Generation of prostate IMAT plans adaptable to the inter-fractional changes of patient geometry.

Phys Med Biol

Klinik und Poliklinik für Strahlentherapie, Universitätsklinikum Würzburg, Joseph-Schneider Str. 11, D-97080 Würzburg, Germany.

Published: April 2014

We present the results of 2-Step generation of adaptable IMAT plans for prostate carcinoma cases. The 2-Step IMAT plans show clinical and dosimetric equivalence to the reference SmartArc™-generated VMAT plans. The 2-Step plans are adapted to inter-fractional changes of prostate-rectum geometry using 2-Step adaptation rules for a cohort of ten adaptation cases. The adapted 2-Step IMAT plans show statistically significant improvement (Wilcoxon 1-tail p < 0.05) of target coverage and of rectum sparing when compared to isocenter relocated plans.

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http://dx.doi.org/10.1088/0031-9155/59/8/1947DOI Listing

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