The method 1, which comprises {HEAD ~ the steps} of cutting the notches extending in the array direction and a direction perpendicular to the array direction and providing {TAIL ~ a plurality} of transducer elements extending in the array direction 
The method 1 , which comprises { HEAD ~ the steps } of cutting the notches extending in the array direction and a direction perpendicular to the array direction and providing { TAIL ~ a plurality } of transducer elements extending in the array direction
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH