Coronary flow reserve (CFR) is a key sign of coronary artery disease, namely how the coronary arteries that feed blood to the heart may adapt to various physiological situations such as exercise, ...

The instantaneous wave-free ratio (iFR) is an index used to assess the severity of coronary-artery stenosis. The index has been tested against fractional flow reserve (FFR) in small trials, and the ...

The coronary artery supplies blood to the heart. If calcium builds up in the coronary artery, it can lead to coronary artery disease and increase a person’s risk of a heart attack. Calcium is the most ...

Left: 3D power-Doppler volumes overlaid on anatomical volumes of the myocardium in the left-anterior descending artery. Right: Absolute flow velocities estimated by 4D ultrafast ultrasound flow ...

When the heart has to work harder to pump blood through stiffer, narrower arteries, high blood pressure can develop. Atherosclerosis. This term is clinical for hardening of the arteries. "It occurs as ...

Nonobstructive coronary artery disease (CAD) occurs when the coronary arteries have a plaque buildup but remain unblocked. Experts usually view it as less severe than obstructive CAD. However, ...

New insights into spontaneous coronary artery dissection—a devastating cause of heart attacks in young, healthy patients—were ...

Coronary steal syndrome is a condition in which blood is taken from a narrowed artery in the heart and rerouted to — in other words, stolen by — other blood vessels. This condition can occur when some ...

April 11 (UPI) --A newly developed, non-invasive imaging test can help identify which patients with coronary artery blockage or narrowing need angioplasty or a bypass procedure, a U.S. study published ...

Smaller amounts of plaque buildup can trigger cardiovascular problems for women. Researchers say new guidelines are needed.