Beam characteristics of a retrofitted double-focused multileaf collimator

Indra J. Das, Gregory E. Desobry, Shawn W. McNeeley, Elizabeth C. Cheng, Timothy E. Schultheiss

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Multileaf collimators (MLCs) are generally believed to be convenient and cost-effective tools for intensity modulation and conformal therapy. They are becoming a standard feature on new accelerators; however, the older units can be retrofitted with modern MLCs. Before such a unit can be clinically used, the beam characteristics must be verified. In this study the beam characteristics of a Siemens double-focused MLC retrofitted to an MD2 linear accelerator are presented. The head leakage along with inter- and intra-leaf radiation transmission were measured using film. The collimator (S(c)), phantom (S(p)), total (S(cp)) scatter factors, central axis depth dose, beam profiles for off-axis ratios, penumbra, and surface dose were evaluated for square, rectangular, and irregularly shaped fields. The maximum head leakage was estimated to be

Original languageEnglish (US)
Pages (from-to)1676-1684
Number of pages9
JournalMedical Physics
Volume25
Issue number9
DOIs
StatePublished - Sep 1998
Externally publishedYes

Fingerprint

Head
Particle Accelerators
Hepatocyte Growth Factor
Radiation
Costs and Cost Analysis
Therapeutics

Keywords

  • Beam characteristics
  • Double-focused leaves
  • Multileaf collimator

ASJC Scopus subject areas

  • Biophysics

Cite this

Das, I. J., Desobry, G. E., McNeeley, S. W., Cheng, E. C., & Schultheiss, T. E. (1998). Beam characteristics of a retrofitted double-focused multileaf collimator. Medical Physics, 25(9), 1676-1684. https://doi.org/10.1118/1.598348

Beam characteristics of a retrofitted double-focused multileaf collimator. / Das, Indra J.; Desobry, Gregory E.; McNeeley, Shawn W.; Cheng, Elizabeth C.; Schultheiss, Timothy E.

In: Medical Physics, Vol. 25, No. 9, 09.1998, p. 1676-1684.

Research output: Contribution to journalArticle

Das, IJ, Desobry, GE, McNeeley, SW, Cheng, EC & Schultheiss, TE 1998, 'Beam characteristics of a retrofitted double-focused multileaf collimator', Medical Physics, vol. 25, no. 9, pp. 1676-1684. https://doi.org/10.1118/1.598348
Das IJ, Desobry GE, McNeeley SW, Cheng EC, Schultheiss TE. Beam characteristics of a retrofitted double-focused multileaf collimator. Medical Physics. 1998 Sep;25(9):1676-1684. https://doi.org/10.1118/1.598348
Das, Indra J. ; Desobry, Gregory E. ; McNeeley, Shawn W. ; Cheng, Elizabeth C. ; Schultheiss, Timothy E. / Beam characteristics of a retrofitted double-focused multileaf collimator. In: Medical Physics. 1998 ; Vol. 25, No. 9. pp. 1676-1684.
@article{abd4675584e642f8971a7d8e2e5b2196,
title = "Beam characteristics of a retrofitted double-focused multileaf collimator",
abstract = "Multileaf collimators (MLCs) are generally believed to be convenient and cost-effective tools for intensity modulation and conformal therapy. They are becoming a standard feature on new accelerators; however, the older units can be retrofitted with modern MLCs. Before such a unit can be clinically used, the beam characteristics must be verified. In this study the beam characteristics of a Siemens double-focused MLC retrofitted to an MD2 linear accelerator are presented. The head leakage along with inter- and intra-leaf radiation transmission were measured using film. The collimator (S(c)), phantom (S(p)), total (S(cp)) scatter factors, central axis depth dose, beam profiles for off-axis ratios, penumbra, and surface dose were evaluated for square, rectangular, and irregularly shaped fields. The maximum head leakage was estimated to be",
keywords = "Beam characteristics, Double-focused leaves, Multileaf collimator",
author = "Das, {Indra J.} and Desobry, {Gregory E.} and McNeeley, {Shawn W.} and Cheng, {Elizabeth C.} and Schultheiss, {Timothy E.}",
year = "1998",
month = "9",
doi = "10.1118/1.598348",
language = "English (US)",
volume = "25",
pages = "1676--1684",
journal = "Medical Physics",
issn = "0094-2405",
publisher = "AAPM - American Association of Physicists in Medicine",
number = "9",

}

TY - JOUR

T1 - Beam characteristics of a retrofitted double-focused multileaf collimator

AU - Das, Indra J.

AU - Desobry, Gregory E.

AU - McNeeley, Shawn W.

AU - Cheng, Elizabeth C.

AU - Schultheiss, Timothy E.

PY - 1998/9

Y1 - 1998/9

N2 - Multileaf collimators (MLCs) are generally believed to be convenient and cost-effective tools for intensity modulation and conformal therapy. They are becoming a standard feature on new accelerators; however, the older units can be retrofitted with modern MLCs. Before such a unit can be clinically used, the beam characteristics must be verified. In this study the beam characteristics of a Siemens double-focused MLC retrofitted to an MD2 linear accelerator are presented. The head leakage along with inter- and intra-leaf radiation transmission were measured using film. The collimator (S(c)), phantom (S(p)), total (S(cp)) scatter factors, central axis depth dose, beam profiles for off-axis ratios, penumbra, and surface dose were evaluated for square, rectangular, and irregularly shaped fields. The maximum head leakage was estimated to be

AB - Multileaf collimators (MLCs) are generally believed to be convenient and cost-effective tools for intensity modulation and conformal therapy. They are becoming a standard feature on new accelerators; however, the older units can be retrofitted with modern MLCs. Before such a unit can be clinically used, the beam characteristics must be verified. In this study the beam characteristics of a Siemens double-focused MLC retrofitted to an MD2 linear accelerator are presented. The head leakage along with inter- and intra-leaf radiation transmission were measured using film. The collimator (S(c)), phantom (S(p)), total (S(cp)) scatter factors, central axis depth dose, beam profiles for off-axis ratios, penumbra, and surface dose were evaluated for square, rectangular, and irregularly shaped fields. The maximum head leakage was estimated to be

KW - Beam characteristics

KW - Double-focused leaves

KW - Multileaf collimator

UR - http://www.scopus.com/inward/record.url?scp=0031690712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031690712&partnerID=8YFLogxK

U2 - 10.1118/1.598348

DO - 10.1118/1.598348

M3 - Article

C2 - 9775373

AN - SCOPUS:0031690712

VL - 25

SP - 1676

EP - 1684

JO - Medical Physics

JF - Medical Physics

SN - 0094-2405

IS - 9

ER -