US 11,890,128 B2
Automatic positioning system of computed tomography equipment and the using method thereof
Jyh-Cheng Chen, Taipei (TW); Chien-Heng Liu, Taipei (TW); and Shih-Chun Jin, Taipei (TW)
Assigned to NATIONAL YANG MING CHIAO TUNG UNIVERSITY, Taipei (TW)
Filed by National Yang Ming Chiao Tung University, Taipei (TW)
Filed on Sep. 13, 2021, as Appl. No. 17/473,031.
Claims priority of application No. 110103719 (TW), filed on Feb. 1, 2021.
Prior Publication US 2022/0240885 A1, Aug. 4, 2022
Int. Cl. A61B 6/00 (2006.01); G01T 7/00 (2006.01); A61B 6/03 (2006.01); A61B 90/00 (2016.01)
CPC A61B 6/545 (2013.01) [A61B 6/032 (2013.01); A61B 6/547 (2013.01); A61B 6/582 (2013.01); G01T 7/005 (2013.01); A61B 2090/3966 (2016.02)] 4 Claims
OG exemplary drawing
 
1. An automatic positioning system for positioning computed tomography (CT) equipment, which comprises
a detector fixing jig; a calibration bead; a flat plate with low X-ray attenuation;
an X-Y linear moving rail for horizontal and vertical movement; an X-ray detector; a control module; a driving module; an image processing unit;
wherein the X-ray detector is linked to the detector fixing jig which is fixed on the linear moving rail;
wherein the linear moving rail is installed on a detector end of a CT equipment needed to be positioned and linked with an X-ray tube end of the CT equipment through a rotating arm of CT equipment for allowing the X-ray detector to move horizontally and vertically;
wherein the calibration bead is embedded in the flat plate with low X-ray attenuation and is placed in front of the window of the X-ray tube;
wherein the image processing unit is electrically connected to the control module and the driving module is electrically connected to the control module; and
wherein the image processing unit processes an image positioning procedure to calculate space vectors and calculating a displacement vector from the projected image to the center of the X-ray detector, wherein the displacement vector is sent to the control module for being converted into a calibration instruction which is fed back to the control module and the driving module performs displacement and correction on the X-ray detector according to the calibration instruction.