Framed stereo directed neurosurgery system registration method

A neurosurgery and surgical system technology, applied in the registration field of neurosurgical navigation systems, can solve the problems of unsurpassed accuracy and unimproved accuracy.

Inactive Publication Date: 2006-05-24
JIAXING NO 1 HOSPITAL
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AI Technical Summary

Problems solved by technology

These devices and the corresponding software design make the total cost of the system far exceed the traditional mechanical stereotactic surgery system, but its accuracy has not improved
Even state-of-the-art neurosurgical navigation systems cannot outperform traditional stereotaxic instruments in accuracy

Method used

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  • Framed stereo directed neurosurgery system registration method

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Embodiment Construction

[0008] Such as figure 1 As shown, the framed stereotaxic neurosurgery system registration method includes the following steps (1), converting the spherical coordinates of the body surface marker points measured by the probe into the stereotaxic instrument Cartesian coordinates of the body surface marker points. Set up the cartesian coordinates of the stereotaxic instrument as x0, y0, z0, and determine the puncture path through the line connecting the marked points on the body surface to the target point. The included angle between the projection line of this path on the sagittal plane and the coronal plane is α, the angle between the path and the sagittal plane, that is, the inclination angle of the carriage is β, and the value rule is α: the arch forward tilts to take a positive value, and the backward tilt takes a negative value; β: the carriage tilts to the left and takes a positive value, To the right, take a negative value; the distance between the body surface marker poi...

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Abstract

The present invention relates to a frame-contained stereotaxic neurosurgical operation system registration method. Said method utilizes the principle of that the distance between landmark points of body surface and the distance between skull interior any point and landmark point of body surface can remain unchanged in different systems of coordinates to calculate the distance between all the landmark points of body surface in the coordinate system of the stereotaxic instrument and the distance in CT or MRI coordinate system, compare both them and make registration so as to implement the registration of stereotaxic instrument coordinate system and CT or MRI coordinate system. Said invention also provides its application in neurosurgical operation.

Description

technical field [0001] The invention relates to a registration method of a neurosurgical navigation system using a traditional stereotaxic instrument, and is especially suitable for a hybrid stereotaxic system combining a rectangular coordinate system and a spherical coordinate system. Background technique [0002] The traditional stereotaxic neurosurgery technology uses a mechanical stereotaxic instrument, which has very high positioning accuracy (mechanical accuracy <1mm), but the operation process is cumbersome. It is necessary to install the directional instrument frame on the patient's head first, and then perform CT or CT scans. An MRI scan before surgery can be performed. If the frame is not installed properly, it may interfere with anesthetic intubation or prevent surgical procedures. If the frame position is readjusted, the scan must be repositioned. [0003] Neurosurgery navigation system (also known as: frameless stereotaxic neurosurgery system) is further de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B34/20A61B90/10G06F19/00G06Q99/00
Inventor 刘凤强
Owner JIAXING NO 1 HOSPITAL
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