TABLE V.

Estimated effective scatterer diameters (ESDs) from backscatter coefficients obtained by different ultrasound systems. Also shown are the mean square errors (MSE) for each estimate with respect to the Faran theory model, assuming the estimated single ESD. (*ESD for Faran was estimated assuming a single diameter from the Faran BSC prediction obtained by measured size distribution).

System	ESD ($\widehat{d}$, μm)	MSE (dB)
Faran* (single diameter)	42	0.002
UltraSonix L9-4/38	42	0.121
UltraSonix L14-5/38	39	0.090
Zonare L8-3	62	0.670
Zonare L14-5sp	55	0.399
Siemens 18L6	42	0.030
VisualSonics MS200	39	0.037
Single element	46	0.115