Comparison of beam hardening effect of physical and enhanced dynamic wedges at bladder inhomogeneity using EBT3 film dosimeter
نویسندگان
چکیده
منابع مشابه
Monte Carlo study on beam hardening effect of physical wedges
Background: Physical wedges are still widely used as beam modifiers in external beam radiotherapy. However the presence of them in the beam trace may cause beam hardening which may not be considered in many treatment planning systems. The aim of this study is to investigate the beam hardening effect generated by physical wedges via different beam quality indexes as photon spectrum, half value l...
متن کاملMonte Carlo study on beam hardening effect of physical wedges
Irregular body contour and tumor volumes necessitate beam modi iers such as physical wedges to achieve a better uniformity of dose distribution (1‐3). With the increasing interest in intensity modulated radiation therapy (IMRT), using of physical wedges has been reduced for ield shaping. On the other hand, IMRT includes a small fraction of the overall treatment techniques for several reasons su...
متن کاملmonte carlo study on beam hardening effect of physical wedges
background: physical wedges are still widely used as beam modifiers in external beam radiotherapy. however the presence of them in the beam trace may cause beam hardening which may not be considered in many treatment planning systems. the aim of this study is to investigate the beam hardening effect generated by physical wedges via different beam quality indexes as photon spectrum, half value l...
متن کاملComparison of dosimetric characteristics of physical and enhanced dynamic wedges.
BACKGROUND Wedge filters can be used as missing tissue compensators or wedge pairs to alter the shape of isodose curves so that two beams can be angled with a small hinge angle at a target volume without creating a hotspot. AIM In this study the dosimetric properties of Varian Enhanced Dynamic Wedge (EDW) and physical wedges (PW) were analyzed and compared. MATERIALS AND METHODS Ionometric ...
متن کاملSmall field size dose-profile measurements using MAGIC- f polymer gel dosimeter and EBT3 film dosimeter
Introduction: In radiotherapy, treatment planning methods are evaluating and transforming every day, so precision in calculation and determination of dose delivery process is performing more important role in radiotherapy than past. In modern radiotherapy treatments, deramatically increase of small fields utilization, causes the polymeric gels has known as the most reliable dos...
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ژورنال
عنوان ژورنال: Journal of Cancer Research and Therapeutics
سال: 2017
ISSN: 0973-1482
DOI: 10.4103/0973-1482.206244