Automatic visual location device and automatic visual location method for head marks of patient in stereotactic neurosurgery

Abstract

The invention discloses an automatic visual location device and an automatic visual location method for head marks of a patient in stereotactic neurosurgery. The method comprises the following steps of: designing a mark template; pasting marks on the head of the patient by using a specific method; acquiring pixel coordinates of mark centers of single-frame left and right eye images in video by using an image processing and pattern recognition method, and reconstructing the pixel coordinates into spatial coordinates by using a computer vision method; and tracking to acquire pixel coordinates of a mark center of a video sequence by using the image processing and pattern recognition method, and reconstructing the pixel coordinates into spatial coordinates by using the computer vision method. In the invention, the traditional method of manually selecting mark centers in the neurosurgery is changed, the automation of the location of the mark centers is realized, operation steps are simplified, and operation time is shortened; location results are more accurate; and the reliability of the operation is improved. The automatic visual location device and the automatic visual location method can be promoted and applied, and solve the problem of the location and tracking of the mark centers in surgeries such as bone surgeries and the like.

Description

technical field [0001] The invention relates to the problem of registration of a patient's head in neurosurgery, in particular to an automatic visual positioning device and a positioning method for marking a patient's head in stereotactic neurosurgery, belonging to the field of image processing. Background technique [0002] A key technology in stereotaxic neurosurgery is the registration of the patient's head, that is, to obtain the corresponding relationship between the medical image space and the surgical equipment space. The medical image space refers to the patient's brain space reconstructed with CT or MRI tomographic images, which contains important information inside the patient's brain; the surgical equipment space refers to the space where medical robots or other medical equipment are located. Only by realizing the registration of the patient's head can the surgical equipment accurately locate the position of the patient's brain and successfully complete the operat...

AI Technical Summary

Problems solved by technology

This method requires more human-computer interaction, is cumbersome, and it is difficult to track the markers. At the same time, the positioning accuracy of the markers determined by manual methods is not high, and can only achieve pixel-level accuracy.

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