نتایج جستجو برای: gafchromic film stereotactic radiotherapy

تعداد نتایج: 159884  

Journal: :The Laryngoscope 2011
Sami Tanbouzi Husseini Enrico Piccirillo Abdelkader Taibah Carlo T Paties Roberto Rizzoli Mario Sanna

OBJECTIVES/HYPOTHESIS A relation between conventional radiotherapy and the development of intracranial neoplasma is well known, but radiation-associated tumor following stereotactic radiotherapy of vestibular schwannoma is underestimated. In this article we will study this relation by doing a complete literature review on all the malignant intracranial tumors that appeared following radiosurger...

Journal: :The Permanente journal 2006
Joseph C T Chen Michael R Girvigian

Stereotactic radiosurgery and fractionated stereotactic radiotherapy represent an increasingly important option in the treatment of central nervous system disease. In this article, we discuss indications for stereotactic radiosurgery and review results reported in the medical literature.

2007
Martina Fuss Eva Sturtewagen Carlos De Wagter Dietmar Georg

The suitability of radiochromic EBT film was studied for high-precision clinical quality assurance (QA) by identifying the dose response for a wide range of irradiation parameters typically modified in highly-conformal treatment techniques. In addition, uncertainties associated with varying irradiation conditions were determined. EBT can be used for dose assessment of absorbed dose levels as we...

2017
Grzegorz Zwierzchowski Grzegorz Bieleda Janusz Skowronek

Background Fast and easily repeatable methods for commissioning procedures for brachytherapy (BT) treatment planning systems (TPS) are needed. Radiochromic film dosimetry with gamma analysis is widely used in external beam quality assurance (QA) procedures and planar film dosimetry is also increasingly used for verification of the dose distribution in BT applications. Using the gamma analysis m...

Journal: :journal of biomedical physics and engineering 0
m t bahreyni toossi medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iran f khorshidi medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) m ghorbani medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) n mohamadian medical physics research center, faculty of medicine, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) d davenport comprehensive cancer centers of nevada, las vegas, nevada, usaسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

background: ebt and ebt3 radiochromic films have been used in radiotherapy dosimetry for years. objective: the aim of the current study is to compare ebt and ebt3 radiochromic films in dosimetry of radiotherapy fields for treatment of parotid cancer. methods: calibrations of ebt and ebt3 films were performed with identical setups using a 6 mv photon beam of a siemens primus linac. skin dose was...

2016
Kengo Ohta Masashi Shimohira Taro Murai Junichi Nishimura Hiromitsu Iwata Hiroyuki Ogino Takuya Hashizume Yuta Shibamoto

The aim of this study was to describe our initial experience with a gold flexible linear fiducial marker and to evaluate the safety and technical and clinical efficacy of stereotactic body radiotherapy using this marker for malignant liver tumors. Between July 2012 and February 2015, 18 patients underwent percutaneous fiducial marker placement before stereotactic body radiotherapy for malignant...

2013
Akash Bijlani Giovanni Aguzzi David W. Schaal Pantaleo Romanelli

OBJECTIVE To describe and synthesize the current stereotactic radiosurgery (SRS) and stereotactic body radiation therapy (SBRT) cost-effectiveness research to date across several common SRS and SBRT applications. METHODS This review was limited to comparative economic evaluations of SRS, SBRT, and alternative treatments (e.g., other radiotherapy techniques or surgery). Based on PubMed searche...

2017
James W. Snider Yildirim Mutaf Elizabeth Nichols Andrea Hall Patrick Vadnais William F. Regine Steven J. Feigenberg

Accelerated partial breast irradiation has caused higher than expected rates of poor cosmesis. At our institution, a novel breast stereotactic radiotherapy device has demonstrated dosimetric distributions similar to those in brachytherapy. This study analyzed comparative dose distributions achieved with the device and intensity-modulated radiation therapy accelerated partial breast irradiation....

Journal: :Tumori 2011
Ernesto Maranzano Paola Anselmo Michelina Casale Fabio Trippa Sandro Carletti Massimo Principi Fabio Loreti Marco Italiani Claudia Caserta Cesare Giorgi

AIMS AND BACKGROUND Few clinical data exist concerning normal brain tissue tolerance to re-irradiation. The present study evaluated long-term outcome of 22 recurrent glioblastoma patients re-irradiated with radiosurgery or fractionated stereotactic radiotherapy. METHODS Twenty-two patients were treated with radiosurgery (13, 59%) or fractionated stereotactic radiotherapy (9, 41%) for 24 lesio...

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