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Gamma射線刀對顱內病灶治療的簡介

The Development of Radiosurgery -Introduction of the Gamma Knife for Brain Lesions-

摘要


γ-射線刀應用到臨床至今約20年,主要是應用立體定位的方法將大量放射線經過頭部四週的瞄準儀,集中照射到胮部深部的病灶;依病灶的大小,事先由電腦畫出放射線在病灶部的各種等量曲線,取出其中最恰當之等量曲線,再給予病灶週圍之最低照射所需劑量,配合等量曲線則可由電腦算出所需照射時間及最大給予之全部劑量。 目前東京大學附屬醫院已治療70例患者,主要為在3公分直徑以內大小的動靜脈畸形、小腦橋腦角腫瘤及腦膜瘤。

關鍵字

無資料

並列摘要


In 1990, the first gamma unit in Asia was installed at Tokyo University Hospital. This article describes the radiosurgical techniques used and clinical experiences during treatment of 70 cases at the unit. Stereotactic radiosurgery using a gamma knife for the treatment of AVM, CPA tumor and meningioma has been used for more than 20 years. With this form of therapy, a high dose of radiation is delivered form multidirectional beams to deep lesions of the brain, incurring only minimal radiation exposure at the periphery. When a large dose of radiation is applied to a small area, there may be certain side effects especially if care is not taken. Accordingly, treatment of brain lesions using a gamma knife requires teamwork, even though it appears to be a safe procedure at the present time.

並列關鍵字

r-knife collimator isodose curve

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