Ching-Jiang Chen

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We present an analytical and experimental study of split shape dose calculation correction by adjusting the position of the round leaf end position in an intensity-modulated radiation therapy treatment planning system. The precise light field edge position (Xtang.p ) was derived from 50% of the central axis dose created by nominal light field using geometry(More)
Recently, malicious programs and targeted attacks in social engineering have proved that lots of traditional outer protection schemes cannot prevent these threats. According to the principles of ISO27001 and BS7799 standards, an automatic information security protection system named "SecConfig" (security configuration) is proposed in this paper for the(More)
This study described how to identify the coincidence of desired planning isodose curves with film experimental results by using a mathematical fractal dimension characteristic method to avoid the errors caused by visual inspection. These film's isodose curves were acquired to Osiris (Geneva University Hospital) software to aim directly on single interested(More)
PURPOSE This study describes how to identify the coincidence of desired planning isodose curves with film experimental results by using a mathematical fractal dimension characteristic method to avoid the errors caused by visual inspection in the intensity modulation radiation therapy (IMRT). METHODS AND MATERIALS The isodose curves of the films delivered(More)
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