Method for generating CT angiography based on plain-scan CT

A technology of vascular imaging and CT images, which is applied in the field of medical image processing, can solve problems such as contrast agent allergy or related adverse events, and the inability to perform the inspection, so as to avoid allergic reactions or nephrotoxicity, and reduce costs and difficulties.

Pending Publication Date: 2022-05-13
THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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Problems solved by technology

At present, CTA method is usually used clinically. However, due to the need for injection of contrast medium, there is a possibility of contrast medium allergy or related adverse events. At the same time, due to the nephrotoxicity of contrast medium, this examination cannot be performed for patients with impaired renal function. , In addition, the current CTA technolo

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  • Method for generating CT angiography based on plain-scan CT
  • Method for generating CT angiography based on plain-scan CT
  • Method for generating CT angiography based on plain-scan CT

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[0024] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with examples of implementation. It should be understood that the examples of implementation described here are only for illustration and explanation of the present invention, and are not intended to limit the present invention.

[0025] A method for generating CT angiography based on unenhanced CT, comprising the following steps:

[0026] Step 1, obtain plain scan CT images and CTA images corresponding to slices.

[0027] Plain scan CT images and corresponding CTA images can be obtained in the following ways:

[0028] Step 1.1: Use a CT machine (such as GE Revolution) to collect plain CT images and corresponding CTA images of N volunteers. The plain CT images and CTA images are paired, with one-to-one correspondence between the slices and the same structure. This embodiment takes abdomi

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Abstract

The invention discloses a method for generating CT angiography based on plain-scan CT. The method comprises the following steps: acquiring a plain-scan CT image and a CTA image corresponding to a layer; constructing a deep learning model for generating a CTA image from the plain-scan CT image; and a loss function of the deep learning model is defined, a back propagation and gradient descent algorithm is adopted, a model parameter enabling the loss function to be minimum is searched, and the trained deep learning model is obtained. According to the method, the defects of current CTA contrast agent injection can be overcome, anaphylactic reaction or renal toxicity possibly caused by contrast agent injection is avoided, the cost and difficulty of CTA are greatly reduced, and the method is suitable for various medical scenes and has very high clinical application value.

Description

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Claims

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Application Information

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Owner THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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