Calypso 4D Localization System

Winship Cancer Institute of Emory University is the first cancer facility in the Southeast to provide prostate cancer patients with Calypso, a cutting-edge technology that helps physicians localize and track prostate cancer motion during treatment. This device, combined with Emory’s On-Board Imaging System, greatly improves the precision and effectiveness of prostate cancer treatments.

“Calypso plus On-Board Imaging enables us to deliver extremely accurate radiation therapy in real time,” says Peter Rossi, MD, assistant professor in Emory’s radiation oncology department. “Organs naturally move during radiation treatments, and this movement cannot always be predicted. In the end, it makes our treatment more accurate, which we hope will improve the lives of men with prostate cancer.”

The Calypso system uses tiny electromagnetic sensors, about the size of a grain of rice, that are implanted in the prostate prior to treatment. These sensors essentially become a “GPS system,” enabling doctors to locate the tumor within the prostate and then continuously monitor that location during delivery of the radiation. The sensors, which are passive until activated by the Calypso system, are implanted in an outpatient procedure similar to a biopsy.

In 2004, Winship Cancer Institute of Emory University was the first institution in North America to implement the On-Board Imager system for image-guided radiation therapy. The combination of Calypso GPS for the body and On-Board Imager is one of the first in the country. The Calypso system received FDA clearance in 2006.