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There are more or less side effects of brain X-knife surgery. The impact on healthy young people is not big, but the elderly are weak in body and their resistance is reduced after surgery. Coupled with reduced diet, complications may occur. However, surgery is necessary. With the careful care of family members, the difficult times will be overcome. However, X-knife surgery should be done according to one's own condition. If the condition is not serious, it is not necessary. Many diseases in life cannot be separated from examinations. Common examinations in hospitals include: MRI, CT, chest X-ray, color Doppler ultrasound and other medical imaging. So, are there any side effects of brain X-ray?
Head X-knife treatment has side effects, the more common symptoms are: dizziness, headache, nausea, vomiting. When the symptoms are mild, no treatment is needed and they will disappear naturally. When the symptoms are severe, symptomatic treatment is required. Most patients can successfully complete the entire course of treatment, and few patients give up treatment due to intolerance to the side effects of radiotherapy. The side effects of radiotherapy appear after 2-3 radiotherapy sessions. If symptoms occur, report them to the doctor as soon as possible, and the symptoms will disappear with symptomatic medication. Medical staff will pay attention to the patient's condition for 2-3 days when more side effects occur, and deal with them as soon as possible to allow the patient to complete the treatment smoothly.
There are also indications for brain X-knife : small and deep intracranial arteriovenous malformations that cannot be operated on; small (less than 3 cm) benign intracranial tumors that have gaps with important structures such as the optic nerve, hypothalamus, and brainstem, such as acoustic neuroma, pituitary tumor, cerebral concave meningioma, craniopharyngioma, etc.; some benign tumors that cannot be completely removed by conventional craniotomy; small intracranial metastatic tumors with clear boundaries; malignant tumors of important deep intracranial structures that cannot be operated on, on the basis of conventional radiotherapy, CT or MRI reexamination of residual lesions, and lesions less than 3 cm, can be used appropriately. The dose should be small, and it is best to irradiate in multiple times; certain diseases such as intractable headaches, Parkinson's disease, etc.
There are some precautions when doing brain X-knife. <br/> Dosimetric principles: The target area should include clinical tumor foci (tumor area), subclinical foci and the range that the tumor may invade; a reference dose line (prescription dose line) must be drawn up, and the periphery of the target area is the lowest dose point (line) of the target area. When the target boundary is clear, the 50%-70% isodose line is taken, and when the target boundary is unclear, the 80%-90% isodose line is taken; the planned area should coincide with the target area; the dose should be normalized to one point, with single-target treatment on the central axis of rotation and dual-target treatment between the two targets; dose hotspots are not allowed outside the target area; single-target treatment is best.
X-knife is an isocenter linear accelerator, and its radiation source photon beam comes from the linear accelerator. The main devices include a photon beam frame rotating along the horizontal axis, a treatment bed rotating along the vertical axis, a collimator for controlling the photon beam, and a directional frame or a deformable plastic directional frame. The linear accelerator frame and the treatment bed can be rotated horizontally and vertically respectively, so that the photon beam passing through the collimator is concentrated in the isocenter area, just overlapping with the patient's lesion in the stereotactic instrument, so that the photon beam can achieve the purpose of destroying the diseased tissue.
X-knife and Gamma Knife use different radiation sources, but have the same focusing principle and design principle. The difference between the two is that due to the gravitational deformation of the linear accelerator frame and slight deviation during rotation, the treatment bed also has slight deviation during rotation, so the center area of the radiation beam may have a deviation of 0.6cm (Gamma Knife <0.1mm), so X-knife is not suitable for treating pituitary tumors, craniopharyngiomas and other tumors close to the optic chiasm, nor is it suitable for treating lesions in or close to the brainstem because its accuracy needs to be improved.
The therapeutic effect of X-knife in treating AVM or benign tumor in one time is the same as that of Gamma Knife, but due to deviation, the outer edge of the lesion should be slightly enlarged during design; X-knife adopts a deformable surface mode fixation frame and can be used for multiple treatments, which is its advantage. It has fewer side effects in treating gliomas and the same efficacy as Gamma Knife; X-knife uses 80% isodose line as the effective edge dose, which reduces the maximum center dose accordingly, thereby reducing radiation side effects.
The above is a brief introduction to the side effects of brain X-knife and X-knife. I hope that all patients can have a certain understanding of X-knife. |
