Physical Aspect of The Gamma Knife and Its Clinical Application

Yi,  Byong Yong; Chang,  Hyesook; Choi,  Eunkyung; Whang,  C Jin; Kwon,  Y

J Korean Soc Ther Radiol > Volume 9(1); 1991 > Article

Original Article

Journal of the Korean Society for Therapeutic Radiology 1991;9(1): 153-158.

Physical Aspect of The Gamma Knife and Its Clinical Application

Byong Yong Yi, Hyesook Chang, Eunkyung Choi, C Jin Whang, Y Kwon

¹Department of Therapeutic Radiology, Asan Medical Center, College of Medicine, University of Ulsan, Korea.
²Department of Neurosurgery, Asan Medical Center, College of Medicine, University of Ulsan, Korea.

ABSTRACT

The first Leksell Gamma Knife unit(LGU-type B) for radiosurgery in Asia was installed in Asan Medical Center. Mechanical accuracy, output, dose profiles for each collimators were measure during acceptance test. Sixty eight patients (sixty nine cases) had undergone radiosurgery from May 1990 to September 1990. AVM cases were 24 cases (35%), acoustic tumor 10 (14%), pituitary adenoma 4 (6%), metastatic tumor 18 (26%), meningioma 6 (9%) and others 18 (26%). Dose of 25 Gy-100 Gy was delivered at one time according to disease, location and sizes.

Key Words: Gamma Knife, Radiosurgery