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Planning Target Volumes for Cervix Cancer Radiotherapy using a Modified Convex Hull Technique by V. Kelly; J. Xie; K. Lim; K. Brock; A. Lundin; H. Rehbinder; A. Fyles; D. Jaffray; M. Milosevic; Y. Cho is a Medicine article available to read on EtoBox.

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has been limited by toxicity to intraperitoneal organs, preventing delivery of sufficient dose to micro metastases. Newer intensity modulated radiation techniques such as Tomotherapy (Tomo) can often deliver a greater dose to target structures while better avoiding normal tissues. This study is a dosimetric comparison of the Tomo and two-field techniques for WART with the hypothesis that Tomo can deliver more homogeneous dose coverage of the peritoneum while minimizing irradiation of normal tissues. Materials/Methods: The CT scans (abdomen and pelvis) of five female patients' status post hysterectomy were obtained between April 2008 and January 2009. Planning target volume (PTV) and organs at risk (OAR) were contoured using Pinnacle software. For each patient a Tomo plan for WART was generated using the Helical IMRT technique on Hi-Art software and a traditional two-field AP/PA plan was generated using the Parallel Opposed Pair technique on the Pinnacle software. Plans were optimized to deliver 30 Gy to the PTV (peritoneal cavity) while minimizing the dose delivered to the liver, kidneys, and spinal cord. The plans were compared using data from the dose-volume histograms, including

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Author

V. Kelly; J. Xie; K. Lim; K. Brock; A. Lundin; H. Rehbinder; A. Fyles; D. Jaffray; M. Milosevic; Y. Cho

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0360-3016)

Published

2009

Language

EN

Field

Medicine (Health Sciences)