| Byline | Chi-Wei Hsu1, Wen-Shan Liu1, His-Chang Chang1,3, Keh-Shih Chuang2, Tzong-Jer Chen2, Ching-Tsorng Tsai3 
1. Department of Radiation Oncology, Chang-Shan Medical University Hospital, Taichuang, Taiwan 402 
2. Institute of Nuclear Science, National Tsing-Hua University, Hsinchu, Taiwan  
300 
3. Computer Science and Information Engineering Department, Tunghai University, Taichuang, Taiwan 
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