1、RadiobiologyPart TwoBME College Sherman Sheen(辛辛学学刚)The Physics of RadiologyFRACTIONATION the total dose,the number of fractions,the dose per fraction,and the overall treatment time ISORESPONSE CURVES THE OXYGEN EFFECT oxygen-a sensitizing agent The oxygen enhancement ratio(OER)ISOEFFECT CURVES AND
2、NOMINAL STANDARD DOSE(NSD)the number of fractions Nthe overall time TTime Dose and Fractionation Factors(TDF)a series of time,dose,fractionationTDF factors:The Oxygen EffectEXAMPLES OF THE APPLICATION OF RADIOBIOLOGY TO RADIOTHERAPY optimum treatment for a given tumor or type of tumor in patients High LET Radiation and the Oxygen EffectCHOICE OF FRACTIONATION SURVIVAL OF PATIENTS SUMMARY OF THE APPLICATION OF RADIOBIOLOGY TO RADIOTHERAPY SUMMARY OF THE APPLICATION OF PHYSICS TO RADIOLOGY