Application of Gafchromic® film in the dosimetry of an intravascular brachytherapy source

The methodology of brachytherapy source dosimetry with Gafchromic® MD 55-2 film (ISP Technologies, Inc.) is examined with an emphasis on the nonlinearity of the optical density-dose relation within the dynamic dose range, the radial distance-dependent measurement uncertainty, and the format of data...

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Bibliographic Details
Published in:Medical physics (Lancaster) 2006-07, Vol.33 (7), p.2519-2524
Main Authors: Song, Haijun, Roa, D. Eduardo, Yue, Ning, d’Errico, Francesco, Chen, Zhe, Nath, Ravinder
Format: Article
Language:English
Subjects:
Ancillary equipment
blood vessels
Blood Vessels - radiation effects
brachytherapy
Brachytherapy - methods
Calibration
Cameras
Charge coupled devices
Checkmate™ intravascular brachytherapy system
Computer software
Dosimetry
Error analysis
Film Dosimetry - instrumentation
Film Dosimetry - methods
Gafchromic
Humans
Ir-192
Iridium Radioisotopes - therapeutic use
IVB
MD 55-2
Measurement and error theory
measurement uncertainty
Medical imaging
microdosimetry
Photons
Polynomials
Radiation Dosage
radiochromic
Radiometry
Radiotherapy Dosage
Therapeutic applications, including brachytherapy
X-Ray Film
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Summary:The methodology of brachytherapy source dosimetry with Gafchromic® MD 55-2 film (ISP Technologies, Inc.) is examined with an emphasis on the nonlinearity of the optical density-dose relation within the dynamic dose range, the radial distance-dependent measurement uncertainty, and the format of data presentation. The specific source chosen for this study was a Checkmate™ (Cordis Corporation) intravascular brachytherapy system. The two-dimensional dose distribution around the source was characterized by a comprehensive analysis of measurement uncertainties. A comparative analysis of the dosimetric data from the vendor and from the scientific literature showed a substantial consistency of the information available for the Checkmate™ source. Our two-dimensional dosimetric data for the Checkmate™ source trains is presented in the form of measured along and away dose tables.
ISSN:0094-2405
2473-4209
DOI:10.1118/1.2208930