Dose Course 2018_Flipping book
Radiochromic film: principle of detection
❑ Film emulsion is a radiation sensitive monomer. The coloration process is based on
radiation-induced polymerization. The polymer is blue in color and film absorbs light in the
red part of visible spectrum.
MD-55-2 15 Gy
EBT;1.5 Gy
Red light 635-700 nm
Soares et al. chapter 23 AAPM Summer School, 2009
OD =-log
(T) =-log
(I
/I)
10
10
0
OD is proportional to absorbed dose
Made with FlippingBook HTML5