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<h2 class="element-invisible">You are here</h2><div class="breadcrumb"><a href="/">Home</a> » <a href="/news-events">News & Events</a> » <a href="/news-events/nih-research-matters">NIH Research Matters</a></div> <div class="l-region l-region--section-header">
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<p class="publishdate"><span property="dc:date" datatype="xsd:dateTime" content="2022-08-16T00:00:00-04:00" class="date-display-single">August 16, 2022</span></p><div class='syndicate'><h1>Ultrasound imaging gets small and wearable </h1><div class="callout callout-with-border"><h3>At a Glance</h3>
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<ul>
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<li>Scientists created a wearable ultrasound device—about the size of a postage stamp—that can continuously image inside the body for at least two days.</li>
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<li>With further development, wearable ultrasound devices can provide long-term visuals of internal tissues in a variety of settings.</li>
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</ul></div><div class="media-float-right"><div class="ds-1col file file-image file-image-jpeg view-mode-floated_media clearfix">
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<picture title="Thin square-shaped patch on skin">
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<!--[if IE 9]><video style="display: none;"><![endif]-->
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-large/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=8dz4ojl7&timestamp=1660659850 1x" media="screen and (min-width: 960px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=8Mhg6ATK&timestamp=1660659850 1x" media="screen and (min-width: 800px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium-small/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=QdLPIFnJ&timestamp=1660659850 1x" media="screen and (min-width: 600px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-small/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=UyosVhVf&timestamp=1660659850 1x" media="screen and (min-width: 480px)" />
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<source srcset="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-tiny/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=XU92VP3Q&timestamp=1660659850 1x" media="screen and (min-width: 0)" />
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<!--[if IE 9]></video><![endif]-->
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<img src="https://www.nih.gov/sites/default/files/styles/floated_media_breakpoint-medium/public/news-events/research-matters/2022/20220816-sticker.jpg?itok=8Mhg6ATK&timestamp=1660659850" alt="Thin square-shaped patch on skin" title="Thin square-shaped patch on skin" />
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</picture><span class="caption">Scientists developed a miniature, wearable ultrasound patch that adheres strongly to skin and can continuously monitor internal organs for at least 48 hours.</span><span class="credit">Felice Frankel, MIT</span></div>
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||
</div><p>Ultrasound is a noninvasive technique that lets clinicians peer inside the body to monitor health or diagnose disease. Imaging sessions are generally brief because ultrasound often requires the expertise of trained technicians working in medical settings.</p>
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<p>Several research groups have been seeking more versatile approaches that would allow longer-term ultrasound monitoring in a variety of settings via wearable devices. To date, most of these efforts have provided relatively low-resolution images or are unable to visualize deep tissues or organs.</p>
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||
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||
<p>Now, an NIH-funded research team led by Dr. Xuanhe Zhao at the Massachusetts Institute of Technology has developed a new type of wearable ultrasound patch that overcomes many of the limitations of earlier approaches. This multi-layered device is about the size of a thick postage stamp, and it adheres to skin in both wet and dry environments. The device was described in <em>Science</em> on July 29, 2022.</p>
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||
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||
<p>Ultrasound works by first placing a probe, or transducer, on the body. The transducer emits high-frequency sound waves that enter the body and bounce off internal tissues, creating echoes that are captured and transmitted to instruments that translate the data into pictures or videos. A soft gel applied between the skin and probe helps to enhance soundwave transmission.</p>
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||
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||
<p>The patch created by Zhao’s team used several advanced techniques to combine all of these ultrasound components in a miniature package. A thin, rigid array of ultrasound probes sits atop a tough but flexible hydrogel layer. An elastomer membrane protects the hydrogel from drying out, and a bioadhesive binds the probe strongly to skin. The combination of a rigid probe array and flexible hydrogel-elastomer layers enables more stable and higher-resolution imaging than other wearable ultrasound devices that are thin and stretchy.</p>
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<div class="media-float-right">
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<div><a href="https://www.youtube.com/embed/Kn2J8W4csNc?autoplay=1" rel="shadowbox; width=640; height=360" title="New stamp-sized ultrasound adhesives produce clear images of heart, lungs, and other internal organs. MIT"><img alt="New stamp-sized ultrasound adhesives produce clear images of heart, lungs, and other internal organs. MIT" height="427" src="https://www.nih.gov/sites/default/files/styles/video_sidebar/public/media-youtube/Kn2J8W4csNc.jpg?itok=f_I_w_9G" title="New stamp-sized ultrasound adhesives produce clear images of heart, lungs, and other internal organs. MIT" typeof="Image" width="640" /></a></div>
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<p class="caption">New stamp-sized ultrasound adhesives produce clear images of heart, lungs, and other internal organs. <em>MIT</em></p>
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</div>
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<p>The researchers tested the patch on 15 human volunteers. They showed that the device could be comfortably worn for at least 48 hours. Depending on placement, the patch could provide continuous imaging of blood vessels, heart, muscle, diaphragm, stomach, or lung. The heart or lungs could be stably and continuously imaged even while volunteers were jogging or cycling.</p>
|
||
|
||
<p>Despite the patch’s potential for on-the-fly mobile imaging, the device currently must be hooked to computer systems for intensive data processing. But Zhao and his team foresee future possibilities:</p>
|
||
|
||
<p>“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,” Zhao says. “We believe this represents a breakthrough in wearable devices and medical imaging.”</p>
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<p>—by Vicki Contie</p></div><h2 class="label-above">Related Links</h2><ul class="spaced print-urls"><li><a href="https://www.nih.gov/news-events/nih-research-matters/wearable-ultrasound-patch-tracks-blood-pressure" target="_top">Wearable Ultrasound Patch Tracks Blood Pressure</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/system-reveals-3d-details-living-tissues" target="_top">System Reveals 3D Details of Living Tissues</a></li><li><a href="https://www.nih.gov/news-events/nih-research-matters/monitoring-bacteria-body-ultrasound" target="_top">Monitoring Bacteria in the Body with Ultrasound</a></li><li><a href="https://newsinhealth.nih.gov/2019/11/medical-scans-explained" target="_top">Medical Scans Explained</a></li><li><a href="https://www.nibib.nih.gov/science-education/science-topics/ultrasound" target="_top">Ultrasound</a></li></ul><p class="footnote"><strong class="label-inline">References: </strong><a href="https://pubmed.ncbi.nlm.nih.gov/35901155/">Bioadhesive ultrasound for long-term continuous imaging of diverse organs</a>. Wang C, Chen X, Wang L, Makihata M, Liu H-C, Zhou T, Zhao X. <em>Science</em>. 2022 Jul 29;377(6605):517-523. doi: 10.1126/science.abo2542. Epub 2022 Jul 28. PMID: 35901155.</p><p class="footnote"><strong class="label-inline">Funding: </strong>NIH’s National Heart, Lung, and Blood Institute (NHLBI); Defense Advanced Research Projects Agency; National Science Foundation; US Army Research Office.</p>
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/research-context-can-we-slow-aging">Research in Context: Can we slow aging?</a></p>
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/brain-changes-observed-during-pregnancy">Brain changes observed during pregnancy</a></p>
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/risk-future-burden-dementia-united-states">Risk and future burden of dementia in the United States </a></p>
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<p><a href="https://www.nih.gov/news-events/nih-research-matters/complete-wiring-map-adult-fruit-fly-brain">Complete wiring map of an adult fruit fly brain</a></p>
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<p><strong>Editor:</strong> Harrison Wein, Ph.D.</p>
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<p><strong>Assistant Editors:</strong> Vicki Contie and Brian Doctrow, Ph.D.</p>
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<p><strong><em>NIH Research Matters </em></strong>is a weekly update of NIH research highlights reviewed by NIH’s experts. It's published by the <a href="/institutes-nih/nih-office-director/office-communications-public-liaison">Office of Communications and Public Liaison</a> in the <a href="/institutes-nih/nih-office-director">NIH Office of the Director</a>.</p>
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