FDA clears Beacon transponder

The FDA issues 510(k) approval to Varian Medical Systems' (VAR -0.9%) Calypso soft tissue Beacon transponder. The grain of rice-size transponder can be implanted throughout the body except in the lung. It emits a non-ionizing electromagnetic signal that is tracked in real time by the Calypso system in order to guide radiation treatment beams to precise tumor targets.

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