32 MCO in VMAT treatment planning for locally advanced head and neck cancer

Introduction. Efficacy of inverse planning is becoming increasingly important for advanced radiotherapy techniques, and especially for head and neck cancer to decrease radiation therapy toxicity. However, the inverse planning process can create a suboptimal plan despite meeting all constraints. Multicriteria optimization (MCO) may improve doses at organs at risk (OARs) and provide better treatment planning without being time consuming. The aim of this study was therefore to evaluate the benefit of VMAT with multi-criteria optimization (MCO) in RayStation (v6.1.1.2& v8A, RaySearch Laboratories, Sweden) for head and neck cancer patients and compare the DVH difference between MCO VMAT plans and standard optimization (SO) VMAT plans.

Source: Physica Medica: European Journal of Medical Physics - November 30, 2019 Category: General Medicine Authors: J. Rolland, B. Farnault, P. Fau, A.Tallet, V. Favrel Source Type: research