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Impact of collimator leaf width on stereotactic radiosurgery and 3D conformal radiotherapy treatment plans by H.Dale Kubo; Richard B Wilder; Conrad T.E Pappas is a Medicine article available to read on EtoBox.

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## Purpose: The authors undertook a study to analyze the impact of collimator leaf width on stereotactic radiosurgery and 3D conformal radiotherapy treatment plans. Methods and Materials: Twelve cases involving primary brain tumors, metastases, or arteriovenous malformations that had been planned with BrainLAB's conventional circular collimator-based radiosurgery system were re-planned using a ␤-version of BrainLAB's treatment planning software that is compatible with MRC Systems' and BrainLAB's micro-multileaf collimators. These collimators have a minimum leaf width of 1.7 mm and 3.0 mm, respectively, at isocenter. The clinical target volumes ranged from 2.7-26.1 cc and the number of static fields ranged from 3-5. In addition, for 4 prostate cancer cases, 2 separate clinical target volumes were planned using MRC Systems' and BrainLAB's micro-multileaf collimators and Varian's multileaf collimator: the smaller clinical target volume consisted of the prostate gland and the larger clinical target volume consisted of the prostate and seminal vesicles. For the prostate cancer cases, treatment plans were generated using either 6 or 7 static fields. A "PITV ratio," which the Radiation Th

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Author

H.Dale Kubo; Richard B Wilder; Conrad T.E Pappas

Publisher

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

Published

1999

Language

EN

Field

Medicine (Health Sciences)