Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2005 Sep;52(9):1608-12.
doi: 10.1109/tuffc.2005.1516034.

Characterization of high-frequency, single-element focused transducers with wire target and hydrophone

Bin Huang, K Kirk Shung

Characterization of high-frequency, single-element focused transducers with wire target and hydrophone

Bin Huang et al. IEEE Trans Ultrason Ferroelectr Freq Control. 2005 Sep.

Abstract

In this paper, a wire-target technique was used for lateral beam profile measurements for a single-element, focused transducers in the very high-frequency range (35-60 MHz). Two wire targets made from 9-cm long tungsten wires with diameters of 8 microm and 20 microm were used as the pulse-echo targets to measure the lateral beam profiles at the focal plane of two single-element, focused transducers, a spherically focused 40 MHz transducer and a lens-focused in-house lithium niobate (LiNbO3) 60 MHz transducer. For comparison, measurements on the same transducers were performed by three small-aperture hydrophones with geometrical diameters varying from 37 microm to 150 microm. Tomographic reconstruction of the acoustic field from the spherically focused transducer also was conducted. Results obtained with the wire-target technique are comparable to those obtained with small-aperture hydrophones in characterizing lateral radiation patterns of a single-element, focused transducer in the high-frequency range (35-60 MHz). However, the wire-target method may overestimate pulse length because of the additional attenuation caused by the return path. Compared to small-aperture hydrophones, the wire-target technique is simpler and more cost effective. Its major advantage, however, is in the frequency range above 100 MHz in which commercial hydrophones are not yet available.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Block diagram of the experimental arrangement.
Figure 2
Figure 2
Lateral beam profiles of the 40 MHz Panametrics transducer
Figure 3
Figure 3
Lateral beam profiles of the 60 MHz LiNbO3 transducer
See this image and copyright information in PMC

References

    1. IEEE. IEEE guide for medical ultrasound field parameter measurements. IEEE. 19901989:790.
    1. AIUM 1992 Acoustic Output Measurement and Labeling Standard for Diagnostic Ultrasound Equipmenmt (Laurel,MD)
    1. Kay Raum, O’Brien WD. Pulse-Echo Field Distribution Measurement Technique for High-Frequency Ultrasound Sources. IEEE Trans Ultrason Ferroelec Freq Contr. 1997;44(4):810–815.
    1. Lum P, Greenstein M, Grossman C, Szabo TL. High-freqency membrane hydrophone. IEEE Trans Ultrason Ferroelec Freq Contr. 1996 July;43(4):536–44.
    1. Lum, P.,Greenstein,M.etc. A 150-MHz-Bandwidth Membrane Hydrophone for Acoustic Field Characterization, The Hewlett-Packard Journal, 6–16 August 1988