JournaloftheKoreanPhysicalSociety,Vol.66,No.2,January2015,pp.301313EvaluationofBreathingPatternsforRespiratory-gatedRadiationTherapyUsingtheRespirationRegularityIndexKwang-HoCheong,MeYeonLee,Sei-KwonKang,Jai-WoongYoon,SoAhPark,TaejinHwang,HaeyoungKim,KyoungJuKim,TaeJinHanandHoonsikBaeDepartmentofRadiationOncology,HallymUniversityCollegeofMedicine,Anyang431-070,Korea(Received3November2014)Despit...