Registration method and system of neurosurgery navigation

A surgical navigation and neurosurgery technology, applied in the field of medical image processing and application, can solve problems such as insufficient registration accuracy, and achieve the effects of reducing registration time, time cost, and simplifying registration process.

Active Publication Date: 2015-03-25
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In view of this, the purpose of the embodiments of the present invention is to provide a registration method and system for neurosurgery navigation, which aims to solve the problem of insufficient registration accuracy of the registration method and system for neurosurgery navigation in the prior art

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[0065] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] The specific embodiment of the present invention provides a registration method for neurosurgery navigation, which mainly includes the following steps:

[0067] S11. Perform CT / MR scan on the patient's head to obtain a preoperative image, and segment the preoperative image;

[0068] S12. Extracting two midlines of the head surface according to the segmented preoperative image;

[0069] S13. Extracting and simplifying the surface of the segmented preoperative image;

[0070] S14. Obtain and simplify the two midlines on the patient's head surface during the operation by using the method of d...

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Abstract

The invention belongs to the medicine field, and provides a registration method of neurosurgery navigation. The method includes the steps that CT/MR scanning is performed on the head of a patient to obtain a pre-operation image, and the pre-operation image is divided; according to a divided pre-operation image, two central lines of the surface of the head are extracted; the surface of the divided pre-operation image is extracted and simplified; in an operation, a probe lineation point getting mode is utilized for obtaining and simplifying the two center lines of the surface of the head of the patient; through a Gaussian mixing model method is used for registering a pre-operation point set with a point set in the operation; in the operation, a probe is used for performing irregular lineation point getting and simplification on the head of the patient; on the basis of initial registration, through a preset algorithm, a point set of the forehead in the operation is registered with the pre-operation surface, so that final spatial alternation parameters are obtained. The invention further provides a registration system of neurosurgery navigation. The registration method and system of the neurosurgery navigation can effectively improve registration precision.

Description

technical field [0001] The invention relates to the technical field of medical image processing and application, in particular to a registration method and system for neurosurgery navigation. Background technique [0002] For neurosurgery, physicians usually identify lesions or functional areas empirically, making it difficult for less experienced physicians to perform such procedures. With the emergence of computer-aided diagnosis, especially the implementation of the neurosurgery navigation system, doctors can observe the position of surgical instruments relative to the lesion from the patient's preoperative image during the operation, so that the lesion or functional area can be quickly and accurately determined , greatly enhancing the reproducibility of the operation. [0003] The key technology of the neurosurgery navigation system is to map the intraoperative surgical instruments to the preoperative patient image space, that is, to solve the transformation relationshi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0012G06T2207/10081G06T2207/30016
Inventor 肖德强贾富仓罗火灵周寿军胡庆茂
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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