Blood flow speed calculation method based on X-ray coronary angiogram images

A technology of contrast image and blood flow, which is applied in the field of medical image processing, can solve problems such as inability to accurately reflect blood flow velocity, and achieve the effect of simple operation and accurate calculation method

Inactive Publication Date: 2018-07-06
SUZHOU RAINMED MEDICAL TECH CO LTD
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  • Application Information

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Problems solved by technology

An obvious disadvantage of this method is that in the selected length, the cardiac cycle is indeterminate, and the blood flow velocity is always changing during the heartbeat process. This method cannot accurately reflect the blood flow velocity within a cardiac cycle. , with certain limitations

Method used

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  • Blood flow speed calculation method based on X-ray coronary angiogram images
  • Blood flow speed calculation method based on X-ray coronary angiogram images
  • Blood flow speed calculation method based on X-ray coronary angiogram images

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Effect test

Embodiment 1

[0038] Embodiment 1: refer to figure 2 As shown, the acquisition start frame is frame 11, and the end frame is determined to be frame 20. The start point and end point of a cardiac cycle were respectively obtained on the two images corresponding to the two-dimensional start frame and the end frame. The corresponding length obtained from the three-dimensional centerline data was 39 mm, and the final flow velocity was 65 mm / s.

Embodiment 2

[0039] Embodiment 2: refer to image 3 As shown, the acquisition start frame is frame 12, and the end frame is determined to be frame 21. The start point and end point of a cardiac cycle were respectively obtained on the two images corresponding to the two-dimensional start frame and the end frame. The corresponding length obtained from the three-dimensional centerline data was 38.3442 mm, and the final flow velocity was 64 mm / s.

Embodiment 3

[0040] Embodiment 3: refer to Figure 4 As shown, the acquisition start frame is frame 13, and the end frame is determined to be frame 22. The start point and end point of a cardiac cycle were respectively obtained on the two images corresponding to the two-dimensional start frame and the end frame. The corresponding length obtained from the three-dimensional centerline data was 38.5965 mm, and the final flow velocity was 64 mm / s.

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Abstract

The invention discloses a blood flow speed calculation method based on X-ray coronary angiogram images. The method includes the following steps that the X-ray coronary angiogram images are loaded; theheart rate of a patient is acquired; angiogram image information is extracted, and three-dimensional synthesis data of a two-dimensional blood vessel is acquired based on a three-dimensional synthesis method; the number of frames through which the images walk in one cardiac cycle is calculated; the initial point and the end point of one cardiac cycle are acquired respectively on images corresponding to a two-dimensional initial frame and a two-dimensional end frame, and then the blood vessel length of one cardiac cycle is cut out in the three-dimensional synthesis data through the initial point and the end point; the blood flow speed is calculated. The method has the advantages that by recognizing the initial point and the end point on the images corresponding to the initial frame and theend frame in one cardiac cycle, based on the blood vessel length acquired through three-dimensional reconstruction, the average flow speed of blood in one cardiac cycle is determined, and the more accurate coronary blood flow speed calculation method is provided for doctors.

Description

technical field [0001] The invention belongs to the technical field of medical image processing, in particular to a method for calculating blood flow velocity based on X-ray coronary angiography images. Background technique [0002] The blood flow velocity in blood vessels is an important parameter and indicator of human health, which can reflect the intermediate links or early signs of many diseases. Therefore, accurately measuring the blood flow velocity in blood vessels can help doctors to better analyze the condition, which has important clinical value and significance. [0003] With the development of technology, X-ray contrast images are becoming clearer and clearer, and blood vessel structures can be clearly seen with contrast agents. The current conventional image measurement method of blood flow velocity is to select a section of blood vessel, measure the length of the blood vessel and determine the time by the number of image frames, so as to obtain the blood flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00
CPCA61B6/481A61B6/507A61B6/5217
Inventor 霍云飞徐磊吴星云霍勇龚艳君李建平易铁慈杨帆
Owner SUZHOU RAINMED MEDICAL TECH CO LTD
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