Contrast Improvement in Sub- and Ultraharmonic Ultrasound Contrast Imaging by Combining Several Hammerstein Models

Table 2

RMSE between the signal backscattered by the contrast agent and that modeled with the Hammerstein model, method 1, and method 2.

	Standard Hammerstein	Method 1	Method 2
RMSE (dB)	−8.3	−30.5	−31.1