نتایج جستجو برای: stereotactic body radiotherapy

تعداد نتایج: 794243  

2017
Xiaofei Zhu Fuqi Li Xiaoping Ju Fei Cao Yangsen Cao Fang Fang Shuiwang Qing Yuxin Shen Zhen Jia Huojun Zhang

The role of stereotactic body radiation therapy for the elderly with advanced or medically inoperable pancreatic cancer was still debated. Therefore, we evaluated the value of stereotactic body radiation therapy and its association with survival of those patients. A total of 417 elderly patients were retrospectively reviewed from 2012 to 2015. Overall survival (OS), progression-free survival (P...

Journal: :Journal of Medical Imaging and Radiation Oncology 2020

Journal: :European review for medical and pharmacological sciences 2012
S Ursino C Greco F Cartei C Colosimo A Stefanelli B Cacopardo M Berretta F Fiorica

Historically radiotherapy has always played a limited role for the treatment of HCC due to the low tolerance of the liver and the subsequent risk of radiation induced liver disease (RILD). Technologist advancements in radiation planning and treatment delivery such as Stereotactic Body Radiotherapy (SBRT) combined with Image Guided Radiotherapy (IGRT) has allowed us to further increase tumor dos...

2016
Martin J. Menten Martin F. Fast Simeon Nill Cornelis P. Kamerling Fiona McDonald Uwe Oelfke

BACKGROUND AND PURPOSE There are concerns that radiotherapy doses delivered in a magnetic field might be distorted due to the Lorentz force deflecting secondary electrons. This study investigates this effect on lung stereotactic body radiotherapy (SBRT) treatments, conducted either with or without multileaf collimator (MLC) tumor tracking. MATERIAL AND METHODS Lung SBRT treatments with an MR-...

Journal: :iranian journal of medical physics 0
tayeb allahverdi pourfallah biochemistry and biophysics dept., faculty of medicine, mazandaran university of medical sciences, sari, iran

introduction polymer gel dosimeters offer a practical solution to 3d dose verification for conventional radiotherapy as well as intensity-modulated and stereotactic radiotherapy. in this study, egsnrc calculated and pagat polymer gel dosimeter measured dose profiles from single shot irradiation with 18 mm collimator of gamma knife in homogeneous and inhomogeneous phantoms were compared with eac...

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