Applying voxel-based analysis to oropharyngeal cancer proton therapy patients: a correlation study on radiation-induced acute dysphagia
Authors
Qianxia Wang
Alexander Stanforth
William Andrew LePain
Edgar Gelover
Haijian Chen
Mingyao Zhu
Katja M. Langen
Mark McDonald
James Edward Bates
Stella Flampouri
Abstract
Background: Voxel-based analysis (VBA) is an analytic approach to evaluate correlations between local dose and the development of different toxicities. DVHs are used for toxicity prediction as well. Compared with DVH, no contours are required for VBA technique and results tell specific voxels that may be related to the toxicity instead of the whole contoured area. The VBA has been used on different cancer sites and for different toxicities. Most of these studies included patients treated with photon, all published studies were based on planned dose and VBA tools used were developed in house. In our study, patient cohort were treated with proton, our VBA tool was developed based on RayStation and doses fed to the VBA tool were delivered doses with constant and two variable RBE models.
