Dosimetric effects of dose calculation grid size on the epidural space dose

Introduction: The epidural disease progression is the most common pattern of failure after spine stereotactic body radiotherapy. The aim of this study was to clarify the effect of the dose calculation grid size (CGS) during volumetric modulated arc therapy planning on the dose to the epidural space target. Materials and Methods: In the planning, the volume obtained by subtracting the planning organ at risk volume (PRV) of the spinal cord and/or cauda equina from the planning target volume (PTV) was defined as the PTVeval.

Source: Medical Dosimetry - June 6, 2020 Category: Radiology Authors: Hidetoshi Shimizu, Koji Sasaki, Hiroshi Tanaka, Takahiro Aoyama, Hiroyuki Tachibana, Yutaro Koide, Tohru Iwata, Tomoki Kitagawa, Takeshi Kodaira Tags: Research Article Source Type: research