Method and device for correcting blood flow velocity and microcirculation parameters based on contrast images
A technology of blood flow velocity and contrast image, applied in the field of computer storage medium to reduce the effect of influence
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Embodiment 1
[0075] In order to solve the problem that the flow rate of each angiography will be affected by whether the last angiography returns to the baseline state, such as figure 1 As shown, the present application provides a method for correcting blood flow velocity based on contrast images, including:
[0076] S100, in the angiography state, obtain the average blood flow velocity V from the entrance of the coronary artery to the distal end of the coronary artery stenosis h ;
[0077] S200, acquiring the difference Δt between the start times of two adjacent injections of the contrast agent;
[0078] S300, obtaining a correction coefficient K according to the time difference Δt;
[0079] S400, according to the correction coefficient K and the blood flow velocity V h , to obtain the resting state blood flow velocity V j , the specific formula is V j =V h / K.
[0080] In an embodiment of the present application, Δt is divided into 4 situations that affect K, specifically:
[008...
Embodiment 2
[0093] like figure 2 As shown, the present application provides a method for correcting the maximum diastolic blood flow velocity based on contrast images, including:
[0094] The above-mentioned method for correcting blood flow velocity in a resting state based on contrast images;
[0095] S500, according to the resting state blood flow velocity V j Obtain the maximum dilated blood flow velocity, including: According to the formula V max =aV j +b; where, V max Represents the maximum dilated blood flow velocity, a represents a constant with a value ranging from 1 to 3, and b represents a constant with a value ranging from 50 to 300.
[0096] Example 2:
[0097] like figure 2 As shown, the application provides a method for correcting coronary microcirculation blood vessel assessment parameters based on contrast images, including:
[0098] S001, according to the angiography image, obtain the average value P of the coronary artery inlet pressure in the heartbeat cycle ar...
Embodiment 6
[0122] like Figure 19 As shown, the present application provides a device for correcting blood flow velocity based on contrast images, including: a first blood flow velocity unit 100, a time difference unit 200, a correction coefficient unit 400, and a second blood flow velocity unit 500; The velocity unit 100 is connected to the second blood flow velocity unit 500, and the correction coefficient unit 400 is respectively connected to the time difference unit 200 and the second blood flow velocity unit 500; the first blood flow velocity unit 100 is used to acquire coronary artery entrance The average blood flow velocity V to the distal end of coronary stenosis h The time difference unit 200 is used to obtain the difference Δt between the start times of two adjacent injections of the contrast agent; the correction coefficient unit 400 is used to receive the time difference Δt transmitted by the time difference unit 200 to obtain the correction coefficient K; the second blood fl...
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Abstract
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