ultrasound

Scientists have developed a biodegradable ultrasound speaker that can be placed inside the brain. When activated, it makes the blood-brain barrier permeable, potentially allowing certain drugs such as brain cancer chemotherapy and antidepressants to…

An ultrasound is probably most popularly recognized as a doctor’s tool to peer into the womb and take a look at a growing fetus during a woman’s pregnancy. But what if sound could be used to take a look at even smaller things – like the microorganisms in…