Neurosurgical navigation method and system based on augmented reality technology

Abstract

The invention provides a neurosurgical navigation method and system based on an augmented reality technology. The method comprises the step S1 of preoperative preparation: introducing preoperative medical images of a patient, fusing images of multiple modes and formulating a surgical plan; the step S2 of automatic rectification: determining a world coordinate system and solving the spatial transformation relationship between an image coordinate system and a world coordinate system; the step S3 of tracking guidance: mapping the surgical plan in the image space to the world coordinate system, superimposing and displaying the surgical plan in the head of the patient observed by augmented reality glasses according to the real-time pose of the augmented reality glasses relative to the world coordinate system and keeping the surgical plan remaining in the same position as the head of the patient when the augmented reality glasses move. The system includes the augmented reality glasses and aworkstation. According to the method and system, no spatial positioning device or tracker is required, so that the system does not occupy the operating room space. A surgical instrument is directly tracked through the augmented reality glasses to avoid the optical occlusion between the spatial positioning device and the tracker. A doctor does not need to switch the sight between a display and thepatient. The system is easy to operate by means of the automatic rectification.

Description

Technical field [0001] The present invention relates to the technical field of computer-assisted medical treatment, in particular to a neurosurgery navigation method and system based on augmented reality technology. Background technique [0002] Before neurosurgery, doctors make surgical plans in medical images such as computed tomography (CT) or magnetic resonance imaging (MRI) of the patient. During the operation, after the surgical navigation system is used to register the medical image space with the real patient space, the position of the surgical instrument in the patient space is mapped to the medical image space, and the position of the surgical instrument is tracked in real time, and the surgical instrument is displayed in the medical image . The doctor can see the real-time position of the surgical instrument relative to the patient's internal structure on the display of the surgical navigation system, thereby guiding the doctor to accurately perform the operation acco...

AI Technical Summary

Problems solved by technology

However, these surgical navigation systems in the prior art still need an optical spatial positioning device, and by fixing the tracker on the added display device to locate the spatial position of the display device, the complexity of the surgical navigation system device is increased.

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