New stamp-sized ultrasound adhesives deliver clear images of the heart, lungs, and other internal organs. When clinicians need live images of a patient’s internal organs, they often turn to ultrasound imaging for a safe and noninvasive window into the body’s workings. In order to capture these insi
MIT engineers designed an adhesive patch that produces ultrasound images of the body. The stamp-sized device sticks to skin and can provide continuous ultrasound imaging of internal organs for 48 hours. Credit: Felice Frankel
The engineers presented the design for the new ultrasound sticker in a paper published on July 28 in the journal. The stamp-sized device sticks to skin and can provide continuous ultrasound imaging of internal organs for 48 hours. “We envision a few patches adhered to different locations on the body, and the patches would communicate with your cellphone, where AI algorithms would analyze the images on demand,” says the study’s senior author, Xuanhe Zhao, professor of mechanical engineering and civil and environmental engineering at MIT. “We believe we’ve opened a new era of wearable imaging: With a few patches on your body, you could see your internal organs.
But these experimental designs have produced low-resolution images, in part due to their stretch: In moving with the body, transducers shift location relative to each other, distorting the resulting image. The bottom elastomer layer is designed to stick to skin, while the top layer adheres to a rigid array of transducers that the team also designed and fabricated. The entire ultrasound sticker measures about 2 square centimeters across, and 3 millimeters thick — about the area of a postage stamp.
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