Proton Radiotherapy for Childhood Ependymoma: Initial Clinical Outcomes and Dose Comparisons

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• 作者：Shannon M. MacDonald ; Sairos Safai ; Alexei Trofimov ; John Wolfgang ; Barbara Fullerton ; Beow Y. Yeap ; Thomas Bortfeld ; Nancy J. Tarbell ; Torunn Yock
• 关键词：Ependymoma ; Pediatric brain tumors ; Proton beam radiation
• 刊名：International Journal of Radiation Oncology*Biology*Physics
• 出版年：2008
• 期刊代码：136_03603016
• 类别：med
• 出版时间：15 July 2008
• 卷：71
• 期：4
• 页码：979-986
• 文件大小：3811 K

摘要

In this paper, the micro-mechanics of electrical conductivity increases of poly(vinylidene fluoride) (PVDF) samples induced by KrF excimer laser was analyzed by Raman spectra and infrared spectra. The irradiated layer of the samples was observed by the method of Raman mapping and scanning electron microscope and the thickness of the conducting layer of PVDF samples was determined to be about 6.5 μm. Moreover, the surface microstructure of the irradiated PVDF samples was discussed in the light of scanning electron microscope, Raman spectra and Raman mapping.