Systematic verification of a three-dimensional electron beam dose calculation algorithm

Abel Cheng, William B. Harms, Russell L. Gerber, John Wong, James A. Purdy

Research output: Contribution to journalArticle

Abstract

A three-dimensional electron beam dose calculation algorithm implemented on a commercial radiotherapy treatment planning system is described. The calculation is based on the M.D. Anderson Hospital (M.D.A.H.) pencil beam model, which uses the Fermi-Eyges theory of thick-target multiple Coulomb scattering. To establish the calculation algorithm's accuracy as well as its limitations, it was systematically and extensively tested and evaluated against a set of benchmark measurements. Various levels of dose and spatial tolerances were used to validate the calculation quantitatively. Results are presented in terms of the percentage of data points meeting a specific tolerance level. The algorithm's ability to accurately simulate commonly used clinical setup geometries, including standard or extended SSDs, blocked fields, irregular surfaces, and heterogeneities, is demonstrated. Regions of disagreement between calculations and measurements are also shown. The clinical implication of such disagreements is addressed, and the algorithmic assumptions involved are discussed.

Original languageEnglish (US)
Pages (from-to)685-693
Number of pages9
JournalMedical Physics
Volume23
Issue number5
DOIs
StatePublished - 1996
Externally publishedYes

Fingerprint

Electrons
Silver Sulfadiazine
Benchmarking
Radiotherapy
Therapeutics

Keywords

  • 3D radiation treatment planning
  • algorithm verification
  • electron beams
  • pencil beam calculation

ASJC Scopus subject areas

  • Biophysics

Cite this

Systematic verification of a three-dimensional electron beam dose calculation algorithm. / Cheng, Abel; Harms, William B.; Gerber, Russell L.; Wong, John; Purdy, James A.

In: Medical Physics, Vol. 23, No. 5, 1996, p. 685-693.

Research output: Contribution to journalArticle

Cheng, Abel ; Harms, William B. ; Gerber, Russell L. ; Wong, John ; Purdy, James A. / Systematic verification of a three-dimensional electron beam dose calculation algorithm. In: Medical Physics. 1996 ; Vol. 23, No. 5. pp. 685-693.
@article{94010341eb6d4c71841824f6775720ad,
title = "Systematic verification of a three-dimensional electron beam dose calculation algorithm",
abstract = "A three-dimensional electron beam dose calculation algorithm implemented on a commercial radiotherapy treatment planning system is described. The calculation is based on the M.D. Anderson Hospital (M.D.A.H.) pencil beam model, which uses the Fermi-Eyges theory of thick-target multiple Coulomb scattering. To establish the calculation algorithm's accuracy as well as its limitations, it was systematically and extensively tested and evaluated against a set of benchmark measurements. Various levels of dose and spatial tolerances were used to validate the calculation quantitatively. Results are presented in terms of the percentage of data points meeting a specific tolerance level. The algorithm's ability to accurately simulate commonly used clinical setup geometries, including standard or extended SSDs, blocked fields, irregular surfaces, and heterogeneities, is demonstrated. Regions of disagreement between calculations and measurements are also shown. The clinical implication of such disagreements is addressed, and the algorithmic assumptions involved are discussed.",
keywords = "3D radiation treatment planning, algorithm verification, electron beams, pencil beam calculation",
author = "Abel Cheng and Harms, {William B.} and Gerber, {Russell L.} and John Wong and Purdy, {James A.}",
year = "1996",
doi = "10.1118/1.597714",
language = "English (US)",
volume = "23",
pages = "685--693",
journal = "Medical Physics",
issn = "0094-2405",
publisher = "AAPM - American Association of Physicists in Medicine",
number = "5",

}

TY - JOUR

T1 - Systematic verification of a three-dimensional electron beam dose calculation algorithm

AU - Cheng, Abel

AU - Harms, William B.

AU - Gerber, Russell L.

AU - Wong, John

AU - Purdy, James A.

PY - 1996

Y1 - 1996

N2 - A three-dimensional electron beam dose calculation algorithm implemented on a commercial radiotherapy treatment planning system is described. The calculation is based on the M.D. Anderson Hospital (M.D.A.H.) pencil beam model, which uses the Fermi-Eyges theory of thick-target multiple Coulomb scattering. To establish the calculation algorithm's accuracy as well as its limitations, it was systematically and extensively tested and evaluated against a set of benchmark measurements. Various levels of dose and spatial tolerances were used to validate the calculation quantitatively. Results are presented in terms of the percentage of data points meeting a specific tolerance level. The algorithm's ability to accurately simulate commonly used clinical setup geometries, including standard or extended SSDs, blocked fields, irregular surfaces, and heterogeneities, is demonstrated. Regions of disagreement between calculations and measurements are also shown. The clinical implication of such disagreements is addressed, and the algorithmic assumptions involved are discussed.

AB - A three-dimensional electron beam dose calculation algorithm implemented on a commercial radiotherapy treatment planning system is described. The calculation is based on the M.D. Anderson Hospital (M.D.A.H.) pencil beam model, which uses the Fermi-Eyges theory of thick-target multiple Coulomb scattering. To establish the calculation algorithm's accuracy as well as its limitations, it was systematically and extensively tested and evaluated against a set of benchmark measurements. Various levels of dose and spatial tolerances were used to validate the calculation quantitatively. Results are presented in terms of the percentage of data points meeting a specific tolerance level. The algorithm's ability to accurately simulate commonly used clinical setup geometries, including standard or extended SSDs, blocked fields, irregular surfaces, and heterogeneities, is demonstrated. Regions of disagreement between calculations and measurements are also shown. The clinical implication of such disagreements is addressed, and the algorithmic assumptions involved are discussed.

KW - 3D radiation treatment planning

KW - algorithm verification

KW - electron beams

KW - pencil beam calculation

UR - http://www.scopus.com/inward/record.url?scp=0029934826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029934826&partnerID=8YFLogxK

U2 - 10.1118/1.597714

DO - 10.1118/1.597714

M3 - Article

C2 - 8724741

AN - SCOPUS:0029934826

VL - 23

SP - 685

EP - 693

JO - Medical Physics

JF - Medical Physics

SN - 0094-2405

IS - 5

ER -