Question 2: What is Gamma Knife? Advantages and disadvantages of gamma knife "Gamma knife" is called "knife", but it is not a real scalpel. It is a hemispherical helmet covered with collimator, which can emit 20 1 cobalt 60 high dose ion rays-gamma rays. We call it a "target" to locate a certain part accurately through modern imaging technologies such as CT and magnetic vibration. Its positioning is extremely accurate, and the error is often less than 0.5 mm; The dose gradient of each gamma ray is very large, and there is almost no damage to the tissue. However, 20 1 rays collected from different positions can fatally destroy the target tissue. It is named after its scalpel function. It has the advantages of no trauma, no general anesthesia, no surgery, no bleeding and no infection. Second, the principle of gamma knife treatment The gamma knife stereotactic radiotherapy system is a stereotactic radiosurgery treatment device that integrates stereotactic technology and radiosurgery technology and mainly treats brain diseases. It adopts the geometric focusing method of gamma rays, and focuses the planned dose of gamma rays on the pre-selected target in the body through accurate stereo orientation, so as to destroy the tissues in the point once and fatally, and achieve the effect of surgical resection or destruction. The normal tissue around the focus is out of focus and only irradiated by a single beam of gamma rays, so the energy is very low and it is not damaged. Just like focusing sunlight with a magnifying glass, the focused heat can ignite an object, while the sunlight outside the focus is safe. Using gamma rays instead of scalpels, the therapeutic irradiation range is very clear from normal tissues, and the edge is like a knife, so people call it "gamma knife" vividly. Gamma knife is divided into head gamma knife and body gamma knife. Head gamma knife includes static gamma knife and rotary gamma knife. Static gamma knife is to install multiple cobalt sources in a spherical helmet and focus on a certain point of the skull. Rotary gamma knife is improved on the basis of static gamma knife and has many advantages. This is a patent of China. Head gamma knife can cure trigeminal neuralgia (trigeminal neuralgia), glioma, meningioma, acoustic neuroma, pituitary adenoma, craniopharyngioma and so on. Body gamma knife is mainly used to treat all kinds of tumors in the whole body. 1 and intracranial benign tumors such as acoustic neuroma, pituitary adenoma and meningioma below 30 mm; 2. Small and deep intracranial arteriovenous malformation; 3. Some operations cannot remove clean benign and malignant tumors; 4. Small and well-defined intracranial metastatic carcinoma; 5, Parkinson's disease, epilepsy, mental illness and other functional diseases. 1. Routine examination after admission: general physical examination, chest X-ray, electrocardiogram, blood test, etc. 2. Imaging examination: High-speed spiral CT and/or magnetic resonance can exclude intracranial tumors, cerebrovascular diseases and other space-occupying lesions, providing a basis for 3D image fusion. 3. EEG: including 32-lead/16-lead general EEG, 24-hour EEG and remote 128-lead full digital EEG monitoring. 4. Further select the items to be examined when necessary: magnetoencephalography, functional magnetic vibration, spectrum analysis of magnetic vibration, single photon emission computed tomography, positron emission computed tomography. The controllable gamma rays emitted by the gamma knife of radioactive element "Cobalt -60" are focused on the tumor focus after geometric focusing, which fatally damages the tumor tissue in the target area and achieves the same effect as a scalpel. Gamma knife is the perfection and development of scalpel in tumor treatment, but it can't replace scalpel. Gamma knife is a radiation-induced lethal therapy, which is incomplete and far less effective than surgery in the long run, so it is suitable for advanced tumors. Or surgical contraindications; Or lose the opportunity for surgery; Or have serious complications; Or postoperative recurrence and metastasis. The scalpel can completely remove the tumor under direct vision and is the first choice for early tumor treatment. Gamma knife is a bloodless operation without anesthesia and special preparation. On the surface, it seems to be a non-invasive treatment, but in fact, the potential trauma of gamma knife should not be underestimated. Gamma knife is a radiation killing therapy. All normal tissues and tumor tissues in the irradiated area were killed without error. The larger the irradiation range and the longer the irradiation time, the greater the damage to normal tissues, especially to living organs. Gamma knife will also cause a series of radiation reactions during or after irradiation, such as hair loss, nausea and vomiting, fatigue, leukopenia, thrombocytopenia and even pancytopenia, and even radiation sickness that is difficult to treat in severe cases; Gamma rays can also interfere with and destroy the normal immune function of human body, which is undoubtedly worse for cancer patients. Some tumors disappear quickly after gamma knife treatment. However, it lasted for a short time, recurred after a few months, deteriorated rapidly and died, which may be related to low immune function.
Question 3: What is gamma knife surgery? Generally used in cerebrovascular and nervous system, gamma rays are used in surgery, which has the characteristics of high accuracy and high safety factor!
Question 4: What is the cost of gamma knife surgery? Gamma knife therapy is generally around 1-30000. Gamma knife is not a real scalpel, but a very advanced radiotherapy equipment. Its full name is: gamma-ray stereotactic therapy system. It uses many fine gamma rays to irradiate the human body from different angles and directions, and makes them all converge at one point to form a focus. Because the dose of each beam of rays is very small, it will not cause damage to the human tissues it passes through. As long as we focus on the focus, we can destroy the focus at one time as accurately as a scalpel, and achieve the magical curative effect of no trauma, no bleeding, no infection, no pain, fast, safe and reliable.
However, gamma knife treatment will have some side effects like chemotherapy, which can be combined with traditional Chinese medicine treatment. Nowadays, Chinese medicine apricot (ginsenoside Rh2) capsule can relieve the symptoms of patients, reduce the side effects during radiotherapy and improve the quality of life.
Question 5: What is Gamma Knife? Gamma knife, also known as stereotactic gamma-ray radiotherapy system, is a kind of treatment equipment integrating modern computer technology, stereotactic technology and surgical technology. It focuses the γ -ray emitted by Co -60 on the focus, and the damage to the target tissue is one-time and fatal, while the radiation passes through the normal tissue of human body with almost no harm, and the dose drops sharply, so the therapeutic irradiation range is very obvious from the normal tissue, and the edge is like a knife cut.
Question 6: What is gamma knife therapy? Gamma knife is not a real scalpel, but also a kind of radiotherapy. Its full name is stereotactic gamma-ray radiotherapy system. It is a modern large-scale high-tech medical equipment integrating modern radiation physics, radiation biology, medical imaging, computer, intelligent automatic control and other disciplines. It uses the R-ray emitted by radioactive element 60Co to focus on the tumor geometrically, and focuses the planned dose of γ-ray on the tumor through precise stereotactic, and destroys it with a one-time lethal dose. Because the radiation is focused in a rotating way, it only shines in an instant and almost harmlessly passes through the normal tissues of the human body, and the dose is drastically reduced. Therefore, the treatment irradiation range and normal tissue are very clear, and the edge is as neat as a scalpel. Therefore, people vividly call it gamma knife.
The therapeutic principle of gamma knife is similar to the focusing process of magnifying glass. When the magnifying glass is placed in the sun, a dazzling light spot or focus will be formed under the magnifying glass. Outside the focus, people feel normal, but there is high heat at the focus, which is enough to ignite some objects. Therefore, the radiation dose is concentrated in the tumor area, so that the tumor can receive enough dose to kill the tumor and achieve the ideal therapeutic effect.
However, gamma knife can not completely replace surgery or traditional chat, and is more suitable for treating tumors with regular shape and relatively small volume. Therefore, for liver cancer, gamma knife is suitable for small liver cancer that cannot be surgically removed or locally ablated.