Spinal vertebral body and intervertebral disc segmentation method, device, magnetic resonance imaging system

Abstract

The invention discloses a spinal vertebral body extraction method, an intervertebral disc segmentation method and a device thereof. Magnetic resonance image data is used to locate the spinal cord line, then the vertebral body axis section is determined according to the spinal cord line, and the seed point inside the vertebral body is located according to the vertebral body axis section. , and then extract the vertebral body region based on the seed points inside the vertebral body using the seed region growing method. The present invention is not affected by the inconsistency of gray levels of vertebral bodies or intervertebral discs, nor is it affected by image weights. The invention also discloses a magnetic resonance system.

Description

technical field [0001] The invention relates to a magnetic resonance imaging device, in particular to a method and a device for segmenting spinal vertebral bodies and intervertebral discs by using magnetic resonance images. Background technique [0002] MRI (Magnetic resonance imaging, Magnetic Resonance Imaging) is increasingly popular due to its non-invasive, arbitrary cross-section and multi-parameter imaging characteristics, especially in the clinical application of the central nervous system and spine. The typical MRI spinal disc scanning process is described as follows: the physician or technician places each group of scanning lines on the diseased intervertebral disc on the sagittal plane positioning image. To ensure that the line group passes through the center of the intervertebral disc, it is necessary to repeatedly adjust the line group The position and angle, wire group placement and adjustment process is tedious and time consuming. Therefore, if the automatic e...

AI Technical Summary

Problems solved by technology

If the traditional image segmentation method is used to segment the intervertebral disc, the difference in gray level between the intervertebral disc and the vertebral body must be used. For example, on the T1 weighted image, the vertebral body appears white and the intervertebral disc appears black. However, this feature is not absolute. Due to different weights The gray difference between the vertebral body and the intervertebral disc is often not obvious, and even a reversed intervertebral disc appears on the T2 weighted or STIR weighted image, so that the traditional method is difficult to fully apply

Of course, there is a method of matching deformable models for the extraction of vertebral bodies. The problem with this method is that the number of visible vertebral bodies in the spine image is not necessarily the same. If there are too many or too few visible vertebral bodies, the matching will fail.

There are also segmentation methods that require doctors or technicians to perform certain interactive operations, such as selecting feature points, etc., which also affects the efficiency.

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