Measurement of dose-area product with GafChromic XR Type R film

Many of the newer X-ray machines are equipped with electronic means to provide dose-area product (DAP) information. For machines without that ability, an alternative method is to record radiation on a film that can handle a large amount of cumulative exposure. The use of GafChromic XR Type R film wa...

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Bibliographic Details
Published in:Journal of applied clinical medical physics 2005-01, Vol.6 (3), p.122-132
Main Authors: Thomas, George, Li, Yushan, Chu, Robert Y L, Cheung, John Y, Maqbool, Feroz, Rabe, Frank, Burns, G Scott
Format: Article
Language:English
Subjects:
Algorithms
Calibration
Densitometry - methods
Dose-Response Relationship, Radiation
Equipment Failure Analysis
Film Dosimetry - instrumentation
Film Dosimetry - methods
Radiation Dosage
Reproducibility of Results
Scanners
Sensitivity and Specificity
Specialty products
Standard deviation
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Summary:Many of the newer X-ray machines are equipped with electronic means to provide dose-area product (DAP) information. For machines without that ability, an alternative method is to record radiation on a film that can handle a large amount of cumulative exposure. The use of GafChromic XR Type R film was investigated for this purpose by placing it at the X-ray tube assembly to record the radiation in interventional radiological procedures. Dose-area product was determined with a reflective densitometer and then with a flatbed scanner. Precisions were demonstrated to be 5% and 2%, respectively. In a comparison with the machine-recorded DAP, a regression analysis showed the validity of both techniques for values less than 1200 Gy-cm2.
ISSN:1526-9914
1526-9914
DOI:10.1120/jacmp.2025.25352