Two-dimensional measurement of blood flow velocity in rat arteries based on ultrasonic particle image velocimetry / 南方医科大学学报
Journal of Southern Medical University
; (12): 1305-1309, 2014.
Article
em Zh
| WPRIM
| ID: wpr-312583
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>Ultrasonic pulse wave Doppler technique for noninvasive blood flow imaging does not provide precise information of complex blood flow field, and observing two-dimensional artery blood flow field distribution provides important clinical information for cardiovascular disease.</p><p><b>METHODS</b>Ultrasonic particle image velocimetry (Echo PIV) was used to measure blood flows on B-mode ultrasonic particle image to assess the whole field velocity of the blood vessels in 5 groups of healthy rats. The reliability of Echo PIV was verified in comparison with ultrasonic Doppler method in 3 cardiac cycles.</p><p><b>RESULTS AND CONCLUSION</b>The results of Echo PIV were similar with the those of ultrasound spectral Doppler. The Echo PIV-measured peak and average velocity within 3 cardiac cycles were about 5%-10% and 2%-8% below the values measured by the ultrasonic spectral Doppler, respectively, but these differences were not statistically significant (P>0.05). As a new technique for monitoring complex blood flow in stenotic arteries, echo PIV can be used to directly and non-invasively assess whole field hemodynamic changes in blood vessels in real time and distinguish different groups of rats by velocity.</p>
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Artérias
/
Reologia
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Ultrassom
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Velocidade do Fluxo Sanguíneo
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Diagnóstico por Imagem
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Reprodutibilidade dos Testes
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Ultrassonografia
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Hemodinâmica
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
Zh
Revista:
Journal of Southern Medical University
Ano de publicação:
2014
Tipo de documento:
Article