Acoustic Field of a Medical Ultrasound Probe Operated in Continuous-Wave Mode Investigated by TV Holography
Time-averaged TV holography has been shown to be a useful technique for investigating acoustic fields in transparent media. The theory of time-averaged TV-holography measurements of ultrasonic fields in water is described. Projections of the phase and the amplitude of a 3.25-MHz ultrasonic field fro...
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| Published in | Applied optics (2004) Vol. 37; no. 31; p. 7368 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.11.1998
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| Online Access | Get more information |
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| Summary: | Time-averaged TV holography has been shown to be a useful technique for investigating acoustic fields in transparent media. The theory of time-averaged TV-holography measurements of ultrasonic fields in water is described. Projections of the phase and the amplitude of a 3.25-MHz ultrasonic field from an annular ultrasound probe operated in cw mode are presented. Quantitative measurements with a spatial resolution of better than 100 mum have been obtained. A set of such projections may be processed into a three-dimensional mapping of the phase and the amplitude of the acoustic field by tomographic techniques. This process is described, and an example of a tomographic reconstruction of the same ultrasonic field is presented. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.37.007368 |