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Highly mobile valve with only leaflet tips
restricted
Leflet mid and base portions have normal mobility
Valve continues to move forward in diastole, mainly from the base
No or minimal forward movement of the leaflets in diastole
Leaflets near normal in thickness (4-5 mm)
Mid-leaflets normal, considerable thickening of margins (5-8 mm)
Thickening extending through the entire leaflet (5-8 mm)
Considerable thickening of all leaflet tissue (>8-10 mm)
A single area of increased echo brightness
Scattered areas of brightness confined to leaflet margins
Brightness extending into the mid-portion of the leaflets
Extensive brightness throughout much of the leaflet tissue
Minimal thickening just below the mitral
leaflets
Thickening of chordal structures extending uo to one third of the chordal
length
Thickening extending to the distal third of the chords
Extensive thickening and shortening of all chordal structures extending
down to the papillary muscles
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