First of all, the patient's intracranial lesion is identified by means of medical imaging equipment such as CT, magnetic **** vibration imaging or digital subtraction device, and stereotactic instrument, and the target point's range and size are precisely located. Then the data obtained from the imaging examination is inputted into the computer and processed by the three-dimensional treatment planning system, which generates a three-dimensional model diagram of the lesion and its surrounding tissue structure, and after a series of calculations, the optimal treatment plan is determined and ensures that the ray energy is concentrated on the target point to avoid damaging the surrounding tissues. Finally, γ-rays are emitted in accordance with the proposed treatment plan to treat the patient.
This shows that the γ-knife is not a single device, but a new high-tech medical device that integrates the original medical imaging technology, stereotactic technology and high-energy radiation technology with computer technology.
While the γ-knife has a "knife" in its name, its biggest feature happens to be that it does not have to use a knife for treatment, does not have to perform craniotomy, does not have to be under general anesthesia, does not bleed, does not hurt normal tissues, does not produce neurological dysfunction, and has fewer complications, and hospitalization time is also relatively short. This is more suitable for those patients who are not in good health and are not suitable for craniotomy.
However, there is no cure-all under the sun, and the magical γ-knife is not a miracle knife that can cure all diseases. Usually, they can only cure cerebrovascular lesions such as arterial and venous malformations with a diameter of less than 3 centimeters, located in the functional area, brainstem or deep, as well as certain malignant tumors such as neurinomas, meningiomas, gliomas, and so on.