Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter

Alexandra Rink; I. Alex Vitkin; David A. Jaffray

doi:10.1118/1.2431425

Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter

Alexandra Rink, I. Alex Vitkin, David A. Jaffray

Research output: Contribution to journal › Article › peer-review

80 Scopus citations

Abstract

The response of radiochromic film, GafChromic™ EBT, was investigated for dependence on x-ray beam energy using a previously reported real-time optical readout approach. X-ray beams of energy from 75 kVp to 18 MV were employed. The dose-induced change in optical density for the EBT film was compared to values obtained for GafChromic™ HS and MD-55 films, exposed under the same conditions. All responses were normalized to that obtained for ⁶⁰Co irradiation. While change in optical density for 1 Gy of applied dose as measured with HS and MD-55 films decreased by approximately 40% at low energies, the mean change in optical density of EBT film remained within 3% of that in the ⁶⁰Co beam over the entire energy range.

Original language	English (US)
Pages (from-to)	458-463
Number of pages	6
Journal	Medical physics
Volume	34
Issue number	2
DOIs	https://doi.org/10.1118/1.2431425
State	Published - 2007
Externally published	Yes

Keywords

Densitometry
Dosimetry
Energy dependence
Radiochromic film

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

Access to Document

10.1118/1.2431425

Cite this

@article{b2838d5ba1694854908be81b9e2bf04a,

title = "Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter",

abstract = "The response of radiochromic film, GafChromic{\texttrademark} EBT, was investigated for dependence on x-ray beam energy using a previously reported real-time optical readout approach. X-ray beams of energy from 75 kVp to 18 MV were employed. The dose-induced change in optical density for the EBT film was compared to values obtained for GafChromic{\texttrademark} HS and MD-55 films, exposed under the same conditions. All responses were normalized to that obtained for 60Co irradiation. While change in optical density for 1 Gy of applied dose as measured with HS and MD-55 films decreased by approximately 40% at low energies, the mean change in optical density of EBT film remained within 3% of that in the 60Co beam over the entire energy range.",

keywords = "Densitometry, Dosimetry, Energy dependence, Radiochromic film",

author = "Alexandra Rink and Vitkin, {I. Alex} and Jaffray, {David A.}",

note = "Funding Information: The authors would like to thank Jason Ellis, Matt Filletti, Hamideh Alasti, Duncan Galbraith, Dr. Mohammad Islam, and Dr. Robert Heaton of Princess Margaret Hospital for their advice and input. This work was in part funded by Research Studentship of The Terry Fox Foundation through an award (016646) from the National Cancer Institute of Canada, Scace Prostate Cancer Award, National Institutes of Health/National Institute on Aging (R21/R33 AG19381), and by the Fidani Center for Radiation Physics.",

year = "2007",

doi = "10.1118/1.2431425",

language = "English (US)",

volume = "34",

pages = "458--463",

journal = "Medical physics",

issn = "0094-2405",

publisher = "AAPM - American Association of Physicists in Medicine",

number = "2",

}

TY - JOUR

T1 - Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter

AU - Rink, Alexandra

AU - Vitkin, I. Alex

AU - Jaffray, David A.

N1 - Funding Information: The authors would like to thank Jason Ellis, Matt Filletti, Hamideh Alasti, Duncan Galbraith, Dr. Mohammad Islam, and Dr. Robert Heaton of Princess Margaret Hospital for their advice and input. This work was in part funded by Research Studentship of The Terry Fox Foundation through an award (016646) from the National Cancer Institute of Canada, Scace Prostate Cancer Award, National Institutes of Health/National Institute on Aging (R21/R33 AG19381), and by the Fidani Center for Radiation Physics.

PY - 2007

Y1 - 2007

N2 - The response of radiochromic film, GafChromic™ EBT, was investigated for dependence on x-ray beam energy using a previously reported real-time optical readout approach. X-ray beams of energy from 75 kVp to 18 MV were employed. The dose-induced change in optical density for the EBT film was compared to values obtained for GafChromic™ HS and MD-55 films, exposed under the same conditions. All responses were normalized to that obtained for 60Co irradiation. While change in optical density for 1 Gy of applied dose as measured with HS and MD-55 films decreased by approximately 40% at low energies, the mean change in optical density of EBT film remained within 3% of that in the 60Co beam over the entire energy range.

AB - The response of radiochromic film, GafChromic™ EBT, was investigated for dependence on x-ray beam energy using a previously reported real-time optical readout approach. X-ray beams of energy from 75 kVp to 18 MV were employed. The dose-induced change in optical density for the EBT film was compared to values obtained for GafChromic™ HS and MD-55 films, exposed under the same conditions. All responses were normalized to that obtained for 60Co irradiation. While change in optical density for 1 Gy of applied dose as measured with HS and MD-55 films decreased by approximately 40% at low energies, the mean change in optical density of EBT film remained within 3% of that in the 60Co beam over the entire energy range.

KW - Densitometry

KW - Dosimetry

KW - Energy dependence

KW - Radiochromic film

UR - http://www.scopus.com/inward/record.url?scp=33846582373&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846582373&partnerID=8YFLogxK

U2 - 10.1118/1.2431425

DO - 10.1118/1.2431425

M3 - Article

C2 - 17388161

AN - SCOPUS:33846582373

SN - 0094-2405

VL - 34

SP - 458

EP - 463

JO - Medical physics

JF - Medical physics

IS - 2

ER -

Energy dependence (75 kVp to 18 MV) of radiochromic films assessed using a real-time optical dosimeter

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this