文档介绍：Int. J. Radiation Oncology Biol. Phys., Vol. 76, No. 3, pp. 935–942, 2010
Copyright Ó 2010 Elsevier Inc.
Printed in the USA. All rights reserved
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PHYSICS CONTRIBUTION
RADIOTHERAPY TREATMENT PLANS WITH RAPIDARC FOR PROSTATE CANCER
INVOLVING SEMINAL VESICLES AND LYMPH NODES
SUA YOO,., Q. JACKIE WU,., W. ROBERT LEE, ., ., ., AND FANG-FANG YIN,.
Department of Radiation Oncology, Duke University Medical Center, Durham, NC
Purpose: Dosimetric results and treatment delivery efficiency of RapidArc plans to those of conventional intensity-
modulated radiotherapy (IMRT) plans pared using the Eclipse treatment planning system for high-risk
prostate cancer.
Materials and Methods: This study included 10 patients. The primary planning target volume (PTVP) contained
prostate, seminal vesicles, and pelvic lymph nodes with a margin. The boost PTV (PTVB) contained prostate and
seminal vesicles with a margin. The total prescription dose was Gy ( Gy to PTVP and an additional Gy
to PTVB; Gy/fraction). Three plans were generated for each PTV: Multiple-field IMRT, one-arc RapidArc
(1ARC), and two-arc RapidArc (2ARC).
Results: In the primary IMRT with PTVP, average mean doses to bladder, rectum and small bowel were lower by
%, % and %, respectively, than