Stereotactic Radiosurgery

Giới thiệu về Stereotactic Radiosurgery

Stereotactic radiosurgery is a general term for a group of techniques, including Gamma Knife and CyberKnife systems, that deliver a highly focused dose of radiation to a precisely defined target in the brain or spine using three-dimensional coordinates; despite the name, it does not involve any actual cutting or incision. The technique relies on detailed imaging, typically MRI and CT scans fused together, to map the exact size, shape, and location of the target, whether a tumor, vascular malformation, or an area of abnormal nerve activity, and then aims multiple radiation beams from different directions so they overlap only at the target, minimizing the dose reaching surrounding healthy tissue. Because of this precision, treatment can often be completed in a single session or a small number of sessions rather than the several weeks required by conventional radiotherapy. It is commonly used for small to medium brain tumors, certain vascular abnormalities, and cases where a lesion sits close to structures that make open surgery risky. India's major radiosurgery centres offer these technologies with the imaging and physics support required for accurate planning, allowing overseas patients to complete treatment within a compact visit.