Understanding how the brain creates conscious experience remains one of science’s most difficult challenges. Brain scans and behavior studies have linked awareness to certain neural patterns, but ...

A man comes into the clinic, hands trembling. He can barely write or hold a cup of water. He straps on a specialized head device, lies back and slides into a magnetic resonance imaging (MRI) scanner.

An ultrasound scan is one of the main tests doctors use to diagnose cholecystitis. On a scan, clinicians may be able to spot the presence of gallstones, which can cause this condition. Cholecystitis ...

Ultrasound imaging is widely used in laboratories for nondestructive materials testing and in health care as a noninvasive diagnostic tool. But for it to work, transducers and an acoustic-coupling ...