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The use of an inexpensive red acetate filter to improve the sensitivity of GAFChromic dosimetry
Author(s) -
Odero D. O.,
Gluckman G. R.,
Welsh K.,
Wlodarczyk R. A.,
Reinstein L. E.
Publication year - 2001
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.1382605
Subject(s) - densitometer , dosimetry , materials science , optics , sensitivity (control systems) , nuclear medicine , medicine , physics , engineering , electronic engineering
The sensitivity of GAFChromic dosimetry using a conventional broad band light source densitometer has significantly been improved twofold using an inexpensive red acetate filter overlay during the densitometric measurements. This thin sheet of red acetate enhances the dosimetric analysis of radiochromic blue image distributions recorded on GAFChromic films. The combination provides higher sensitivity in the optical density measurements than the more expensive He–Ne laser‐scanning densitometers.