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Automatic heart four-cavity heart positioning method based on template matching

A template matching and automatic positioning technology, applied in character and pattern recognition, image analysis, instruments, etc., can solve the problems of time-consuming, complicated process, inconsistent results of different operators, etc., and achieve simple production process and good robustness Effect

Pending Publication Date: 2022-07-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complicated and time-consuming, even for a professionally trained doctor, it takes about 3 minutes to complete the entire scan
And when performing heart positioning on the same patient, the results of different operators may be inconsistent, and even the results of multiple positioning by the same operator may be different

Method used

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  • Automatic heart four-cavity heart positioning method based on template matching
  • Automatic heart four-cavity heart positioning method based on template matching
  • Automatic heart four-cavity heart positioning method based on template matching

Examples

Experimental program
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Embodiment

[0044] Example: see figure 2 , the present invention provides a four-chamber cardiac automatic positioning method based on template matching, the specific steps are as follows:

[0045] The specific steps are divided into two parts: template making and template matching.

[0046] Step 1 The specific steps of template making are as follows figure 2 (a) shows:

[0047] Step 11, scan the thoracic transverse MR sequence;

[0048] Step 12, segment the heart region;

[0049] Step 13, the three-dimensional construction of the cardiac image. Set the pixel value of the non-cardiac area in the image to 0, superimpose the image sequence, use linear interpolation to resample the image, convert the voxel Spacing to (1,1,1), and then perform Gaussian filtering to remove the noise in the image;

[0050] Step 14: Manually mark the plane position of the four-chamber center (the plane parameter is ax+by+cz+d=0), and record the plane parameters.

[0051] Step 2: The specific steps of templ...

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Abstract

The invention discloses a heart four-cavity heart automatic positioning method based on template matching. According to the method, a three-dimensional heart template needs to be manufactured in advance, and the four-cavity center plane position of the heart template is manually positioned. When four-cavity heart positions of other hearts are positioned, the heart template is registered with a three-dimensional thoracic cavity image, a four-cavity heart plane equation of the heart template is mapped according to a transformation matrix obtained through registration, dicom scanning surface parameters are obtained through calculation, and finally scanning of the four-cavity heart plane of the heart is completed. The method is an end-to-end method, the workload of doctors can be greatly reduced, and meanwhile, experimental results show that the method has good heart positioning accuracy.

Description

technical field [0001] The invention relates to a four-chamber heart automatic positioning method based on template matching, and belongs to the field of computer image processing. Background technique [0002] Magnetic resonance imaging cardiac scans have three basic scan planes: two-chamber, four-chamber, and short-axis. The two-chamber plane reflects the left ventricle and left atrium, the four-chamber plane reflects the left and right ventricles and the left and right atrium, and the short-axis plane reflects the cross-section of the left and right ventricles. Taking the line connecting the midpoint of the mitral valve and the apex of the left ventricle as the axis, the sagittal, coronal, and cross-sectional scans of the heart were performed, and the scan planes obtained were the two-chamber, four-chamber, and short-axis views. [0003] After cardiac positioning is completed, patients can perform follow-up examinations, such as: measuring ejection fraction, ventricular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/55G06T3/40G06T7/30G06T7/66G06T7/70G06V10/75
CPCG06T7/55G06T3/4007G06T7/30G06T7/66G06T7/70G06V10/752G06T2207/10088G06T2207/20081G06T2207/30048
Inventor 陈阳陈瑞峰孙良启
Owner SOUTHEAST UNIV