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Figure 2 Four examples of prolapses of different scallops (arrows) of the mitral valve correctly identified by 3D TTE and 3D TEE. Each of the 4 panels shows head-to-head comparison of 3D TTE (left side) and 3D TEE (right side) techniques by imaging the valve in the surgical view (from the left atrium). (A) P1 prolapse; (B) P2 prolapse; (C) P3 prolapse; (D) A2 prolapse. AO = aorta; other abbreviations as in Figure 1.