fbd892b8_n_between_2D_and_3D___Wikiecho__Limitations
[Advantages] 3DE allows visualization of cardiac structures independent on availability of specific acoustic windows (i.e. en face view of the mitral valve from apical approach) and anatomically sound alignment of the imaging plane to provide accurate planimetri of orifice size (i.e. planimetry of mitral stenosis or interatrial septal defect) [Limitations] 
Poor acoustic window limits the application of transthoracic 3DE
Comparison between 2D and 3D - Wikiecho
Limitations