I first learned of this type of radiation therapy when I was diagnosed with breast cancer last March 07. Because of the location (deep) and several other factors, I qualified for the Mammosite radiation -- which is the same type of treatment as the brachytherapy. I had treatments 2X day for only 5 days -- as opposed to 33 days. The comments I heard were that it was a good option not only for the length of the treatment but because you have the opportunity to zero in much closer to the problem area, rather than radiating a much larger area. I was pleased with the process and the fact that it was complete in a week. I'm only 1 year after surgery, but so far everything looks good. I hope that the brachytherapy works well.