Implementation method for stereotactic electroencephalogram based on Leksell framework

Abstract

The invention relates to an implementation method for a stereotactic electroencephalogram based on a Leksell framework. The implementation method specifically comprises the steps that firstly, three-dimensional reconstruction is carried out on head MRI data; secondly, an included angle between each electrode and the cross section of the human body is set to be an angle a, and an included angle between each electrode and the median sagittal plane of the human body is set to be an angle beta; thirdly, a deep electrode imbedding plane is formulated according to examines and weighs of a preoperative assessment; fourthly, after a head frame of the Leksell framework is installed in the morning of an operation, and head MRI thin-layer chromatographic scanning is carried out; fifthly, preoperative MRI and the MRI obtained in morning of the operation are mixed in a Neurotech system; sixthly, three-dimensional coordinate values X, Y and Z of an inlet point and a far point of each electrode are worked out according to developing points of the Leksell framework on the MRI, and the unique space direction angle a value and the angle beta value of each electrode are worked out; finally, the coordinate values, the angle a direction and the angle beta direction are adjusted on the head frame of the Leksell framework, and the deep electrodes are accurately and quickly implanted to objective positions through customized operative instruments. According to the implementation method, operation is easy and convenient, and the deep electrodes can be precisely, safely, reliably and quickly implanted to the objective positions.

Description

technical field [0001] The invention relates to a method for realizing an electroencephalogram, in particular to a method for realizing a stereotactic electroencephalogram based on a Leksell framework. Background technique [0002] SEEG technology has been clinically used abroad for nearly 40 years. Epilepsy centers in different countries have slightly different methods of realizing SEEG, but the basic principles are the same. SEEG does not require a craniotomy, and only has a 2mm diameter bone hole. During the operation, the cerebral cortex cannot be directly viewed. Therefore, the position and shape of important blood vessels in the cerebral cortex must be clearly understood when planning electrode placement before the operation. One of the existing EEG technologies is to display blood vessels through cerebral angiography DSA technology; the other is to use head MRI and PCA or TOF vascular imaging three-dimensional reconstruction technology to display the shape of the cere...

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Problems solved by technology

[0003] In the traditional technology of craniotomy and buried electrodes, the burying of sheet electrodes can lead to pseudomembrane wrapping the electrodes. After the electrodes are taken out, the dura mater and pseudomembrane are tightly adhered, which is prone to bleeding. It has a certain compression effect on brain tissue, so intracranial hypertension is prone to occur after surgery, which may lead to changes in the characteristics of epileptic seizures, recording non-habitual seizures or difficult to record seizures, and may require craniotomy to remove hematoma when there is a lot of bleeding Continue to monitor intracranial EEG; in the face of difficult-to-locate tuberous sclerosis, multiple structural abnormalities, intractable epilepsy that is difficult to locate, previous brain trauma, bleeding, infection, surgery history, heavy adhesions, and epileptic focus located Ribbon questions are not suitable when

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