US 12,188,882 B2
Method and device for controlling output beam of ray machine in imaging system, and CT imaging system
Zhiqiang Chen, Beijing (CN); Li Zhang, Beijing (CN); Yunda Sun, Beijing (CN); Zhenhua Zhao, Beijing (CN); Xin Jin, Beijing (CN); Le Shen, Beijing (CN); and Wuyang Liang, Beijing (CN)
Assigned to Nuctech Company Limited, Beijing (CN); and Tsinghua University, Beijing (CN)
Filed by Nuctech Company Limited, Beijing (CN); and Tsinghua University, Beijing (CN)
Filed on Nov. 4, 2022, as Appl. No. 18/052,671.
Claims priority of application No. 202111310304.4 (CN), filed on Nov. 5, 2021.
Prior Publication US 2023/0144259 A1, May 11, 2023
Int. Cl. G01N 23/046 (2018.01); G01N 23/083 (2018.01); G06T 11/00 (2006.01)
CPC G01N 23/046 (2013.01) [G01N 23/083 (2013.01); G06T 11/005 (2013.01); G01N 2223/04 (2013.01); G01N 2223/419 (2013.01); G01N 2223/643 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for controlling an output beam of a ray machine in an imaging system, the imaging system comprising a ray machine, a detector, a conveying device and an encoder arranged on the conveying device, and the method comprising:
receiving an encoder signal and a ray machine output beam signal, and initially synchronizing the encoder signal and the ray machine output beam signal;
recording a coded value M of the encoder at moment tm and a coded value N of the encoder at moment tm+1, where M, N, and m are integers;
determining that a duration from the moment tm to the moment tm+1 is an actual output beam time interval T of the ray machine, when it is determined that a difference value between the coded value M and the coded value N satisfies a preset value a, a where a is an integer;
determining a gap time TG in the actual output beam time interval T based on a preset output beam time interval TJ of the imaging system and the actual output beam time interval T; and
controlling the ray machine not to emit a beam within the gap time TG.