高エネルギー電子線治療の線量測定マニュアル

概要

論文の詳細を見る
A simplified procedure for dosimetry using high energy electron beams in radiotherapy is described based on the JARP's protocol in this report. The mean energy of the incident electron beams at the surface of the phantom is determined by the 50% ionization level in water. The procedure for determination of the mean energy is greatly simplified according to this method with accuracy being maintained. The calculation of absorbed dose is also simplified by using a table of absorbed dose conversion factors. Tables are provided absorbed dose conversion factors for 9 kinds of commercial ionization chambers. This report describes calculation of an absorbed dose using the table of its conversion factors, the simplified determination of the mean energy of electron beams, calibration of the dose monitoring system, measurement of the output factor, and determination of monitor unit for a planned target dose.
1991-09-01