation device, the image being acquired by an imaging device when the couch is at a first position;
determining, based on the data associated with the scanning range of the subject, a position of the scanning range of the subject in the image; and
causing, based on the position of the scanning range in the image, the couch to move to a second position, including:
obtaining a transforming relationship between a first coordinate system applied to the image and a second coordinate system, wherein the second coordinate system is a spatial coordinate system which is established based on a position of the medical radiation device, the transforming relationship including a transforming ratio of a number of pixels in the image to a corresponding distance in the second coordinate system;
determining, based on the transforming relationship, the first position of the couch in the second coordinate system;
determining, based on the position of the scanning range in the image, a first count of pixels from the first anatomical location to a radiation region of the medical radiation device in the image along a long axis of the couch;
determining, based on the position of the scanning range in the image, a second count of pixels from the second anatomical location to the radiation region of the medical radiation device in the image along the long axis of the couch;
determining, based on the first count of pixels, a first distance from the first anatomical location to the radiation region in the second coordinate system;
determining, based on the second count of pixels, a second distance between the second anatomical location to the radiation region in the second coordinate system; and
determining, based on the first distance, the second distance, the first position, and the transforming ratio, the second position of the couch.