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Method for measuring three-dimensional morphological parameters of blood vessel in ICUS image sequence

An image sequence and parameter measurement technology, which is applied in image data processing, ultrasonic/acoustic/infrasonic image/data processing, image analysis, etc., can solve the problems of not considering the bending and twisting of blood vessels, inaccurate results, and inability to guarantee accuracy, etc.

Inactive Publication Date: 2011-01-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

Traditional three-dimensional reconstruction of blood vessels in ICUS image sequences (P.Schoenhagen. 3D Intravascular ultrasound (IVUS) and IVUS-Palpography: insights into the mechanica] behavior of the coronary vessel wall. The International Journal of Cardiovascular Imaging. 2006, vol. 22, pp.153-155) is to superimpose a series of intravascular ultrasound images in the order of acquisition to form a three-dimensional straight vessel segment, completely ignoring the bending and twisting of the vessel itself and the distortion caused by the catheter during withdrawal Image rotation, and motion artifacts due to heart motion and pulsatile blood flow, the results of such methods are inaccurate, and the accuracy of quantitative measurements based on them cannot be guaranteed

Method used

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  • Method for measuring three-dimensional morphological parameters of blood vessel in ICUS image sequence

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Embodiment Construction

[0036] as attached figure 1 Shown, the step of the inventive method comprises:

[0037] (1) Preprocessing the original X-ray coronary angiography image and ICUS image:

[0038] For a pair of X-ray coronary angiography images acquired at the starting point of the retraction path of the ultrasound catheter, the Top-Hat transformation is first applied to eliminate the noise of large tissue structures in the image, and then the rotated one-dimensional Gaussian template is used Method (Xu Zhi, Xie Hongbo, Chen Xiaodong, et al. Detection of vessel boundary in coronary angiogram. Proceedings of SPIE International Conference on Electronic Imaging and Multimedia Technology III.2002, vol.4925, pp.558-562) to image Template matching is enhanced to remove noise with smaller sizes.

[0039] For the ICUS image sequence, the snake model (M.Kass, A.Witkin, D.Terzopoulos. Snakes: active contour models. International Journal of Computer Vision.1987, vol.1, no.4, pp.321-331) method is used Th...

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Abstract

The invention relates to a method for measuring three-dimensional morphological parameters of a blood vessel in an intracoronary ultrasound (ICUS) image sequence, which is used for improving the measurement accuracy of the morphological parameters of the blood vessel of a coronary artery. The technical scheme comprises the following steps of: completing three-dimensional reconstruction of the blood vessel by using the ICUS image sequence which is obtained by continuously withdrawing an ultrasound catheter and covers a plurality of cardiac cycles and cross information between two approximately vertical X-ray coronary arteriography images which are acquired at a starting point of a withdrawing path of the ultrasound catheter; and measuring and calculating the morphological parameters of the blood vessel which are important to clinical medicine by a geometric method by using a three-dimensional blood vessel model. Experiments prove that the measurement result of the morphological parameters of the blood vessel by the method is more accurate than that of the prior art, so that a reliable basis for visual diagnosis and treatment of coronary heart diseases and evaluation of interventional therapy effect is provided.

Description

technical field [0001] The invention relates to a method for quantitatively measuring three-dimensional morphological and structural parameters of coronary vessels according to an intracoronary ultrasound (Intracoronary Ultrasound, ICUS) image sequence obtained by continuously withdrawing an ultrasonic catheter and covering multiple cardiac cycles, and belongs to the field of health care technology. Background technique [0002] X-ray coronary angiography and intracoronary ultrasonography (Intracoronary Ultrasound, ICUS) are interventional imaging methods commonly used clinically to diagnose coronary artery lesions. Objectively and accurately measuring the morphological and structural parameters of coronary arteries and possible lesions (including atherosclerotic plaques and stenosis) is the key to the diagnosis of coronary heart disease and an important basis for making interventional treatment plans. In the traditional diagnosis process, doctors need to use anatomy, pathol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/12A61B8/08G06T17/00G06T7/00G06T7/62G06T7/66
Inventor 孙正康元元郭晓帅丁伟荣田美影
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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