Cardiovascular Imaging Glossary

The portion of the left ventricular outflow tract that includes the aortic valve, sinuses of Valsalva, and sinotubular j...

The calculated opening area of the aortic valve, measured in square centimeters, used to assess the severity of aortic s...

An invasive diagnostic procedure using catheters inserted into the heart's chambers or vessels to measure pressures and...

A measure of myocardial deformation in the short-axis plane, representing the percentage change in circumference during...

Alternative blood flow pathways that develop to bypass significant coronary artery stenosis or occlusion.

The abnormal leakage of contrast material from blood vessels into surrounding tissues, indicating vascular injury or inc...

Impaired relaxation and filling of the heart during diastole, often leading to heart failure with preserved ejection fra...

The ratio of early mitral inflow velocity to early mitral annular tissue velocity, used to estimate left ventricular fil...

The increase in ejection fraction from rest to peak stress, indicating contractile reserve of the left ventricle.

A quantitative MRI parameter representing the percentage of myocardial tissue occupied by extracellular space, used to a...

A non-invasive ultrasound technique measuring endothelial function by assessing arterial dilation following reactive hyp...

Invasive measurement of coronary artery pressure to assess functional significance of stenoses.

Chronically dysfunctional but viable myocardial tissue that can recover function following revascularization.

Time interval between inversion pulse and image acquisition in MRI, critical for tissue contrast optimization.

Impaired perfusion at the capillary level despite successful restoration of epicardial coronary flow, typically assessed...

Pre-contrast T1 relaxation time measurement of myocardium used to detect diffuse fibrosis, edema, and infiltrative cardi...

Abnormal movement of the interventricular septum away from the left ventricle during systole, often seen after cardiac s...

An electrophysiology procedure to electrically isolate pulmonary veins from the left atrium to treat atrial fibrillation...

The contractile motion of individual cardiac wall segments during the cardiac cycle.

Short Tau Inversion Recovery, an MRI sequence that suppresses signal from fat tissue while maintaining signal from fluid...

Standardized grading system (0-3) for assessing blood flow through coronary arteries during angiography.

Backward flow of blood through the tricuspid valve from the right ventricle to the right atrium during systole.

Impaired contraction of specific heart muscle segments, typically indicating ischemia or infarction.