Positioning method and positioning device for cervical vertebral body axial lines and relevant tissues of MRI (magnetic resonance imaging) images

Abstract

The invention discloses a positioning method and a positioning device for cervical vertebral body axial lines and relevant tissues. The cervical vertebral body axial line is fast positioned through positioning the trachea line, in addition, the vertebral body is extracted in a self-adaptive way by utilizing the characteristics that the gray levels in the vertebral body are approximately uniform, in addition, the vertebral body has the obvious boundary with the intervertebral disc, and the shape and the size of the vertebral body are basically fixed. The extraction process is not influenced by the image weight, and the middle line position and the angle of each intervertebral disc are calculated according to the extracted vertebral body, so the scanning of the cervical intervertebral disc in an MRI (magnetic resonance imaging) system is effectively and automatically positioned. The invention also discloses a magnetic resonance system.

Description

technical field [0001] The invention relates to medical imaging equipment, in particular to a method and device for automatic positioning of cervical intervertebral discs by using magnetic resonance images, and a magnetic resonance imaging system. Background technique [0002] Magnetic Resonance Imaging (MRI, Magnetic Resonance Imaging) has been widely used clinically due to the advantages of non-invasive and multi-parameter imaging, especially its ability of arbitrary tomographic imaging, which can directly observe and analyze tissue structure and its lesions from different angles , so it has outstanding advantages in the serial examination of the spine. A typical MRI examination process of cervical intervertebral disc often requires physicians to manually place each group of scanning lines on the intervertebral disc with disease on the sagittal plane positioning image. In order to ensure that the thread group passes through the center of the intervertebral disc, it is nec...

AI Technical Summary

Problems solved by technology

However, this segmentation method is often time-consuming and not very effective, because the gray value of the intervertebral disc will change in images with different weights of MRI. Recovery, short T1 inversion recovery) weight image is white

In addition, there are some methods that use deformable model matching to extract the vertebral body and then locate the intervertebral disc. 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.

Some segmentation methods require doctors to perform certain interactive operations, such as selecting feature points, which will reduce the efficiency of inspection

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