Dosimetric impact of commercial CT metal artifact reduction algorithms and a novel in‐house algorithm for proton therapy of head and neck cancer
Medical Physics2020Vol. 48(1), pp. 445–455
Citations Over Time
Daniela Branco, Stephen F. Kry, Paige A. Taylor, Xiaodong Zhang, John Rong, Steven J. Frank, D Followill
Abstract
Computed tomography metal artifacts negatively impacted proton dose distributions on all five targets analyzed. The commercial MAR solutions performed inconsistently throughout all targets compared to the metal-free baseline. A lack of CTV coverage and an increased number of hotspots were observed throughout all commercial solutions. Dose distribution errors were related to the proximity to the artifacts, demonstrating the inability of commercial techniques to adequately correct severe artifacts. In contrast, AMPP consistently showed dose distributions that best matched the baseline, likely because it makes use of accurate HU information, as opposed to interpolated data like commercial algorithms.
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