Radiation dose estimation for radiochromic films based on measurements at multiple absorption peaks
- Summary
- 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.
- Supplementary Information
- Patent Number: US7361908B2
Application Number: US2006403677A
Inventor: Fung, Karl Ka Lok | Lee, Kit Yee
Priority Date: 13 Apr 2006
Priority Number: US7361908B2
Application Date: 13 Apr 2006
Publication Date: 22 Apr 2008
IPC Current: G01N002100
US Class: 2504741
Assignee Applicant: The Hong Kong Polytechnic University
Title: Radiation dose estimation for radiochromic films based on measurements at multiple absorption peaks
Usefulness: Radiation dose estimation for radiochromic films based on measurements at multiple absorption peaks
Summary: Used for estimating radiation dose on a radiochromic film, imparted to a patient receiving radiation treatment.
Novelty: Radiation dose estimation method for radiochromic film, involves deriving curve of weighting factor versus radiation dose, at each wavelength of absorption measurements to obtain estimate of radiation dose
- Industry
- Biomedical
- Sub Category
- Medical Device
- Application No.
- US2006403677A
- Others
- LEE Kit-yee
FUNG Ka-lok, Karl
- Country/Region
- USA
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