Abstract
The authors have demonstrated a practical method to transform the densitometer readings to a quantity (apparent dose) that linearises the dose-response curve for the Kodak XV-2 film for all conditions used (different energies, irradiation geometries and processing). The determination of the constants for the pair film-densitometer has to be done only once, using a set of conditions chosen as reference. The linearisation method proposed permits relative film dosimetry, in the same film, without any calibration. Beam profiles (electrons or photons) obtained in several depths in a single film (parallel geometry), can be used to obtain the isodose chart, for a given field size. Only central axis depth dose data for the particular field is additionally required. Treatment plan systems can usually use these data as input to generate isodose charts.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
