IMRT 2018

What Are Typical Treatment Goals?

▪ Target goal

▪ Target Cost Function

▪ Achieve a sufficient target dose

▪ Maximize minimum dose in target

▪ Normal tissue goals

▪ Normal tissue Cost Function

▪ Do not exceed acceptable doses in OARs

▪ Minimize maximum or mean dose in OARs

▪ Conformality goal

▪ Conformality Cost Function

▪ Target dose should be conformal, spare generic normal tissue

▪ Minimize maximum dose to rings around target

▪ Homogeneity goal

▪ Homogeneity Cost Function

▪ No large or excessive hot spots in the target

▪ Minimize maximum dose in target

min ( ) = −max[− ]