Three-dimensional visualized scalp craniotomy positioning method combined with optical surgery navigation

Abstract

The invention discloses a three-dimensional visualized scalp craniotomy positioning method combined with optical surgery navigation, and the positioning method comprises the steps: 1), introducing a CT image sequence of a patient's brain to perform segmentation, obtaining two-dimensional image data of an intracranial lesion and the scalp; 2), performing three-dimensional reconstruction according to the two-dimensional images of the lesion and the scalp, and performing rendering into a three-dimensional model in a virtual space, and performing the orthogonal mapping of the lesion model to the scalp to design an adaptive craniotomy contour; 3), combining an optical surgical navigator to complete the registration of a surgical tool and the patient's space and the virtual space, tracking the surgical tool in real time, and drawing the actual craniotomy contour on a real skull scalp along the virtual craniotomy contour; 4) recording and displaying a movement path of the tip of the surgicaltool through employing a virtualization method; 5), solving the distance between the actual contour and the designed contour in the virtual space to assess the accuracy of craniotomy. The method provides a reference for a doctor to draw a contour, and breaks through the shortcomings of the traditional method that the naked eye is closely focused on the lesion to design the craniotomy contour.

Description

technical field [0001] The invention relates to the technical field of medical image processing and surgical application, in particular to a three-dimensional visual scalp craniotomy positioning method combined with optical surgical navigation. Background technique [0002] Craniocerebral surgery has the characteristics of high risk and high difficulty. Locating the craniotomy incision according to the location of the lesion is an important step in craniotomy. The accuracy of positioning will directly affect the quality of the operation and the postoperative recovery of the patient. Neurosurgeons usually use tumor information displayed by CT, MRI and other medical images, and rely on clinical experience to design craniotomy incisions and then remove lesions. During preoperative planning, it is difficult to precisely locate the tumor based on two-dimensional image data, which often results in a too large incision design or inaccurate positioning, which may lead to the need to...

AI Technical Summary

Problems solved by technology

However, observing the outline of the lesion from a single three-dimensional perspective will lead to a large angle between the surgical tool and the scalp, and it is easy to cause inaccurate incision design due to improper operation; at the same time, the mainstream surgical navigation system does not provide feedback on the contouring process. Therefore, it is not possible to correct the sketching results

In addition, there is currently no standardized set of contour delineation evaluation methods to quantify the results of the incision design

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