Table 2.

Combined data from all users comparing conventional 2-D ultrasound (US) with the InVision™ System at each angle in respect to the 2-D US plane

	Non-guided (n= 30 attempts)	InVision™ (n= 30 attempts)	P-value
Hits at 0°, n	12	27	<0.001
Hits at 45°, n	12	29	<0.001
Hits at 90°, n	8	23	<0.001

n= 30 attempts at antenna placement per group (non-guided vs. InVision™ System) per angle (0°, 45°, 90°), where 0° is parallel to or ‘in plane’ with the US image and 90° is orthogonal to or ‘out of plane’ with the US image