The flexible probe has {TAIL ~ a coaxial cable design} that includes a piezoelectric element at a proximal end of {HEAD ~ the probe} 
The flexible probe has { TAIL ~ a coaxial cable design } that includes a piezoelectric element at a proximal end of { HEAD ~ the probe }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD