Dr. Brandon Tieu’s eyes flicked between three screens as he followed a virtual blue path through a maze of dark tunnels. His controls, one for each hand, were an oversized scroll wheel to move forward, and a ball that he could roll to turn in any direction.

Tieu compared it to playing “Centipede.” But this wasn’t a video game. It was a lung surgery demonstration.

His patient during the May 30 event at Salem Hospital was a disembodied, plastic set of pink lungs with black caps at the end of artificial bronchi, the lung’s air tubes. They represented potential cancerous growths.

Tieu, a Salem Health chest and lung surgeon, joined representatives from Intuitive Surgical in their 18-wheel demonstration truck as part of a tour showing off the latest innovations in robotic surgery. Doctors, Sa

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