Northwestern UniversityA collaborative effort between Northwestern University and Washington University School of Medicine in St. Louis has led to the development of a flexible adhesive sticker. When applied to an organ, this sticker responds to the body’s varying pH levels by undergoing morphological changes.Postoperative gastrointestinal leaks are common 3–7 days following surgery and can be dangerous if detected too late.
Rather than creating brand-new imaging technologies, researchers focussed on improving existing techniques, allowing them to “see” elements that would not normally be apparent. Ultrasound technology offers manyefits, including low cost, wide availability, lack of complicated equipment requirements, and no risk of radiation exposure for patients.
Ultimately, researchers found a way to get around this restriction by employing tiny sensor devices made to be readable by ultrasonic imaging. In particular, they used a flexible and chemically responsive soft hydrogel to make a tiny sticker that adheres to tissue. In ultrasound imaging, the metal disks contrast sharply because their acoustic properties differ significantly from the surrounding tissue’s.
Source: Healthcare Press (healthcarepress.net)
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