The incredible new test that can reveal if you’re having a heart attack

Tiny gas bubbles could help identify people at risk of a life-threatening heart attack. Once injected into the bloodstream, the movement of the bubbles can be traced with an ultrasound probe. Tiny gas bubbles could help identify people at risk of a life-threatening heart attack. Once injected into the bloodstream, the movement of the bubbles can be traced with an ultrasound probe.