Breast Cancer Fighting Bra for brachia-therapy?

check out this news video clip I found on cnn.com - 

http://www.cnn.com/video/#/video/tech/2009/11/14/intv.bra.fights.cancer.cnn

apparently, it is made of a fabric which blocks radiation. The newscaster seems to be saying that women who are in the midst of brachia-therapy ie Mammosite? radiation, are told to limit their contact with family members. The implication is that they are going home with the radio-active seeds in their breasts? I don't even know if this is the case. Anyway, according to this newsclip, if they wear this bra, then they protect their loved ones from radiation emanating from their breasts? but the claims don't stop there, somehow such a bra or bra insert will protect women at risk of breast cancer from radiation. Did radiation cause our breast cancer? Should there be jock straps made of this material for men with prostate cancer while they are going through their radiation/seed procedure and should men be wearing such cups to protect against prostate cancer?

Somehow I feel exploited by this nonesense.

Julie E