Why is 3D echocardiography particularly useful for surgical planning of the mitral valve?

• A. Replaces all 2D imaging.
• B. Not useful for valve repair planning.
• C. Allows detailed assessment of mitral valve apparatus, including annulus size, leaflet geometry, and billow; aids in planning repair strategy and device sizing without relying on geometric assumptions.
• D. Only used for research.

Answer: (C)