X-ray computed tomography (CT) machine

Abstract

The invention relates to an X-ray computed tomography (CT) machine, which comprises a scanning frame, wherein the scanning frame comprises a base, a turntable , a support seat, a bearing and a turntable driving device, the turntable is connected with the base through the bearing, the support seat is connected with the bearing, a part of the turntable driving device is connected with the support seat, the other part of the turntable driving device is connected with the turntable and is used for driving the turntable to rotate relatively to the support seat, the bearing comprises a bearing outer ring and a bearing inner ring, the bearing outer ring is connected with the support seat, a position of the turntable corresponding to the bearing inner ring is provided with an outer convex ring, and the turntable and the bearing inner ring are fixed through a connecting element arranged between the outer convex ring and the bearing inner ring in a penetrating way. The turntable in the X-ray CT machine has higher rotary precision.

Description

Technical field [0001] The present invention relates to the field of medical equipment, in particular to an X-ray CT machine. Background technique [0002] The X-ray CT machine detects the X-rays passing through the object and uses image reconstruction technology to reproduce the internal structure of the object to achieve non-destructive testing. [0003] X-ray CT machine usually consists of scanning frame, scanning table, operating table and other auxiliary equipment. The function of the scanning frame is to drive the X-ray tube and the X-ray detector installed opposite to it to rotate around the scanned object, and collect X-ray data penetrating the scanned object; the function of the scanning bed is to place and drive the scanned object to move according to specified requirements ; The function of the console is to control the entire system and realize data reconstruction to obtain the required images. [0004] With the development of imaging requirements, the structure of CT m...

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Problems solved by technology

[0006] On the other hand, traditional driving methods (belts, gears, etc.) produce relatively loud noises at high speeds. For example, when the speed is higher than 90 R / Min, the noise of the synchronous belt driving method exceeds 70 dB, which is quite harsh in the hospital diagnosis room.

At the same time, the driving force (torque) of the traditional driving method and the processing error of the driving parts will cause the rotation speed fluctuation of the turntable and the vibration of the whole scanning frame, thus affecting the quality of the collected data and the accuracy of the reconstructed image

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