CT (computed tomography) perfusion scanning method and CT perfusion scanning device

A perfusion scan, technology to be scanned

Inactive Publication Date: 2014-11-12
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of unreasonable number of exposure scans in the existing perfusion scanning process, the present invention provides a perfusion scanning method and device

Method used

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  • CT (computed tomography) perfusion scanning method and CT perfusion scanning device
  • CT (computed tomography) perfusion scanning method and CT perfusion scanning device
  • CT (computed tomography) perfusion scanning method and CT perfusion scanning device

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Embodiment Construction

[0029] In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In order to solve the problem of unreasonable number of exposure scans in the existing perfusion scanning process, the present invention provides a new perfusion scanning method.

[0032] Such as figure 1 As shown, a perfusion scanning method includes the following steps:

[0033] Step S10, acquiring a positioning image including an area to be scanned;

[0034] As mentioned in the background technolo...

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Abstract

The invention provides a perfusion scanning method. The perfusion scanning method includes steps of acquiring positioning images of to-be-scanned regions; accurately positioning the to-be-scanned regions according to the positioning images; dividing different scanning time frames according to efflux absorption curves of contrast agents, and performing perfusion scanning on the to-be-scanned regions at different intervals in the corresponding different scanning time frames. The perfusion scanning method has the advantages that the long scanning intervals are set in gentle change periods of the efflux absorption curves of the contrast agents, accordingly, acquisition frequencies can be reduced, and X-ray absorption dose of patients can be reduced; the acquisition frequencies are reduced, but change in the periods is gentle, and accordingly real time-density curves in the periods can be acquired only by the aid of a few samples. The invention in the technical scheme further provides a CT (computed tomography) perfusion scanning device.

Description

【Technical field】 [0001] The invention relates to the field of CT scanning, in particular to a CT perfusion scanning method and device. 【Background technique】 [0002] At present, CT perfusion scanning is a commonly used enhanced scanning method. Generally, the CT value of the region of interest on a CT image at a certain level at different times is obtained based on the principle of nuclear medicine calculation of tracheal blood flow, the central volume theorem and the principle of intravascular contrast agent dilution. , so as to obtain the time-density curve, and use the perfusion software to process and obtain the perfusion value for diagnosis. [0003] In the existing perfusion scanning process, a fixed scan interval and number of scans are set before the scan. During the scan, the same sampling interval is scanned at the same position to obtain tomograms of the same anatomical part in different phases, such as The sampling interval of conventional perfusion scanning i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
Inventor 吴晓明孙洪雨钱春锋闫海滨
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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