نتایج جستجو برای: normal tissue complication probability

تعداد نتایج: 1618256  

2018
Hubert S. Gabryś Florian Buettner Florian Sterzing Henrik Hauswald Mark Bangert

Purpose The purpose of this study is to investigate whether machine learning with dosiomic, radiomic, and demographic features allows for xerostomia risk assessment more precise than normal tissue complication probability (NTCP) models based on the mean radiation dose to parotid glands. Material and methods A cohort of 153 head-and-neck cancer patients was used to model xerostomia at 0-6 mont...

Journal: :Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2016
Gregory Smyth Philip M Evans Jeffrey C Bamber Henry C Mandeville Liam C Welsh Frank H Saran James L Bedford

BACKGROUND AND PURPOSE To evaluate non-coplanar volumetric modulated arc radiotherapy (VMAT) trajectories for organ at risk (OAR) sparing in primary brain tumor radiotherapy. MATERIALS AND METHODS Fifteen patients were planned using coplanar VMAT and compared against non-coplanar VMAT plans for three trajectory optimization techniques. A geometric heuristic technique (GH) combined beam scorin...

2016
Y. Jessica Huang Alexis Harrison Vikren Sarkar Prema Rassiah-Szegedi Hui Zhao Martin Szegedi Long Huang Brent Wilson David K. Gaffney Bill J. Salter

PURPOSE This is a proof-of-principle study investigating the feasibility of using late gadolinium enhancement magnetic resonance imaging (LGE-MRI) to detect left atrium (LA) radiation damage. METHODS AND MATERIALS LGE-MRI data were acquired for 7 patients with previous external beam radiation therapy (EBRT) histories. The enhancement in LA scar was delineated and fused to the computed tomogra...

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