VMAT Optimization and Dose Calculation in the Presence of Metallic Hip Prostheses.

ABSTRACT:

Introduction

This research quantifies and compares the effect of hip prostheses on dose distributions calculated using collapsed cone convolution superposition and Monte Carlo (with and without correcting for the density of the implant and surrounding tissues). The use of full volumetric modulated arc therapy arcs versus volumetric modulated arc therapy arcs avoiding the hip implants (skip arcs) was also studied.

Materials and methods

Six prostate patients with hip prostheses were included in this study. The hip prostheses and the streaking artifacts on the computed tomography images were contoured by a single physician, and full volumetric modulated arc therapy arcs were created in the Pinnacle3 TPS. Copies of each plan were made, and the doses were recalculated with the de

SUBMITTER: Parenica HM 

PROVIDER: S-EPMC6887823 | biostudies-literature | 2019 Jan-Dec

REPOSITORIES: biostudies-literature