Mohamed Abdelmoez, ElBadry M. Zahran, A. Attar, Khaled, El-Shahat
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引用次数: 0
摘要
门脉成像仪系统由于可以代替胶片作为放射治疗的新手段，在许多直线加速器模型中作为验证系统被广泛应用。门户成像系统具有良好的特性，可以使用成像模型进行验证，现在具有更好的治疗计算算法，可用于一些新放疗技术的剂量评估的预处理验证，以及现代治疗输送机和输送方式，以提高使用EPID的传统质量保证(QA)标准的可能性。本研究使用瓦里安直线加速器(UNIQUETM模型)进行，该加速器的单光子能量为6 MeV，剂量率从100 MU/min开始。600 MU/min，配备portal成像仪系统aS500，标准双耳离子室绝对剂量测定系统TM30013, MP3水幻影和UNIDOS E TM
EVALUATION STUDY FOR ELECTRONIC PORTAL IMAGER SYSTEM DEVICE (EPID) AS QUALITY ASSURANCE AND DOSIMETRY TOOL FOR MEDICAL LINEAR ACCELERATOR MACHINE
Portal imager system now is widely attached as verification system in many models from linear accelerator due to may be used for treatment verification instead of film in as new ear for radiotherapy. The portal imager system has good properties for verification using imaging model and now with better treatment calculation algorithms for use as pretreatment verification for dose evaluation for some new radiotherapy techniques, and modern treatment delivery machines and modes of delivery, to improve possible for using the EPID the conventional Quality Assurance (QA) standards. The current study was done used linear accelerator Varian (model UNIQUETM), which has single photon energy 6 MeV with different dose rate steps start from 100 MU/min. to 600 MU/min equipped by portal imager system aS500, absolute dosimetry system for standard nbilarbilac (farmer Ion chamber TM30013, MP3 water phantom and UNIDOS E TM
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