Hi @duxx1234 if you are having 30 then yes you are having a boost. The first 25 treatments treat the whole breast tissue whereas the last 5 target where the lump was to give it an extra 'boost'. You may be in the same position as you are now or it may be changed slightly, they may or not put an extra attachment onto the machine it just depends on the technique they are using for your particular case. Hope that helps! Congrats on being on the last part of your triathlon and yay for being almost half way through radiation xx