نتایج جستجو برای: radiation necrosis

تعداد نتایج: 329274  

Journal: :iranian journal of neurology 0
mousa reza anbarloui department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran. seyed mohammad ghodsi department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran. alireza khoshnevisan department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran. masoud khadivi department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran. sina abdollahzadeh department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran. ahmad aoude department of neurosurgery, school of medicine, shariati hospital, tehran university of medical sciences, tehran, iran.

background: distinction between radiation necrosis and recurrence of intraparenchymal tumors is necessary to select the appropriate treatment, but it is often difficult based on imaging features alone. we developed an algorithm for analyzing magnetic resonance spectroscopy (mrs) findings and studied its accuracy in differentiation between radiation necrosis and tumor recurrence. m e t hod s :  ...

Journal: :iranian journal of nuclear medicine 2006
shahram dabiri oskooei alireza naseri farshad seyednezhad amir ghasemi jangjoo mohammad mohammadzadeh

introduction: 99mtc-mibi has been proposed for use as an imaging agent for various tumors, including breast cancer, lung cancer, lymphomas, melanomas and brain neoplastic lesions. brain tumors are very common and radiotherapy being major part of treatment following surgery. after radiotherapy, deteriorating clinical status can be due to either radiation necrosis or recurrent tumor. computed tom...

Journal: :iranian journal of toxicology 0
n tawakal department of anatomy, king edward medical university, lahore pakistan a mubarak khalid department of anatomy, king edward medical university, lahore pakistan u farooq khan lahore general hospital, lahor pakistan k raees ahmad department of biological sciences, university of sargodha, sargodha, pakistan asmatullsh department zoology, university of the punjab, lahor, pakistan

introduction:artifical sourace of radiation have increased worldwide average annual exposure of mankind and could especially affect rapidly dividing cells in gonads. since, radiation sensitivities of different components of primordial follicles, and the time required for their deplation have not been morphologically eatablished we decided to estimate the time required for depletion of primordia...

Journal: :Asia-Pacific Journal of Clinical Oncology 2013

Journal: :AJNR. American journal of neuroradiology 2015
S F Kralik C Y Ho W Finke J C Buchsbaum C P Haskins C-S Shih

BACKGROUND AND PURPOSE Proton radiotherapy has been increasingly utilized to treat pediatric brain tumors, however, limited information exists regarding radiation necrosis among these patients. Our aim was to evaluate the incidence, timing, clinical significance, risk factors, and imaging patterns of radiation necrosis in pediatric patients with brain tumors treated with proton radiation therap...

2016
Hongqing Zhuang Yi Zheng Junjie Wang Joe Y. Chang Xiaoguang Wang Zhiyong Yuan Ping Wang

In this study, we examined the factors contributing to brain radiation necrosis and its predictors of patients treated with Cyberknife radiosurgery. A total of 94 patients with primary or metastatic brain tumours having been treated with Cyberknife radiotherapy from Sep. 2006 to Oct. 2011 were collected and retrospectively analyzed. Skull based tracking was used to deliver radiation to 104 targ...

Alireza Naseri Amir Ghasemi Jangjoo Farshad Seyednezhad Gholamreza Seyedoskooei Mohammad Mohammadzadeh Shahram Dabiri Oskooei

Introduction: 99mTc-MIBI has been proposed for use as an imaging agent for various tumors, including breast cancer, lung cancer, lymphomas, melanomas and brain neoplastic lesions. Brain tumors are very common and radiotherapy being major part of treatment following surgery. After radiotherapy, deteriorating clinical status can be due to either radiation necrosis or recurrent tumor. Comput...

Journal: :International journal of radiation oncology, biology, physics 2015
Mark W McDonald Okechukwu R Linton Cynthia S J Calley

PURPOSE We evaluated patient and treatment parameters correlated with development of temporal lobe radiation necrosis. METHODS AND MATERIALS This was a retrospective analysis of a cohort of 66 patients treated for skull base chordoma, chondrosarcoma, adenoid cystic carcinoma, or sinonasal malignancies between 2005 and 2012, who had at least 6 months of clinical and radiographic follow-up. The...

2016
Hongqing Zhuang Xiangkun Yuan Dayong Sun Jianliang Bian Joe Y. Chang Zhiyong Yuan Ping Wang

The case study reported on acquired bevacizumab resistance in one patient receiving re-treatment with bevacizumab following radiation brain necrosis progression after bevacizumab was discontinued. This case offers novel and additional insight for bevacizumab treatment. Low-dose bevacizumab is effective for radiation brain necrosis, and radiation brain necrosis may progress after bevacizumab dis...

Journal: :Nihon Kikan Shokudoka Gakkai Kaiho 1986

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