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Balloon-based techniques: MammoSite, Axxent, Contura
Axxent Electronic Brachytherapy
FDA approved 2006
Quite similar to MammoSite
Differences:
-Through a third port drainage of seromen or air is possible
-Wall of balloon is covered in radiolucent material – visible on CT
-Uses an electronic 50 kV x-ray source rather than Ir-192 HDR source
Therefore a specifically shielded radiation room for an after-loader is not needed,
this gives potential for wider usage