The VScan from GE
Eric Topol felt a twinge of nostalgia when he stopped carrying around his trusty stethoscope.
Dr. Topol, a cardiologist in San Diego, carries with him instead a portable ultrasound device roughly the size of a cellphone. When he puts it to a patient's chest, the device allows him to peer directly into the heart. The patient looks, too; together, they check out the muscle, the valves, the rhythm, the blood flow. I