. Author manuscript; available in PMC: 2014 Apr 10.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2012 Feb;59(2):217–230. doi: 10.1109/TUFFC.2012.2182

Table 1.

Measurements of PSF size and L1-norm for delay-and-sum beamforming and for our proposed approach (‘practical’ processing in black and ‘optimal’ processing in gray), for different probes and FOV settings

	Point-object x-z location (cm)	Delay+sum central lobe (mm²)	Our method central lobe (mm²)	Improvement	Delay+sum L1-norm (mm²)	Our method L1-norm (mm²)	Improvement

ATL P4-2 rectangular FOV	(0.0, 9.2)	1.55	0.973	37.3%	9.20	6.640	27.8%
			0.972	37.4%		6.53	29.0%

ATL P4-2 sector FOV	(0.0, 9.2)	1.51	1.26	16.6%	11.3	8.28	26.7%
			1.23	18.5%		8.11	28.3%

Acuson rectangular FOV	(0.3, 3.7)	0.324	0.322	0.64%	6.13	3.81	37.8%