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Table 2 Aortic annulus measurements assessed by different echocardiographic modalities

From: Transesophageal echocardiography measurements of aortic annulus diameter using biplane mode in patients undergoing transcatheter aortic valve implantation

Modality Aortic annulus diameter (mm)
2DTTE 20.4±2.2*
2DTEE 22.3±2.5
BP-mode 22.9±1.9
3DTEE 23.1±1.9
  1. *p < 0.0001 vs. 2D-TEE, BP-mode and RT3DE. 2D denotes two-dimensional; 3D, three-dimensional; TTE, transthoracic echocardiography; TEE, transesophageal echocardiography; BP, biplane.