Table 2. Bias and limit-of-agreements between fully sampled and undersampled data (regional values).

	US	Apical		Mid-ventricular		Basal
		Bias	95% LOA	Bias	95% LOA	Bias	95% LOA
Radial velocity	2	-0.01	[-0.24, 0.20]	-0.01	[-0.22, 0.19]	0.00	[-0.22, 0.20]
(cm/s)	4	-0.01	[-0.41, 0.39]	-0.01	[-0.39, 0.38]	-0.00	[-0.36, 0.40]
	8	-0.04	[-0.74, 0.78]	-0.03	[-0.69, 0.85]	-0.02	[-0.62, 0.86]
	16	-0.0	[-1.1, 1.3]	-0.02	[-0.98, 1.41]	0.00	[-0.95, 1.47]
Long. velocity	2	0.01	[-0.24, 0.26]	-0.01	[-0.21, 0.26]	-0.01	[-0.23, 0.27]
(cm/s)	4	0.02	[-0.41, 0.50]	0.01	[-0.40, 0.49]	-0.03	[-0.48, 0.47]
	8	0.00	[-0.79, 0.99]	-0.01	[-0.88, 0.94]	-0.07	[-1.10, 0.95]
	16	0.0	[-1.2, 1.6]	-0.0	[-1.4, 1.4]	-0.0	[-1.6, 1.5]
Circ. strain	2	-0.0	[-1.5, 1.3]	-0.0	[-1.4, 1.2]	-0.0	[-1.3, 1.0]
(%strain)	4	-0.0	[-2.1, 2.2]	0.0	[-1.7, 1.7]	0.0	[-1.9, 2.2]
	8	0.0	[-2.9, 6.2]	0.1	[-2.3, 4.2]	0.2	[-2.6, 3.5]
	16	0.3	[-4.5, 8.4]	0.5	[-3.0, 6.8]	0.5	[-2.8, 7.1]

Circumferential strain was calculated from temporal integration of the myocardial velocity field measured by TPM [5,20].

US = undersampling factor. LOA = limits of agreement.