The array of transducer elements is attached to the circuits so that the circuits are oriented in {HEAD ~ planes} parallel with {TAIL ~ the first plane} 
The array of transducer elements is attached to the circuits so that the circuits are oriented in { HEAD ~ planes } parallel with { TAIL ~ the first plane }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL