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Ultrasound field characterisation in air using light diffraction tomography

Almqvist, Monica LU ; Persson, Hans W LU and Lindström, Kjell LU (2004) Conference on Advanced Metrology for Ultrasound in Medicine (AMUN 2004) In AMUM 2004: Advanced Metrology for Ultrasound in Medicine 2004 1. p.150-154
Abstract
The aim of this work was to show the applicability of light diffraction tomography on airborne ultrasound. Different air-coupled transducers in the frequency range 40 kHz - 2 MHz were measured to show the method's performance. A calibrated microphone and the pulse-echo method were used to evaluate the results. The absolute measurements agreed within the calibrated microphone's uncertainty range. Pulse waveforms and corresponding FFT-diagrams show the method's higher bandwidth compared to the microphone. Further, the method offers non-perturbing measurements with high spatial resolution, which was especially advantageous for measurements close to the transducer surfaces. The S/N-ratio was larger than or in the same range as that of the two... (More)
The aim of this work was to show the applicability of light diffraction tomography on airborne ultrasound. Different air-coupled transducers in the frequency range 40 kHz - 2 MHz were measured to show the method's performance. A calibrated microphone and the pulse-echo method were used to evaluate the results. The absolute measurements agreed within the calibrated microphone's uncertainty range. Pulse waveforms and corresponding FFT-diagrams show the method's higher bandwidth compared to the microphone. Further, the method offers non-perturbing measurements with high spatial resolution, which was especially advantageous for measurements close to the transducer surfaces. The S/N-ratio was larger than or in the same range as that of the two comparing methods. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
AMUM 2004: Advanced Metrology for Ultrasound in Medicine 2004
volume
1
pages
150 - 154
publisher
IOP Publishing
conference name
Conference on Advanced Metrology for Ultrasound in Medicine (AMUN 2004)
external identifiers
  • wos:000228811800034
ISSN
1742-6588
1742-6596
DOI
10.1088/1742-6596/1/1/034
language
English
LU publication?
yes
id
3037b867-6c6f-4467-abb9-d1f67eea9531 (old id 1406195)
date added to LUP
2009-06-08 13:10:22
date last changed
2016-04-15 19:52:54
@inproceedings{3037b867-6c6f-4467-abb9-d1f67eea9531,
  abstract     = {The aim of this work was to show the applicability of light diffraction tomography on airborne ultrasound. Different air-coupled transducers in the frequency range 40 kHz - 2 MHz were measured to show the method's performance. A calibrated microphone and the pulse-echo method were used to evaluate the results. The absolute measurements agreed within the calibrated microphone's uncertainty range. Pulse waveforms and corresponding FFT-diagrams show the method's higher bandwidth compared to the microphone. Further, the method offers non-perturbing measurements with high spatial resolution, which was especially advantageous for measurements close to the transducer surfaces. The S/N-ratio was larger than or in the same range as that of the two comparing methods.},
  author       = {Almqvist, Monica and Persson, Hans W and Lindström, Kjell},
  booktitle    = {AMUM 2004: Advanced Metrology for Ultrasound in Medicine 2004},
  issn         = {1742-6588},
  language     = {eng},
  pages        = {150--154},
  publisher    = {IOP Publishing},
  title        = {Ultrasound field characterisation in air using light diffraction tomography},
  url          = {http://dx.doi.org/10.1088/1742-6596/1/1/034},
  volume       = {1},
  year         = {2004},
}