What small bowel constraint do you use when planning standard/moderately hypofx EBRT for prostate cancer?

For conventional fxn (1.8 Gy)

• Max dose 52 Gy per RTOG Prostate Consensus Group (PMID:18947938)
  • Personally, use 50 Gy
• V45 <195 cc per QUANTEC
  
  • Personally, push lower to <135 cc

For moderate hypofxn (2.5 Gy)

• V40 <1% per Duke constraints (PMID:28244406)

To the best of my knowledge, CHHip (60 Gy/...