The mitral annulus is the ring-shaped fibrous structure that forms the attachment point for the mitral valve leaflets between the left atrium and left ventricle. During echocardiography, the mitral annulus is an important landmark for several measurements. Tissue Doppler imaging of the mitral annulus measures the velocity of the heart muscle at this location, providing valuable information about diastolic function — how well the heart relaxes and fills with blood. Mitral annular calcification, a degenerative process where calcium deposits form in the annulus, is a common finding in older adults and can sometimes lead to mitral valve dysfunction.
Sonography Term