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Treating with eBx®

Electronic Brachytherapy (eBx®) uses a miniaturized X-ray tube to apply radiation directly to the tumor site. The goal is to deliver the radiation directly to the cancerous site, so the patient receives less radiation to critical organs and healthy tissue.

Two types of eBx® treatment for Breast Cancer:

Intraoperative Radiation Therapy (IORT) is a technique where radiation is given in a single radiation dose at the time of lumpectomy surgery. Immediately after the tumor is removed, a small, inflatable balloon is placed into the breast cavity. Radiation therapy utilizing the Xoft® Electronic Brachytherapy System®  is then delivered. The procedure is quick and efficient, taking as little as eight minutes during surgery. Once the radiation therapy is finished, the doctor removes the balloon, closes the tumor cavity, and your treatment is complete.


Accelerated Partial Breast Irradiation (APBI) is delivered after surgery. It differs from external beam radiation therapy in two main ways. First, it reduces the treatment area from the entire breast to a confined area of the breast where the tumor was removed. The tissue surrounding the tumor site is the part of the breast where most cancers are likely to recur. Second, it reduces the treatment time from seven weeks to five days. Since the duration of treatment is shorter, radiation is delivered in fewer sessions at larger doses.

Advantages of Xoft® Electronic Brachytherapy System®:

  • Shorter treatment schedule eliminates travel time to and from the treatment center allowing patients the freedom to return back to their daily lives
  • Delivers radiation directly to the cancerous site
  • Less radiation is delivered to surrounding healthy organs and tissue*
  • With IORT, reconstruction can be completed during your surgery


*Dickler, et al. "A Dosimetric comparison of MammoSite high dose rate brachytherapy and Xoft Axxent electronic brachytherapy," Brachytherapy (6) 2007, 164–168. "A Dosimetric comparison of Xoft Axxent Electronic Brachytherapy and Ir-192 HDR brachytherapy in the treatment of endometrial cancer," Brachytherapy (7) 2008, 154.