Calcification score calculation method and device based on energy spectrum CT

A score and energy spectrum technology, which is applied in calculation, equipment for radiological diagnosis, image analysis, etc., can solve problems such as difficult to distinguish and calculate calcium scores, and achieve the effect of ensuring accuracy and high accuracy

Pending Publication Date: 2021-08-27
NANJING DRUM TOWER HOSPITAL
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Problems solved by technology

However, after the injection of contrast agent, the blood vessels in CTA have the same high brightness as the calcified area, making it difficult to distinguish between the two, so it is difficult to calculate the calcium score in CTA

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  • Calcification score calculation method and device based on energy spectrum CT
  • Calcification score calculation method and device based on energy spectrum CT
  • Calcification score calculation method and device based on energy spectrum CT

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Embodiment Construction

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] The invention discloses a CTA-based calcification score calculation device, such as figure 1 As shown, the device includes a calcification area detection module and a calcification integral regression module, the calcification area detection module and the calcification integral regression module are provided separately and run simultaneously.

[0029] The invention discloses a calculation method of calcification fraction based on energy spectrum CT, and the method comprises the following steps:

[0030] 1) Use the deep neural network model in the calcification area detection module to determine the position correlation between the calcification area and the ca...

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Abstract

The invention discloses a calcification score calculation method based on energy spectrum CT. The calcification score calculation method comprises the following steps: 1) a deep neural network model in a calcification region detection module determining position correlation between a calcification region and a cardiovascular system; 2) accurately positioning and segmenting the calcification region through a deep neural network module in the calcification region detection module; and 3) carrying out regression/calculation on a calcification area detection result of the calcification region detection module through a calcification integral regression module, calculating the score of each calcification position, training the output of the calcification position by using a gold standard in a training period, detecting a related calcium region by the trained calcification area detection module in a prediction process, and providing a corresponding probability/feature map to a score regression module so as to calculate the calcium score. According to the invention, the related calcification region and other regions around target blood vessels can be automatically distinguished, so that the work of manually identifying each related calcium region is eliminated.

Description

technical field [0001] The invention relates to the technical field of calcification area detection, in particular to a method and device for calculating calcification fraction based on energy spectrum CT. Background technique [0002] Calcification score is a quantitative method to assess the degree of development of calcified plaque around blood vessels. There are many evaluation methods of calcification score in clinical practice, including Agatston score, volume score, and mass score, among which Agatston score is the most widely used as an effective plaque burden and cardiovascular disease risk assessment index. [0003] In traditional assessment methods, the Agatston scoring process is based on independent unenhanced CT images. Observers need to manually select voxels around blood vessels that are brighter than a predetermined threshold (>130 HU) as calcified voxels, and then calculate the calcium score based on the brightness and area of ​​the calcium region accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/62G06T7/73G06T7/90A61B6/00A61B6/03
CPCA61B6/032A61B6/504A61B6/5217G06T7/0012G06T2207/10081G06T2207/20081G06T2207/20084G06T2207/30101G06T7/11G06T7/136G06T7/62G06T7/73G06T7/90
Inventor 牡丹张冰余鸿鸣梁静陈文萍李辉尹克杰王慧婷
Owner NANJING DRUM TOWER HOSPITAL
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