Patent ID: 11890128
Assignee: NATIONAL YANG MING CHIAO TUNG UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
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.