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Chapter
Focussing by Means of Wave Field Extrapolation
Until now, focussing of ultra-sound has always been represented by a summation procedure along wave-fronts. Generally, the summation procedure will be preceded by time correction as in most practical cases the...
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Chapter
A dynamically focused multiscan system
Clinical ultrasound instruments with a linear array transducer are nowadays one of the methods which can be used to obtain real time two dimension cardiac images 1), 2), 3). Unlike mechanical sector scanners 4...