search
for
 About Bioline  All Journals  Testimonials  Membership  News


Journal of Cancer Research and Therapeutics
Medknow Publications on behalf of the Association of Radiation Oncologists of India (AROI)
ISSN: 0973-1482
EISSN: 0973-1482
Vol. 4, No. 2, 2008, pp. 88-90
Bioline Code: cr08023
Full paper language: English
Document type: Short Communication
Document available free of charge

Journal of Cancer Research and Therapeutics, Vol. 4, No. 2, 2008, pp. 88-90

 en Multileaf collimator transmission from the first Hi-Art II helical tomotherapy machine in India
Kinhikar, Rajesh A.

Abstract

The purpose of this study was to measure the multileaf collimator (MLC) transmission from the first Hi-Art II tomotherapy machine installed at the Advanced Center for Treatment, Research, and Education in Cancer (ACTREC). The MLC transmission was measured with an A1SL ion chamber and the radiographic extended dose range (EDR2) film in virtual water slabs at 1.5-cm depth with a source-to-surface distance of 85 cm. The MLC transmission was measured for 30 s with all leaves open and for 360 s with all leaves closed. The movable jaws were set to the calibration field size of 5 x 40 cm at isocenter. The MLC transmission was found to be 0.3% with the ion chamber and 0.32% with the film. Thus, the MLC transmission value was found well within the manufacturer tolerance of 0.5%. MLC can safely be used for the beam modulation during intensity-modulated radiotherapy (IMRT) to deliver accurate doses to the patients.

Keywords
Film, ion chamber, multileaf collimator transmission, tomotherapy

 
© Copyright 2008 Journal of Cancer Research and Therapeutics.
Alternative site location: http://www.cancerjournal.net/

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2024, Site last up-dated on 01-Sep-2022.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Google Cloud Platform, GCP, Brazil