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The effect of 1.75-D array element height on time-shift compensation is analyzed using a two-dimensional array system and a distributed aberration phantom. The analysis uses hydrophone measurements of transmit beams. The results indicate that, for imaging at 3 MHz through aberration representative of the abdominal wall, similar focus compensation performance can be expected from arrays with element pitches less than or equal to 3.0 mm.
Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on (Volume:49 , Issue: 9 )
Date of Publication: Sept. 2002