PMID: 8961372Oct 1, 1996Paper

Three dimensional comparison of blocked arcs vs. four and six field conformal treatment of the prostate

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology
P F AkazawaL Margolis

Abstract

The purpose of this study is to compare five different techniques for treatment the prostate without seminal vesicles. Dose volume histograms and a time survey are the tools that were used for this analysis. For this study we compared 3D techniques using four and six field conformal treatments, to open and blocked 8 x 8 cm2 120 degrees bilateral arcs. All the plans were normalized to deliver 100% to the central axis, and full 3D calculations were performed. Blocked arcs were created using the 'average beam's eye view' (A-BEV) technique. Analysis of the dose volume histograms revealed: (1) Arcs with blocks result in an improved dose distribution compared to standard arcs and four field 3DCRT techniques, (2) The DVH associated with blocked arcs, using block margins of 1.3 cm, resulted in a somewhat lower dose to the rectum but a 'tighter' margin around the prostate compared to the DVH generated using the six field 3DCRT technique. This technique is for treatment of the prostate only, when treatment of the seminal vesicle is not required. The use of blocked arcs significantly improved the dose distribution compared to using standard arcs and 4-field conformal techniques. The DVHs associated with using blocked arcs is comparable to...Continue Reading

Citations

Mar 17, 2004·Medical Dosimetry : Official Journal of the American Association of Medical Dosimetrists·G BaumanE Wong
May 2, 2000·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·V S KhooD P Dearnaley
Aug 6, 1999·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·J L BedfordS Webb
May 10, 2000·International Journal of Radiation Oncology, Biology, Physics·J B FiveashH M Sandler
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Jul 8, 1999·Cancer radiothérapie : journal de la Société française de radiothérapie oncologique·S M MagriniG P Biti
Sep 16, 1999·International Journal of Radiation Oncology, Biology, Physics·P W McLaughlinR K Ten Haken
Nov 15, 2008·Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology·Masahiro SasaokaKyuuichi Kadoya
May 2, 2008·Journal of Applied Clinical Medical Physics·Mohamed MetwalyAbdel Sattar Mohamed Sallam

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