방사선 강내치료를 위한 소조사면 전자선 cone의 선량분포 특성 = Fabrication and Dosimetry Characteristics of Intracavitary Cones for Radiotheraphy

다국어 초록 (Multilingual Abstract)

The intracavitary cones were designed which were made of stain-less steel and have scratched inside cone to be generated electron scatter and designed to be attached easily to the LINAC collimator and controlled cones length to be contacted smoothly between the patient and the cone tip.
Two types of intracavitary cones were designed. One is the straight end cones with circular opening on the distal end and the other is 30 degree beveled end cones with elliptical opening on the distal end
Each type of intracavitary cone ranged in daimeter from 2.5 cm to 3.5 cm and required a separate set of lower trimmer annulias cone diameter. The film phantom was designed with an internal cassette that accurately aligned the film edge with the film phantom surface. Film optical density data were measured by photodensitometer( Wellhofer 700i)
Dosimetry measurements were made to commission the LINAC for 6 - 20 MeV electron using the intracavitary cones. Isodose curves were measured for all energy and cones combinations.
Output is defined as the maximum dose per MU along the clinical central axis in water at 113 cm SSD. Calibration output, defined to be the output for the 15cm x 15cm diameter straight cone, was adjusted to 1.00 cGy/MU at each energy according to the TG-21 pro- tocol.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 재료 및 방법
• 1. 실험장치
• 2. 측정방법
• Ⅲ. 결과 및 고찰
• Ⅳ. 결론