ECG Learns to See the Heart Like Ultrasound
The heart beats like a drum in the next room: from the rhythm and the dullness of the thump, an experienced physician can guess whether there’s an enlarged chamber, a thickened wall, or a valve flapping out of sync. But to see it for sure, the patient lies on a couch while a probe glides across the chest — echocardiography (heart ultrasound).