ProsTOX estimates DELAYED urinary tract symptoms. ACUTE self limiting symptoms resolve at the same rate as IMRT the longer form of External Beam Radiotherapy [EBRT]
ProsTOX: LOW score 5% chance of delayed symptoms, put another way 95% chance of no delayed symptoms, The HIGH score is a 15% chance of delayed symptoms or 85% chance of no delayed symptoms. It is possible you misheard the oral (unwritten) spiel or the doc is ignorant.
The interval between treatments: 2x, 1x/week may mitigate the issue rather than receiving standard alternate days for five treatments?
Permanent seeds provides the optimal dose of radiation; whereas EBRT of any sort has to be suboptimal because the converging beams must
go through healthy tissue. 7 3+4 is also being surveilled as well so you should not necessarily be rushed into treatment. Go to PCRI.org and look up their YOU-TUBE videos on various Gleason scores.