Tumor volumetric analysis guide: Horos software

Three-Dimensional Volumetric Assessment of Resected Gliomas Assisted by Horos Imaging Software: Video Case Series of Postoperative Tumor Analyses
Authors: Yasmeen Elsawaf, Stephanie Anetsberger, Sabino Luzzi, Samer K. Elbabaa
Abstract
Horos (LGPL 3.0; GNU Lesser General Public License, Version 3) is a free, open-source medical image viewer with a user-friendly interface and three-dimensional (3D) volumetric rendering capabilities. We present the use of Horos software as a postoperative tool for residual tumor volume analysis in children with high-grade gliomas (HGG). This is a case series of two pediatric patients with histologically confirmed high-grade gliomas who underwent tumor resection as definitive treatment from June 2011 to June 2019. Volumetric data and extent of resection were obtained via region of interest-based 3D analysis using Horos image-processing software. Horos software provides increased accuracy and confidence in determining the postoperative volume and is useful in assessing the impact of residual volume on outcomes in patients with high-grade gliomas. Horos software is a highly effective means of volumetric analysis for the postoperative analysis of residual volume after maximal safe resection of high-grade gliomas in pediatric patients.
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