This stick-on ultrasound patch could let you watch your own heart beat
The technology is a big step forward in personalized medicine
![ultrasound patch on skin](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/07/072722_AS_ultrasound-patch_feat.jpg?fit=1030%2C580&ssl=1)
When stuck to skin, a new ultrasound patch (pictured) can reveal blood flow and changes in the underlying tissue.
C. Wang et al/Science 2022