Use of an acoustic transponder for US visualization of biopsy needles.
A 20-gauge Chiba needle with a stylet embedded with polyvinyldifluoride (PVDF), a polymer that acts as an acoustic-electric transducer, facilitated a variety of diagnostic and therapeutic ultrasound (US)-guided interventions in nine patients. PVDF receives acoustic energy from the US scanner and transmits an electrical signal through the stylet and a shielded cable to the scanner, which results in appearance of a bright echo on the monitor at the location of the needle tip.
Winsberg
F
F
Department of Radiology, Mount Sinai Medical Center, City University of New York, NY 10029-6574.
Mitty
H A
HA
Shapiro
R S
RS
Yeh
H C
HC
D001707:Biopsy, Needle / Q000295:instrumentation*; D006801:Humans; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation*