Purpose: To correct for errors due to metallic implants in CT‐based patient simulation imaging. To quantify the impact of these imaging errors on treatment planning for 3D conformal and intensity modulated proton therapy (IMPT). Methods: Several methods were developed to correct for imaging errors in treatment plans for patients with metallic implants. CT metal artifact reduction methods were applied, the implant sizes were verified using CT‐based radiographs instead of reconstructed images, and implant‐speci…
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