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231223s1988 xx ||||| 00| ||eng c |
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|a (NLM)18290186
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|a eng
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| 100 |
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|a Tortoli, P
|e verfasserin
|4 aut
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|a Blood flow images by a SAW-based multigate Doppler system
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|c 1988
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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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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 02.10.2012
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|a Date Revised 21.02.2008
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Multigate operation of an ultrasound pulsed Doppler flowmeter, providing Doppler frequency detection in a number of adjacent sample volumes, is capable of displaying the instantaneous blood velocity distribution along the cross section of a sonified vessel. Real-time serial Doppler processing of 32 range cells has been implemented in a novel system using fast spectral analysis based on surface-acoustic wave (SAW) dispersive filters. The basic architecture and first in vitro experiments were reported previously. The in vivo application of the system is described here, and images of human carotid artery and jugular vein are presented. Appropriate display formats are introduced to use the great amount of information known on spatial and temporal behavior of flow profiles. Digital postprocessing of spectral Doppler data allows velocity profiles to be displayed at selected times to correlate spatial and temporal evolution. A color code can be used to represent different velocity strengths. The potential application of the system to two-dimensional (2-D) flow imaging is discussed
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|a Journal Article
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|a Andreuccetti, F
|e verfasserin
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|a Manes, G
|e verfasserin
|4 aut
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|a Atzeni, C
|e verfasserin
|4 aut
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|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 35(1988), 5 vom: 15., Seite 545-51
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:35
|g year:1988
|g number:5
|g day:15
|g pages:545-51
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|d 35
|j 1988
|e 5
|b 15
|h 545-51
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