نتایج جستجو برای: stereotactic

تعداد نتایج: 11615  

Background and Aim: Numerous efforts over the past century have been performed. Various innovation techniques are increasingly gaining attention and gradually established the foundation of recent significant developments in the world of neurosurgery, among which varied stereotactic neuro-navigation designs and other novel emerging systems are being quotidian developed. This narrative review ai...

Journal: :iranian journal of medical physics 0
a. khoshbin khoshnazar assistant professor, medical physics dept., golestan university of medical sciences, golestan, iran m. t. bahreyni toosi professor, medical physics research center, bu-ali research institute, mashhad university of medical sciences, mashhad, iran. a. hashemian assistant professor, medical physics research center, bu-ali research institute, mashhad university of medical sciences, mashhad, iran. m. h. bahreyni toosi professor, medical physics research center, bu-ali research institute, mashhad university of medical sciences, mashhad, iran. r. salek assistant professor, radiation oncology dept., imam reza hospital, mashhad university of medical sciences, mashhad, iran

introduction:  stereotactic  radiosurgery  is  a  technique  for  the  treatment  of  intracranial  lesions  with  highly  collimated  x-ray  beam.  linac-based  radiosurgery  is  currently  performed  by  two  techniques:  couch or pedestal mounted. in the first technique, a device is required to affix patient's head to a couch  and  moreover  to  translate  it  accurately.  structure  of...

Journal: :Neuro endocrinology letters 2014
Hana Malikova Roman Liscak Iva Latnerova Khumar Guseynova Martin Syrucek Robert Pytlik

OBJECTIVES Stereotactic biopsy is a suitable method for sampling intrinsic brain lesions. Although this method is considered to be a safe procedure, some risk of complications still exists. The aim of the study was to retrospectively assess the morbidity and mortality of MRI-guided stereotactic biopsy of lesions which were histologically proven to be brain lymphoma. METHODS We retrospectively...

Journal: :Stereotactic and functional neurosurgery 2016
Wolfgang Hamel Johannes A Köppen Marwan Hariz Paul Krack Christian K E Moll

During the 1950s through the 1970s, Hans Orthner and Fritz Roeder, two German neurologists from Göttingen, developed a sophisticated technique to perform functional stereotactic surgery with outstanding accuracy. They introduced direct air ventriculography performed in the same surgical session as the ablative stereotactic procedure. For individualized surgical targeting, Orthner prepared a ste...

2016
Tayfun hakan Fugen VarDar aker

adequate therapy (34). Stereotactic surgery started with the Horsley-Clarke apparatus in 1908 (14). After the introduction of stereotactic surgery in human patients by Spiegel and Wycis in 1947, this approach has been used safely and effectively to obtain tissue diagnosis for intracranial lesions. There are many papers establishing the issues related to the safety, accuracy and diagnostic yield...

Journal: :Bulletin du cancer 2013
Ronan Tanguy Philippe Métellus Françoise Mornex Jean-Jacques Mazeron

Brain metastases management is still controversial even though many trials are trying to define the respective roles of neurosurgery, whole-brain radiotherapy, single-dose stereotactic radiotherapy and fractionated stereotactic radiotherapy. In this article, we review data from trials that examine the role of radiosurgery and fractionated stereotactic radiotherapy in the management of brain met...

2000
DAVID I. ROSENTHAL ELI GLATSTEIN Harold C. Simmons

Hypofractionation has been a recurring issue during the near century-long history of radiation oncology. Coutard first introduced protracted dose-fraction regimens that uniquely allowed for the control of “deep” tumors. Subsequent studies have consistently shown that hypofractionation leads to an increase in complication rates and a paradoxical decrease in cure rates. There have, nonetheless, b...

Journal: :Japanese journal of clinical oncology 2011
Shunsuke Onodera Hidefumi Aoyama Norio Katoh Hiroshi Taguchi Kouichi Yasuda Daisuke Yoshida Ken Surtherland Ryusuke Suzuki Masayori Ishikawa Bengua Gerard Shunsuke Terasaka Hiroki Shirato

OBJECTIVE To investigate the outcome of linac-based fractionated stereotactic radiotherapy over the last 10 years for intracranial skull base benign meningiomas in patients who were inoperable, who had residual tumors with some components of high mitotic index after surgery and who experienced relapse of the tumor. METHODS Twenty-seven patients with intracranial skull base benign meningiomas ...

Journal: :The oncologist 1996
Rosenthal Glatstein

Hypofractionation has been a recurring issue during the near century-long history of radiation oncology. Coutard first introduced protracted dose-fraction regimens that uniquely allowed for the control of "deep" tumors. Subsequent studies have consistently shown that hypofractionation leads to an increase in complication rates and a paradoxical decrease in cure rates. There have, nonetheless, b...

2012
Seil Sohn Chun Kee Chung

OBJECTIVE The incidence and prevalence of spinal metastases are increasing, and although the role of radiation therapy in the treatment of metastatic tumors of the spine has been well established, the same cannot be said about the role of stereotactic radiosurgery. Herein, the authors present a systematic review regarding the value of spinal stereotactic radiosurgery in the management of spinal...

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