Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/329
Title: Radiation dose estimation for radiochromic films based on measurements at multiple absorption peaks
Authors: Fung, Karl Ka-lok
Lee, Kit Yee
Subjects: Radiation dose estimation
Radiochromic films
Issue Date: 22-Apr-2008
Source: US Patent 7,361,908 B2. Washington, DC: US Patent and Trademark Office, 2008.
Abstract: A method of estimating a radiation dose deposited on a radiochromic film based on absorption measurements at least at two wavelengths as well as devices implementing the estimation method. The method includes the following steps: (a) measuring absorption values at a first wavelength and a second wavelength; (b) converting the absorption values at the two wavelengths to dose values at the corresponding wavelengths by using a calibration procedure; (c) obtaining a weighting factor curve (weighting factor vs. dose) at each wavelengths; and (d) obtaining an estimate of irradiation dose at the location on the radiochromic film by minimizing the objective function which takes the weighting factors and the dose values at both wavelengths as input.
Rights: Assignee: The Hong Kong Polytechnic University.
Type: Patent
URI: http://hdl.handle.net/10397/329
Appears in Collections:Patents of PolyU
HTI Patents

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