Transducer for harmonic intravascular ultrasound imaging.
A recent study has shown the feasibility of tissue harmonic imaging (THI) using an intravascular ultrasound (IVUS) transducer. This correspondence describes the design, fabrication, and characterization of a THI-optimized piezoelectric transducer with oval aperture of 0.75 mm by 1 mm. The transducer operated at 20 MHz and 40 MHz, and was comprised of a single piezoelectric layer with additional passive layers. The Krimholtz-Leedom-Matthaei (KLM) model was used to iteratively find optimal material properties of the different layers. The transducer characterization showed -6 dB fractional bandwidths of 30% and 25%, and two-way insertion losses of -20 dB and -36 dB, respectively.
Vos
Hendrik J
HJ
Frijlink
Martijn E
ME
Droog
Erik
E
Goertz
David E
DE
Blacquière
Gerrit
G
Gisolf
Anton
A
de Jong
Nico
N
van der Steen
Antonius F W
AF
D002404:Catheterization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D008567:Membranes, Artificial; D008839:Microelectrodes; D008904:Miniaturization; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers; D018084:Ultrasonography, Interventional / Q000295:instrumentation* / Q000379:methods
D008567:Membranes, Artificial