Optimized registering of film dosimetry to calculated doses for IMRT quality assurance

Sung Yong Park; J. W. Shin; M. G. Yoon; D. H. Shin; S. B. Lee; D. H. Lee; D. Y. Kim; K. H. Cho; D. O. Shin; M. S. Minhaj

doi:10.1007/978-3-540-36841-0_501

Optimized registering of film dosimetry to calculated doses for IMRT quality assurance

Sung Yong Park, J. W. Shin, M. G. Yoon, D. H. Shin, S. B. Lee, D. H. Lee, D. Y. Kim, K. H. Cho, D. O. Shin, M. S. Minhaj

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The purpose of this study is to develop a software for optimized registering of film dosimetry with calculated dose for Intensity Modulated Radiation Therapy (IMRT) quality assurance. The newly developed software consists of a film device driver and the verification of fluence map. A film device driver follows the TWAIN 32 protocol. This driver enables us to easily calibrate and scan the films in any film scanner. The fluence map verification software is programmed by C++, which is suitable for the extension of future work. Taking advantages of that multi platform Qt (Trolltech, Norway) GUI library, we have made it run on Windows and Linux operating systems even Mac OSX. For drawing and viewing the fluence map in 2 and 3D, OpenGL (SGI Corp., USA) is implemented. Both absolute point dosimetry and 3D film dosimetry were performed throughout the IMRT using Clinac 21EX’s millennium MLC. With these custom-written software modules, the measured and calculated dose distributions for axial planes were superimposed by coincidence of their origins, followed by comparison of the point doses at all matched positions. Then, with the optimization algorithm the setup errors were recovered. We have developed customwritten software modules for managing dose-distribution files, optimizing the position, calculating dose differences, and printing out the report. Differences between the calculated and measured doses over the 3% criterion could be reduced by 15% after applying the optimization algorithm. Optimization dramatically reduced the difference between measured and calculated dose distributions in all cases investigated.

Original language	English
Title of host publication	IFMBE Proceedings
Editors	Sun I. Kim, Tae Suk Suh
Publisher	Springer Verlag
Pages	2000-2003
Number of pages	4
Edition	1
ISBN (Print)	9783540368397
DOIs	https://doi.org/10.1007/978-3-540-36841-0_501
Publication status	Published - 2007
Externally published	Yes
Event	10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 - Seoul, Korea, Republic of Duration: 2006 Aug 27 → 2006 Sept 1

Publication series

Name	IFMBE Proceedings
Number	1
Volume	14
ISSN (Print)	1680-0737
ISSN (Electronic)	1433-9277

Other

Other	10th World Congress on Medical Physics and Biomedical Engineering, WC 2006
Country/Territory	Korea, Republic of
City	Seoul
Period	06/8/27 → 06/9/1

Bibliographical note

Publisher Copyright:
© International Federation for Medical and Biological Engineering 2007.

Keywords

Film dosimetry
Intensity modulated radiation therapy
Optimization algorithm
Quality assurance

ASJC Scopus subject areas

Bioengineering
Biomedical Engineering

Access to Document

10.1007/978-3-540-36841-0_501

Cite this

Park, S. Y., Shin, J. W., Yoon, M. G., Shin, D. H., Lee, S. B., Lee, D. H., Kim, D. Y., Cho, K. H., Shin, D. O., & Minhaj, M. S. (2007). Optimized registering of film dosimetry to calculated doses for IMRT quality assurance. In S. I. Kim, & T. S. Suh (Eds.), IFMBE Proceedings (1 ed., pp. 2000-2003). (IFMBE Proceedings; Vol. 14, No. 1). Springer Verlag. https://doi.org/10.1007/978-3-540-36841-0_501

Park, SY, Shin, JW, Yoon, MG, Shin, DH, Lee, SB, Lee, DH, Kim, DY, Cho, KH, Shin, DO & Minhaj, MS 2007, Optimized registering of film dosimetry to calculated doses for IMRT quality assurance. in SI Kim & TS Suh (eds), IFMBE Proceedings. 1 edn, IFMBE Proceedings, no. 1, vol. 14, Springer Verlag, pp. 2000-2003, 10th World Congress on Medical Physics and Biomedical Engineering, WC 2006, Seoul, Korea, Republic of, 06/8/27. https://doi.org/10.1007/978-3-540-36841-0_501

@inproceedings{c057b6f174144c92abb62938733b7272,

title = "Optimized registering of film dosimetry to calculated doses for IMRT quality assurance",

abstract = "The purpose of this study is to develop a software for optimized registering of film dosimetry with calculated dose for Intensity Modulated Radiation Therapy (IMRT) quality assurance. The newly developed software consists of a film device driver and the verification of fluence map. A film device driver follows the TWAIN 32 protocol. This driver enables us to easily calibrate and scan the films in any film scanner. The fluence map verification software is programmed by C++, which is suitable for the extension of future work. Taking advantages of that multi platform Qt (Trolltech, Norway) GUI library, we have made it run on Windows and Linux operating systems even Mac OSX. For drawing and viewing the fluence map in 2 and 3D, OpenGL (SGI Corp., USA) is implemented. Both absolute point dosimetry and 3D film dosimetry were performed throughout the IMRT using Clinac 21EX{\textquoteright}s millennium MLC. With these custom-written software modules, the measured and calculated dose distributions for axial planes were superimposed by coincidence of their origins, followed by comparison of the point doses at all matched positions. Then, with the optimization algorithm the setup errors were recovered. We have developed customwritten software modules for managing dose-distribution files, optimizing the position, calculating dose differences, and printing out the report. Differences between the calculated and measured doses over the 3% criterion could be reduced by 15% after applying the optimization algorithm. Optimization dramatically reduced the difference between measured and calculated dose distributions in all cases investigated.",

keywords = "Film dosimetry, Intensity modulated radiation therapy, Optimization algorithm, Quality assurance",

author = "Park, {Sung Yong} and Shin, {J. W.} and Yoon, {M. G.} and Shin, {D. H.} and Lee, {S. B.} and Lee, {D. H.} and Kim, {D. Y.} and Cho, {K. H.} and Shin, {D. O.} and Minhaj, {M. S.}",

note = "Publisher Copyright: {\textcopyright} International Federation for Medical and Biological Engineering 2007.; 10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 ; Conference date: 27-08-2006 Through 01-09-2006",

year = "2007",

doi = "10.1007/978-3-540-36841-0_501",

language = "English",

isbn = "9783540368397",

series = "IFMBE Proceedings",

publisher = "Springer Verlag",

number = "1",

pages = "2000--2003",

editor = "Kim, {Sun I.} and Suh, {Tae Suk}",

booktitle = "IFMBE Proceedings",

edition = "1",

}

TY - GEN

T1 - Optimized registering of film dosimetry to calculated doses for IMRT quality assurance

AU - Park, Sung Yong

AU - Shin, J. W.

AU - Yoon, M. G.

AU - Shin, D. H.

AU - Lee, S. B.

AU - Lee, D. H.

AU - Kim, D. Y.

AU - Cho, K. H.

AU - Shin, D. O.

AU - Minhaj, M. S.

PY - 2007

Y1 - 2007

N2 - The purpose of this study is to develop a software for optimized registering of film dosimetry with calculated dose for Intensity Modulated Radiation Therapy (IMRT) quality assurance. The newly developed software consists of a film device driver and the verification of fluence map. A film device driver follows the TWAIN 32 protocol. This driver enables us to easily calibrate and scan the films in any film scanner. The fluence map verification software is programmed by C++, which is suitable for the extension of future work. Taking advantages of that multi platform Qt (Trolltech, Norway) GUI library, we have made it run on Windows and Linux operating systems even Mac OSX. For drawing and viewing the fluence map in 2 and 3D, OpenGL (SGI Corp., USA) is implemented. Both absolute point dosimetry and 3D film dosimetry were performed throughout the IMRT using Clinac 21EX’s millennium MLC. With these custom-written software modules, the measured and calculated dose distributions for axial planes were superimposed by coincidence of their origins, followed by comparison of the point doses at all matched positions. Then, with the optimization algorithm the setup errors were recovered. We have developed customwritten software modules for managing dose-distribution files, optimizing the position, calculating dose differences, and printing out the report. Differences between the calculated and measured doses over the 3% criterion could be reduced by 15% after applying the optimization algorithm. Optimization dramatically reduced the difference between measured and calculated dose distributions in all cases investigated.

AB - The purpose of this study is to develop a software for optimized registering of film dosimetry with calculated dose for Intensity Modulated Radiation Therapy (IMRT) quality assurance. The newly developed software consists of a film device driver and the verification of fluence map. A film device driver follows the TWAIN 32 protocol. This driver enables us to easily calibrate and scan the films in any film scanner. The fluence map verification software is programmed by C++, which is suitable for the extension of future work. Taking advantages of that multi platform Qt (Trolltech, Norway) GUI library, we have made it run on Windows and Linux operating systems even Mac OSX. For drawing and viewing the fluence map in 2 and 3D, OpenGL (SGI Corp., USA) is implemented. Both absolute point dosimetry and 3D film dosimetry were performed throughout the IMRT using Clinac 21EX’s millennium MLC. With these custom-written software modules, the measured and calculated dose distributions for axial planes were superimposed by coincidence of their origins, followed by comparison of the point doses at all matched positions. Then, with the optimization algorithm the setup errors were recovered. We have developed customwritten software modules for managing dose-distribution files, optimizing the position, calculating dose differences, and printing out the report. Differences between the calculated and measured doses over the 3% criterion could be reduced by 15% after applying the optimization algorithm. Optimization dramatically reduced the difference between measured and calculated dose distributions in all cases investigated.

KW - Film dosimetry

KW - Intensity modulated radiation therapy

KW - Optimization algorithm

KW - Quality assurance

UR - http://www.scopus.com/inward/record.url?scp=84958248701&partnerID=8YFLogxK

U2 - 10.1007/978-3-540-36841-0_501

DO - 10.1007/978-3-540-36841-0_501

M3 - Conference contribution

AN - SCOPUS:84958248701

SN - 9783540368397

T3 - IFMBE Proceedings

SP - 2000

EP - 2003

BT - IFMBE Proceedings

A2 - Kim, Sun I.

A2 - Suh, Tae Suk

PB - Springer Verlag

T2 - 10th World Congress on Medical Physics and Biomedical Engineering, WC 2006

Y2 - 27 August 2006 through 1 September 2006

ER -

Optimized registering of film dosimetry to calculated doses for IMRT quality assurance

Abstract

Publication series

Other

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this