Modern Bt Techniques - Florence 2016

“Aimed” versus “Planned”:

For the example of prostate and considering the published papers and recommendations, the majority of these refer as “planned” doses, individual prescription, the achieved D 90 values for the PTV. Those values are more stable regarding delineation inaccuracies and resolution of the calculation grid or number of sample points than the minimum dose values. Thus we have in general the “aimed” D value for the PTV 90 (institutional/study protocol value) and the “planned” D 90 value, that is the value that is really achieved (and probably delivered) in the individual treatment planning process and becomes the individual dose prescription.