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Mantis Shrimp-Inspired Camera to Detect Tumors During Surgery

May 11th, 2021 Conn Hastings Neurosurgery, Oncology, Radiology, Surgery

Researchers at the University of Illinois Urbana-Champaign have developed a hexachromatic camera that can assist with tumor imaging during surgical removal. The device is inspired by the mantis shrimp which can perceive twelve colors, compared with just three colors that can be perceived by the human eye. The new camera can visualize tumors in the body during surgery when patients are administered near-infrared probes to label cancer cells. By seeing the entirety of the tumor and removing accurately around the margins, it should be possible to minimize surgical revisions and lower the chances of cancer recurrence.

Cancerous tissue can look much like the healthy tissue surrounding it, making it difficult to know which material to remove. Removing too much healthy tissue can cause consequences for patients, particularly when removing brain tumors, but leaving cancerous tissue behind leads to tumor recurrence, causing something of a conundrum for surgeons.

Graphic by Steven Drake, Beckman Institute.

“Engineers spend incredible amounts of time and money developing the image sensors in cellphones,” said Viktor Gruev, a researcher involved in the study. “When we are out on the town, these devices can capture pictures that are perfect for social media, but when doctors are examining patients, they don’t care how nice the shot looks – they care how well the picture captures reality. The driving force in the camera market is simply incompatible with the technology required for medical diagnostics.”

The compound eye of the mantis shrimp provided the inspiration for this latest technology. “The mantis shrimp has these incredible eyes,” said Steven Blair, another researcher involved in the study. “Humans perceive three colors – red, green, and blue – because of a single layer of light-sensitive cone cells that line our retina, but the mantis shrimp perceives upward of 12 colors thanks to the stacks of light-sensitive cells at the tip of its eye. The mantis shrimp can thus see things that humans can’t imagine – and it does so in a fraction of the space.”

The hexachromatic camera employs optical filters and semiconductors to capture three colors of near-infrared light that would otherwise be invisible to a clinician. When combined with near-infrared probes that can be administered to patients, and which preferentially accumulate in cancer cells, the camera can help a surgeon to identify which areas of tissue are cancerous.

“The combination of this bioinspired camera and emerging tumor-targeted drugs will ensure that surgeons leave no cancer cells behind in the patient’s body,” said Goran Kondov, a surgeon who has tested the technology. “This additional set of eyes will help prevent recurrence of the disease, providing patients a quicker and easier path to recovery. And the device can potentially be manufactured at low cost since it is so simple, making it accessible to hospitals around the world.”

See a video about the technology:

Study in Science Translational Medicine: Hexachromatic bioinspired camera for image-guided cancer surgery

Via: University of Illinois Urbana-Champaign

Conn Hastings

Conn Hastings received a PhD from the Royal College of Surgeons in Ireland for his work in drug delivery, investigating the potential of injectable hydrogels to deliver cells, drugs and nanoparticles in the treatment of cancer and cardiovascular diseases. After achieving his PhD and completing a year of postdoctoral research, Conn pursued a career in academic publishing, before becoming a full-time science writer and editor, combining his experience within the biomedical sciences with his passion for written communication.

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