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231223s1992 xx ||||| 00| ||eng c |
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|a pubmed24n0592.xml
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|a (DE-627)NLM17755035X
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|a (NLM)18267692
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Ferrara, K W
|e verfasserin
|4 aut
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|a The effect of frequency dependent scattering and attenuation on the estimation of blood velocity using ultrasound
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|c 1992
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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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| 500 |
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|a Date Completed 02.10.2012
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|a Date Revised 12.02.2008
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a A comprehensive theoretical performance comparison of the wideband maximum-likelihood (WMLE) and cross-correlation strategies, previously proposed and evaluated for the estimation of blood velocity using ultrasound is presented. It is based on evaluation of the bias, local and global accuracy, and signal-to-noise ratio (SNR) performance. The results show that the intervening medium does not bias either wideband estimation, due to the effect of tracking the scattering target. The presence of intervening tissue actually improves the global accuracy of both wideband estimators, without a significant change in the local accuracy of either wideband estimator. After the transmission of P pulses, a comparison of the performance of the two strategies shows that the cross-correlation estimator requires P(2 ) correlations to achieve performance similar to that of the WMLE with P operations. In addition, the WMLE can increase the effective SNR in comparison with cross correlation
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|a Journal Article
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|a Algazi, V R
|e verfasserin
|4 aut
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| 700 |
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|a Liu, J
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 39(1992), 6 vom: 28., Seite 754-67
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:39
|g year:1992
|g number:6
|g day:28
|g pages:754-67
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_ILN_24
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|a GBV_ILN_350
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| 951 |
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|a AR
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| 952 |
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|d 39
|j 1992
|e 6
|b 28
|h 754-67
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