Imaging for early stage breast cancer

Balloon-based techniques: MammoSite, Axxent, Contura

CONTURA FDA approved 2007 Quite similar to MammoSite but has multiple lumens for passage of Ir-192 sources A central catheter and 4 surrounding channels Increased dose flexibility Potential for reduced skin/chest wall dose Can account for asymmetric implant with respect to central catheter Better conformance due to removal of seromen / air