Method for positioning included angle between transverse sinus and sinus sigmoideus

Abstract

The invention relates to an included angle between transverse sinus and sinus sigmoideus, which comprises the following steps of: (1) scanning a skull thin layer of a patient to obtain data; (2) importing the data into software to obtain a 3D image; (3) finding an included angle position of a transverse sinus and a sigmoid sinus on the inner side surface of the skull, and carrying out small hole positioning by utilizing a software tool; (4) adjusting the image to obtain images of the brain and skin muscles; (5) connecting the midpoint of the zygomatic arch and the midpoint of the external auditory canal and lengthening; (6) drawing a vertical line from the small hole as an original point to the extension lines of the midpoint of the zygomatic arch and the midpoint of the external auditory canal, and intersecting, wherein the intersection point is a point C; (7) respectively connecting the small hole with the midpoint of the zygomatic arch and the midpoint of the external auditory canal; and (8) measuring each included angle between transverse sinus and sinus sigmoideus by using software, and performing resection operation on the tumor. According to the method, the sinus sigmoideus-transverse sinus angle can be accurately positioned, the craniotomy speed and tumor excision efficiency of the bridge cerebellar horn tumor are remarkably improved, and technical support is provided for bridge cerebellar horn tumor excision.

Description

technical field [0001] The invention relates to the technical field of tumor resection, in particular to a method for locating the angle between the transverse sinus and the sigmoid sinus. Background technique [0002] The success of neurosurgical craniotomies depends primarily on the accurate determination of the surface projections of deep intracranial structures. This is especially relevant for posterolateral skull base approaches. Neurosurgeons all know that the transverse sinus and sigmoid sinus are the boundaries of the posterolateral craniotomy, and the intersection angle of the transverse sinus and the sigmoid sinus must be exposed, and the dura cut should be as close as possible to the transverse and sigmoid sinus. The suboccipital retrosigmoid approach is one of the most commonly used surgical approaches in neurosurgery. When performing a suboccipital retrosigmoid craniotomy, the first burr hole is optimal if it exposes the transverse-sigmoid angle. Before the o...

AI Technical Summary

Problems solved by technology

[0003] Usually, we mainly determine the position of the venous sinus through the star point, external occipital protuberance, parietal suture, etc. However, due to differences between individuals, errors often occur, and during the operation, there will also be identification of skull landmarks. errors, which will affect the process and accuracy of the operation

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