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Noise reduction method of CT system, and CT system

A technology of noise and noise sensors, which is applied in the direction of radiological diagnostic instruments, medical science, computerized tomography scanners, etc., to achieve consistent noise levels, reduce maximum noise, and improve comfort

Inactive Publication Date: 2018-01-09
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the problem of reducing the overall noise when the CT system works

Method used

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  • Noise reduction method of CT system, and CT system
  • Noise reduction method of CT system, and CT system
  • Noise reduction method of CT system, and CT system

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Embodiment Construction

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] figure 1 Is a schematic diagram of the structure of a computer tomography system, refer to figure 1 , The computed tomography system 100 includes a gantry 110, and the gantry 110 has a rotor 130 that rotates around the system axis. The rotor 130 has an X-ray system including an X-ray source 131 and an X-ray detector 132 oppositely arranged. There is also an examination bed 120 on which the subject can be pushed into the scanning cavity 133 along the Z-axis direction during the examination. The X-ray source 131 rotates around the Z-axis, and the detector 132 moves with the X-ray source 131 to collect projection measurement data, which is later used to reconstruct the image. A spiral scan can also be performed. D...

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PUM

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Abstract

The invention discloses a noise reduction method of a CT system. The CT system comprises a rack, wherein the rack comprises a rotor which can be rotated around an axis as well as a heat dissipation fan used for heat dissipation in the rack. The method comprises the steps that a rotation speed of the rotor is determined and controlled; and during CT, the rotation speed of the heat dissipation fan is adjusted, so noise caused by the heat dissipation fan and noise caused by the rotor can overlay each other to form integral noise which can be controlled in a certain scope. The method disclosed bythe invention is characterized in that the rotation speed of the heat dissipation fan is determined according to the rotation speed of the rotor or the noise inside the rack; when the rotation speed of the rotor is high, the rotation speed of the heat dissipation fan is reduced; when the rotation speed of the rotor is reduced, the rotation speed of the heat dissipation fan is increased; hence, thenoise caused by the rotor and the noise caused by the heat dissipation fan can compensate each other; and maximum noise of the CT system during a whole scanning course can be reduced effectively, andcomfort of a testee can be enhanced. In addition, the invention also provides the CT system.

Description

【Technical Field】 [0001] The invention relates to the technical field of computer tomography (Computed Tomography, CT), in particular to a noise reduction method of a CT system and a CT system. 【Background technique】 [0002] CT (Computed Tomography) uses X-rays to scan specific parts of the human body at a certain thickness. Since different human tissues have different X-ray absorption capabilities, the tomographic images can be reconstructed by computers. [0003] The CT system includes a gantry with a rotor that can rotate around the axis of the gantry. The rotor has an X-ray source and an X-ray detector arranged oppositely. Because the X-ray source emits a lot of heat when working Therefore, a cooling fan for heat dissipation is also required on the rack. [0004] When the CT system is working, in order to ensure the comfort of the examinee, the examinee can receive the CT scan in a relatively quiet environment, so the overall noise of the CT system needs to be controlled. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00A61B6/03
Inventor 缪俊杰
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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