When using EBRT to deliver APBI, what dose do you prescribe and to what volume?

3DCRT APBI now has greater data supporting potential toxicity based on results of institutional series, prospective (RTOG), and now randomized data (late toxicity with RAPID). Whether this is related to technique, volumes, or fractionation (3.85 BID) is unclear.

For patients at our institution, we us...