Doppler ultrasound signal spectral response in the measurement of the blood flow turbulence caused by stenosis

Solano, J.; Vázquez, M.; Rubio, E.; Sánchez, Ignacio Escotto; Fuentes, M.; García, Fernando Flores

doi:10.1016/j.phpro.2010.01.077

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…A common approach for vascular flow imaging is based on the Doppler effect, widely used in ultrasound and readily adopted for OCT [25,26]. One of the chal lenges in Doppler imaging is the uncertainly associ ated with the angle between the flowing blood and the interrogating beam, as its value directly influences the measured frequency (phase) shift [17].…”

Section: Speckle Variance Optical Coherence Tomography (Svoct)mentioning

confidence: 99%

Quantification of glucose levels in flowing blood using M-mode swept source optical coherence tomography

et al. 2012

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The increase of glucose levels in blood changes the viscosity of flowing fluids and shape of the erythrocytes. Both of these can affect the details of light scattering as can be quantified via decorrelation times measured by optical coherence tomography (OCT). The relative contributions of these competing effects have been studied by examining the motion dynamics of deformable asymmetrical (red blood cells, RBCs with ~7 µm diameter and ~2 µm thickness) and non deformable symmetrical (polystyrene microspheres, PSM with 1.4 µm diameter) flowing scattering particles. The fluid flow under the action of gravity was mod ulated by changing the glucose concentrations. Quantitative analysis of the OCT's M mode autocorrelation functions enabled the derivations of the translational diffusion coefficients. These systematic studies are aimed at eventual tissue imaging scenarios with speckle variance OCT to obtain local glucose concentrations maps.

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Section: Speckle Variance Optical Coherence Tomography (Svoct)mentioning

confidence: 99%

Quantification of glucose levels in flowing blood using M-mode swept source optical coherence tomography

et al. 2012

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“…Os mapeamentos coloridos permitem a análise da presença ou ausência do fluxo, direção do fluxo, velocidade média e presença ou não de turbulência dentro do vaso (SOLANO et al 2010). A ausência de sinal Doppler, ou seja, de cor em um determinado segmento de um vaso ou em parte dele, pode sugerir oclusão, trombose ou estenose do mesmo, uma vez descartada a possibilidade de artefato de técnica (SOLANO et al 2010;NAKAMURA et al 2008).…”

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Ultrassonografia Doppler Colorido E Doppler Espectral Para O Estudo De Pequenos Fluxos

Castelló¹,

Bragato²,

Martins³

et al. 2015

Enciclopédia Biosfera

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RESUMO A ultrassonografia Doppler é uma ferramenta importante no estudo do mapeamento de fluxo em várias lesões. Com o objetivo de apresentar essa técnica para o estudo de pequenos vasos e microcirculação na medicina veterinária, esta revisão discorre sobre a matéria. Com este artigo de revisão são tecidas informações relativas aos princípios físicos, métodos de exibição, interpretação da imagem, possíveis artefatos e algumas das aplicações da ultrassonografia Doppler no exame de pequenos vasos e microcirculação.

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FluxCABG: flujometría intraoperatoria en la cirugía de revascularización miocárdica como factor pronóstico de eventos cardiacos mayores

Ramírez

Nafeh-Abi-Rezk

Tamargo-Barbeito

et al. 2022

Cirugía Cardiovascular

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Doppler ultrasound signal spectral response in the measurement of the blood flow turbulence caused by stenosis

Cited by 7 publications

References 3 publications

Quantification of glucose levels in flowing blood using M-mode swept source optical coherence tomography

Quantification of glucose levels in flowing blood using M-mode swept source optical coherence tomography

Ultrassonografia Doppler Colorido E Doppler Espectral Para O Estudo De Pequenos Fluxos

FluxCABG: flujometría intraoperatoria en la cirugía de revascularización miocárdica como factor pronóstico de eventos cardiacos mayores

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