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CT machine

A rack and radioactive source technology, applied in the field of CT equipment for non-destructive detection of human diseases, can solve the problems of human injury, expand the irradiation area, increase the amount of radiation, etc., and achieve the effects of fast adjustment speed, clear images, and reduced radiation energy

Inactive Publication Date: 2003-05-28
PHILIPS CHINA INVESTMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

In the application, it is felt that the fan angle, fan beam center, and fan beam width of the rays emitted by the ray element in this CT machine cannot be changed with the change of the subject's body shape or can only change the fan beam width, so there is an expansion Irradiate the surface, increase the amount of radiation, and cause certain harm to the human body

Method used

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Embodiment Construction

[0014] Depend on Figure 1-6 It can be seen that a kind of CT machine is based on the existing CT machine including frame, detection device, rotating plate, rotating shaft and radioactive source, and below the radioactive source, there is a beam-limiting beam that can rotate around the system axis and can work intelligently. The beam limiter includes an intelligent control device and a mechanical transmission mechanism controlled by it. The intelligent control device includes: a servo controller, a servo, a servo motor, a position detector, an incremental encoder, and an angle encoder. And zero signal, the servo controller includes XC2S150 type with FPGA function circuit and DM74ALS245, SN74LS540 type with bus buffer digital circuit, XC18V02 type with ISPPROM function digital circuit, 26LS31 type with differential transmission function digital circuit, TLP521 -1, TLP521-4 digital circuit with optocoupler function, at the same time, through DZ 6 、DZ 5 The interface is also co...

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Abstract

A CT machine is composed of radioactive source, detector system, machine frame, rotary plate and rotary axle, and is characterized by its additional intelligent beam limiter for regualting the central position and width of sectorial ray beam. Said beam limiter consists of the intelligent controller composed of servo controller, servo unit, servo motor, position detector, angle encoder, and zero-position signalling unit, and the mechanical transmission mechanism. Its advantages are low radiant energy, high scan speed and high clearness of image.

Description

Technical field [0001] The invention relates to medical equipment, in particular to CT machine equipment for non-destructive detection of human diseases. Background technique [0002] Currently commercially available CT machines are mainly composed of radioactive sources, detectors, DAS system imaging systems, display systems, beds and rotating parts, wherein: radioactive sources and detection systems are installed on racks that can rotate around the axis, and The supporting device is installed in the bed and can move along the axis of the system. When the radiation beam from the radiation source passes through the subject and reaches the detector, a signal is generated, which is converted by the DAS system and input to the imaging system. Create a layered two-dimensional cross-sectional image. In the application, it is felt that the fan angle, fan beam center, and fan beam width of the rays emitted by the ray element in this CT machine cannot be changed with the change of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/02
Inventor 台谨贤楼珊珊相欣祝建华
Owner PHILIPS CHINA INVESTMENT
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