an array of {HEAD ~ transducer elements} arranged in rows and {TAIL ~ columns} along a first plane for transmitting first signals and receiving reflected signals for image processing; and a plurality of circuit structures each having 
arranged in
an array of { HEAD ~ transducer elements } arranged in rows and { TAIL ~ columns } along a first plane for transmitting first signals and receiving reflected signals for image processing ; and a plurality of circuit structures each having
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH 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 OTH OTH OTH OTH