When treating an intact whole breast using breath-hold technique with a planned electron boost, do you generate a separate plan for the boost with a free-breathing scan, or plan the electron boost on the breath-hold scan, but treat free-breathing?  

It is our practice to acquire a free breathing and breath hold scan. I evaluate the boost plan on the free breathing. The "plan sum" is on the breath hold, but I would be reluctant to not have the free breathing for evaluation of dose, particularly on the left side, as the cardiac displacement may s...