Publications by authors named "F el Hefnawi"

Objective: The optimal treatment for recurrent and residual gangliogliomas remains unclear. The aim of this study was to evaluate the safety and efficacy of stereotactic radiosurgery (SRS) in the management of patients with recurrent or residual intracranial ganglioglioma.

Methods: This retrospective multicenter study involved patients managed with SRS for ganglioglioma.

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Objective: Isocitrate dehydrogenase (IDH) mutation status is recommended used for diagnosis and prognostication of glioblastoma patients. We studied efficacy and safety of stereotactic radiosurgery (SRS) for patients with recurrent IDH-wt glioblastoma.

Methods: Consecutive patients treated with SRS for IDH-wt glioblastoma were pooled for this retrospective observational international multi-institutional study from institutions participating in the International Radiosurgery Research Foundation.

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A new method is presented to identify Electrocardiogram (ECG) signals for abnormal heartbeats based on Prony's modeling algorithm and neural network. Hence, the ECG signals can be written as a finite sum of exponential depending on poles. Neural network is used to identify the ECG signal from the calculated poles.

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During the period June 1979--May 1981, 1582 diagnostic and operative laparoscopic procedures were performed at Al-Azhar University Endoscopy Unit and during field visits to several hospitals in Egypt, Sudan and Mauritania. Ninety-nine of these had had previous lower abdominal surgery. Laparoscopy was performed on 93 of these patients using a modified technique of laparoscopy.

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