Comparison of Hi-Art Tomotherapy Machine Outputs Using AAPM TG-148 and IAEA TRS 483 Codes of Practice

Abstract

Comparison of Hi-Art Tomotherapy Machine Outputs using AAPM TG-148 and IAEA TRS 483 Codes of Practice. This paper describes a short history and technological aspect from a Hi-Art tomotherapy machine. The comparison between the tomotherapy machine and conventional linear accelerator machine in the technological aspect and therapy features was also described. There are two codes of practice to determinate the absorbed dose to water from the Hi-Art tomotherapy machine, The AAPM TG-148 and IAEA Technical Report Series No. 483. Determination of the absorbed dose to water was carried out at the machine specific reference condition by using the ionization chamber type of PTW TW 30013 SN 6367 volume 0.6 cc, and electrometer PTW Webline T10022/268. The results obtained show that the value of absorbed dose to water using the AAPM TG-148 was 8507 ± 2.4 mGy/minute and while using the IAEA TRS 483 the value of absorbed dose to water was 8485 ± 2.4 mGy/minute. The comparison result of the determination of the absorbed dose to water using AAPM TG-148 and IAEA TRS 483 protocol has a deviation of 0.2%.