Method for calculating cardiac cycle based on intravascular ultrasound image
An ultrasound image, cardiac cycle technology, applied in ultrasonic/sonic/infrasound diagnosis, sonic diagnosis, infrasound diagnosis, etc., can solve problems such as heart rate value or cardiac cycle matching
Active Publication Date: 2022-05-17
SHENZHEN INSIGHT MED CO LTD
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However, the directly estimated heart rate value or cardiac cycle is often difficult to match the actual heart rate value or cardiac cycle
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[0026] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the same reference numerals are given to the same components, and repeated descriptions are omitted. In addition, the drawings are only schematic diagrams, and the ratio of dimensions between components, the shape of components, and the like may be different from the actual ones.
[0027] In addition, subheadings and the like involved in the following description of the present disclosure are not intended to limit the content or scope of the present disclosure, but are merely used as a reminder for reading. Such subtitles can neither be understood as used to divide the content of the article, nor should the content under the subtitle be limited to the scope of the subtitle.
[0028] The system 10 (see figure 1 ) may measure, based on the ultrasound image, a cardiac cycle of the imaged subject at the time the ultrasound ...
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The invention relates to a method for calculating a cardiac cycle based on an intravascular ultrasound image, and the method comprises the steps: an obtaining module is used for obtaining a plurality of continuous ultrasound images and presetting a plurality of estimated heart rate values, and the ultrasound images are obtained in a blood vessel at a preset frequency; the selection module is configured to obtain a plurality of estimated periods based on each estimated heart rate value, respectively take each estimated period as a target period, divide the multiple frames of ultrasonic images into a plurality of image groups based on the target period and a predetermined frequency, and select images at corresponding positions in each image group to form a plurality of image sequences; the calculation module is configured to calculate the similarity of two adjacent frames of images in each image sequence and obtain a plurality of similarity values, calculate an average value of the plurality of similarity values as an effective similarity value corresponding to a target period, and compare the effective similarity values corresponding to each estimation period; and obtaining the cardiac cycle based on the estimated cycle corresponding to the maximum effective similarity value. Under the condition, the cardiac cycle can be accurately obtained.
Description
[0001] The application date of this application is December 31, 2020, the application number is 202011633487.9, and the title of the invention is a divisional application of a patent application for a system and method for measuring cardiac cycles using ultrasound images. technical field [0002] The present disclosure specifically relates to a method for calculating cardiac cycles based on intravascular ultrasound images. Background technique [0003] Cardiovascular disease has become the leading cause of death worldwide (eg, coronary heart disease). Currently, blood vessels are diagnosed and monitored by ultrasonic imaging of blood vessels through an ultrasound imaging system (such as an IVUS system). During ultrasound imaging, movement of tissues or organs (for example, respiration, heartbeat, etc.) may cause artifacts in the ultrasound imaging system, thereby degrading the quality of the acquired ultrasound image. [0004] In order to obtain higher-quality ultrasound im...
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IPC IPC(8): A61B8/02
CPCA61B8/02A61B8/5223
Inventor 任东
Owner SHENZHEN INSIGHT MED CO LTD