Table 4.

Number of features grouped by inter-scanner agreement and underlying parameter map and contour shape feature type. Reproducibility thresholds were adopted from Koo and Li (25). The majority of the features show moderate or poor agreement for all feature types. For throughflow velocities, only one feature showed moderate reproducibility.

Parameter map	Throughflow	WPD	Angle	N-Helicity	Vorticity	Shape
Excellent	0	0	0	0	0	0
Good	0	0	0	0	0	0
Moderate	1	4	26	4	5	11
Poor	78	75	53	75	74	5
Total features	79	79	79	79	79	16