A Preprocess Method of External Disturbance Suppression for Carotid Wall Motion Estimation Using Local Phase and Orientation of B-Mode Ultrasound Sequences

Table 1

Normalized root-mean-square error of estimated disturbance results vs. reference disturbance.

RMSE	BM	PM	SBM	SPM	SWBM	SWOM	SWPM	SWPOM
Radial direction	0.0242	0.6662	0.0237	0.2537	0.0278	0.0268	0.0240	0.0241
Longitudinal direction	0.5460	1.1008	0.3951	0.5370	0.4924	0.9224	0.1685	0.1349
Rotation angle	0.2119	2.2425	0.3094	0.8868	0.3078	0.3682	0.2183	0.2643