Before they excise a tumor, surgeons need to determine exactly where the cancerous cells lie. Recognizing this, a team of researchers at the University of Arizona (Tucson, AZ) and Washington University in St. Louis (Missouri) has developed a multimodal imager that combines two systemsânear-infrared (NIR) fluorescent imaging to detect marked cancer cells and visible light reflectance imaging to see the contours of the tissue itselfâinto a small, lightweight package that measures 25 mm across. The imager could lead to cheaper and more lightweight tools for surgeons, such as goggles or hand-held devices, to identify tumors in real time in the operating room.
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