It's the battle of the robots.

Intuitive Surgical (ISRG) and Accuray (ARAY) are both pioneers in robotic technologies to treat cancer and other diseases.The companies are located just three miles apart in Sunnyvale, Calif. Both were founded in 1999. Both integrate sophisticated imaging with their own science. And both find their systems are used more for treatment of prostate cancer than any other disease.

That's where the similarities end.

Intuitive Surgical's robot is called Da Vinci. With a surgeon at the controls, it performs minimally invasive surgery. Accuray's CyberKnife uses a tightly focused radiation beam to zap tumors without surgery and without damaging surrounding tissue.

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Sharon Grant
Editorial Team