Ultrasound field characterisation in air using light diffraction tomography
(2004) Conference on Advanced Metrology for Ultrasound in Medicine (AMUN 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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1406195
- author
- Almqvist, Monica LU ; Persson, Hans W LU and Lindström, Kjell LU
- organization
- publishing date
- 2004
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 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)
- conference dates
- 2004-04-27 - 2004-04-28
- 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
- 2016-04-01 12:10:44
- date last changed
- 2018-11-21 20:04:40
@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}}, doi = {{10.1088/1742-6596/1/1/034}}, volume = {{1}}, year = {{2004}}, }