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