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