Table 3. Intertechnique Reproducibility of Left Atrial Appendage and Left Atrium Volume Measurements.

	Measurement Pairs	Left Atrial Appendage		Left Atrium
Image Quality	N	ICC	CV%	ICC	CV%
Excellent	50	0.917	9.8	0.965	7.3
Good	50	0.963	13.5	0.944	8.0
Average	50	0.957	12.1	0.949	9.8
Poor	50	0.953	14.1	0.930	10.6
Interobserver	80	0.949	13.0	0.931	9.4
Intra-observer	120	0.957	12.0	0.955	8.6
Total	200	0.954	12.4	0.945	8.9

Two hundred measurement pairs: 80 pairs with different observers and 120 pairs with the same observer.