Notches are cut out in the ultrasonic transducer material to divide it into a plurality of {HEAD ~ transducer elements} arranged in {TAIL ~ the array direction} and a direction perpendicular to the array direction 
arranged in
Notches are cut out in the ultrasonic transducer material to divide it into a plurality of { HEAD ~ transducer elements } arranged in { TAIL ~ the array direction } and a direction perpendicular to the array direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH