(OA48) Prospective In-Silico Quality Assurance Study of Contouring Target Volumes in Thoracic Tumors Within a Cooperative Group Setting

Target delineation variability is a significant technical impediment in multi-institutional, including cooperative group, trials which employ intensity modulated radiotherapy (IMRT), as there is real potential for clinically meaningful variance in radiotherapy plans submitted to future studies. However, little is known how best to optimize protocols to account for multimodality imaging (e.g. PET, 4DCT) in the treatment planning process. The goal of this study is to determine the variability of target delineation among observers from different institutions as part of SWOG Radiotherapy Committee's multi-institutional in-silico quality assurance study of target delineation in patients with superior sulcus tumors.

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