It is demonstrated that it is feasible to perform such a multi‐institute comparison study. Treatment plan inter‐comparisons can be performed on the listed dosimetric matrices. We plan to perform the analysis on more cases and present update during ASTRO meeting. Comprehensive statistical analysis with tumor grouped by size, type and location can be performed to evaluate the advantage and disadvantage of each modality when larger patient dataset becomes available.
Author Disclosure: A. Liu, None; N. Agazaryan, None; C. Yu, None; H. Han, None; T. Schultheiss, None; J. Wong, None.