Effect of dental metal artifact conversion volume on dose distribution in head-and-neck volumetric-modulated arc therapy.

ABSTRACT:

Purpose

During treatment planning for head-and-neck volumetric-modulated arc therapy (VMAT), manual contouring of the metal artifact area of artificial teeth is done, and the area is replaced with water computed tomography (CT) values for dose calculation. This contouring of the metal artifact areas, which is performed manually, is subject to human variability. The purpose of this study is to evaluate and analyze the effect of inter-observer variation on dose distribution.

Methods

The subjects were 25 cases of cancer of the oropharynx for which VMAT was performed. Six radiation oncologists (ROs) performed metal artifact contouring for all of the cases. Gross tumor volume, clinical target volume, planning target volume (PTV), and oral cavity were evaluated. The contouring of

SUBMITTER: Kitagawa K 

PROVIDER: S-EPMC7769385 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature