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231223s2007 xx ||||| 00| ||eng c |
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|a (NLM)18051165
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|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a White, Phillip J
|e verfasserin
|4 aut
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| 245 |
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|a Two-dimensional localization with a single diffuse ultrasound field excitation
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 03.01.2008
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|a Date Revised 10.12.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a Traditional ultrasound imaging methods rely on the bandwidth and center frequency of transduction to achieve axial and radial image resolution, respectively. In this study, a new modality for spatially localizing scattering targets in a two-dimensional field is presented. In this method, the bandwidth of field excitation is high, and the center frequency is lowered such that the corresponding wavelengths are substantially larger than the target profiles. Furthermore, full two-dimensional field measurements are obtained with single send-receive sequences, demonstrating a substantial simplification of the traditional scanning techniques. Field reconstruction is based on temporal-spectral cross-correlations between measured backscatter data and a library of region of interest (ROI) backscatter data measured a priori. The transducer design is based upon a wedge-shaped geometry, which was shown to yield spatially frequency-separated bandwidths of up to 156% with center frequencies of 1.38 MHz. Initial results with these send-and-receive transducer parameters and cylindrical reflection targets in a 10-mm x 10-mm ROI demonstrate two-dimensional target localization to within 0.5 mm. Spatial localization of point scatterers is demonstrated for single and multiple scattering sites
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|a Evaluation Study
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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| 700 |
1 |
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|a Clement, Greg T
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 54(2007), 11 vom: 07. Nov., Seite 2309-17
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:54
|g year:2007
|g number:11
|g day:07
|g month:11
|g pages:2309-17
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|a AR
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|d 54
|j 2007
|e 11
|b 07
|c 11
|h 2309-17
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