A method for extracting centrosagittal plane

Abstract

The present invention provides a method for extracting the central sagittal plane, comprising: providing medical images and a sagittal plane equation, the sagittal plane equation includes undetermined coefficients, and iterating the coefficients through a gradient descent method to determine the central sagittal plane equation; wherein For any one of the iterations, it includes: obtaining the current coefficient, dividing the medical image into two parts through the current sagittal plane corresponding to the current coefficient, obtaining the mean square error measurement function and the mean square error of the gray levels of the two parts The partial derivative of the measure function with respect to the coefficients to iterate over the coefficients. The present invention uses the gradient descent method suitable for solving nonlinearity to iterate the cost function, that is, the mean square error measurement function, and uses the sagittal plane corresponding to the coefficient at the end of the iteration as the central sagittal plane to improve the accuracy of central sagittal plane extraction Spend.

Description

technical field [0001] The invention relates to a method for processing medical scanning images, in particular to a method for extracting a central sagittal plane. Background technique [0002] The mid-sagittal plane (MSP) is a plane often used in the field of medical image processing, which is a vertical plane passing through the abdomen and back of the body. The body is divided into symmetrical left and right parts by the centrosagittal plane. Extracting the center sagittal plane of the first scanned 3D medical image is a prerequisite for determining the direction of the second scan. [0003] Document 1: Babak A. Ardekani, etc, 'Automatic Detection of the Mid-Sagittal Plane in 3-D Brain Images', IEEE transactions on medical imaging, vol., 16, N). 6, December 1997 provided the central sagittal plane extraction method , using the simplex descent method to optimize and solve the central sagittal plane equation MSP of the 3D head image, and the cost function is selected as t...

AI Technical Summary

Problems solved by technology

In terms of implementation, experts are required to detect the central sagittal plane. If the MSP of different patients is scanned for the first time, manual detection is required, and the operation will be very troublesome.

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