Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
Wearable technologies are advancing rapidly and can provide a multitude of skin-based physical and chemical readouts. However, harnessing wearable technologies for internal imaging applications such as ultrasound – which provides crucial information on organ function and disease – has been challenging.