High-resolution dosimetry using radiochromic film and a document scanner.
A method of reading exposed radiochromic film is described which has significant advantages over conventional densitometry. The method employs a document scanner and associated software for imaging the film. The resulting images are easily analysed using standard software to yield high-resolution dose maps. A calibration was performed which relates scanner signal to dose, allowing for the determination of dose at any point on an exposed film. Results obtained using a broad-band densitometer are compared to those where the scanner has been used. The technique was used to measure the dose distribution around a COMS-type ophthalmic applicator.
Stevens
M A
MA
Department of Physics and Astronomy, University of Canterbury, Christchurch, New Zealand.
Turner
J R
JR
Hugtenburg
R P
RP
Butler
P H
PH
D003720:Densitometry / Q000379:methods; D005373:Film Dosimetry / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D019047:Phantoms, Imaging; D017785:Photons; D015203:Reproducibility of Results; D012984:Software; D014867:Water; D014962:X-Ray Film
D014867:Water