Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study

Purpose Continuous wave Doppler ultrasound is routinely used to detect cardiac valve stenoses. Vector flow imaging (VFI) is an angle-independent real-time ultrasound method that can quantify flow complexity. We aimed to evaluate if quantifi...

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Autores principales:	Tin-Quoc Nguyen, Thor Bechsgaard, Michael Rahbek Schmidt, Klaus Juul, Ramin Moshavegh, Lars Lönn, Michael Bachmann Nielsen, Jørgen Arendt Jensen, Kristoffer Lindskov Hansen
Formato:	article
Lenguaje:	EN
Publicado:	Georg Thieme Verlag KG 2021
Materias:	catheters echocardiography vector flow imaging, valvular stenosis, pressure gradient Medicine R Medical physics. Medical radiology. Nuclear medicine R895-920
Acceso en línea:	https://doaj.org/article/2b1c9027b406464db00ca3e992126796
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spelling	oai:doaj.org-article:2b1c9027b406464db00ca3e9921267962021-11-18T00:06:51ZTransthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study2509-596X2199-715210.1055/a-1652-1261https://doaj.org/article/2b1c9027b406464db00ca3e9921267962021-08-01T00:00:00Zhttp://www.thieme-connect.de/DOI/DOI?10.1055/a-1652-1261https://doaj.org/toc/2509-596Xhttps://doaj.org/toc/2199-7152Purpose Continuous wave Doppler ultrasound is routinely used to detect cardiac valve stenoses. Vector flow imaging (VFI) is an angle-independent real-time ultrasound method that can quantify flow complexity. We aimed to evaluate if quantification of flow complexity could reliably assess valvular stenosis in pediatric patients. Materials and Methods Nine pediatric patients with echocardiographically confirmed valvular stenosis were included in the study. VFI and Doppler measurements were compared with transvalvular peak-to-peak pressure differences derived from invasive endovascular catheterization. Results Vector concentration correlated with the catheter measurements before intervention after exclusion of one outlier (r=−0.83, p=0.01), whereas the Doppler method did not (r=0.49, p=0.22). The change in vector concentration after intervention correlated strongly with the change in the measured catheter pressure difference (r=−0.86, p=0.003), while Doppler showed a tendency for a moderate correlation (r=0.63, p=0.07). Conclusion Transthoracic flow complexity quantification calculated from VFI data is feasible and may be useful for assessing valvular stenosis severity in pediatric patients.Tin-Quoc NguyenThor BechsgaardMichael Rahbek SchmidtKlaus JuulRamin MoshaveghLars LönnMichael Bachmann NielsenJørgen Arendt JensenKristoffer Lindskov HansenGeorg Thieme Verlag KGarticlecathetersechocardiographyvector flow imaging, valvular stenosis, pressure gradientMedicineRMedical physics. Medical radiology. Nuclear medicineR895-920ENUltrasound International Open, Vol 07, Iss 02, Pp E48-E54 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	catheters echocardiography vector flow imaging, valvular stenosis, pressure gradient Medicine R Medical physics. Medical radiology. Nuclear medicine R895-920
spellingShingle	catheters echocardiography vector flow imaging, valvular stenosis, pressure gradient Medicine R Medical physics. Medical radiology. Nuclear medicine R895-920 Tin-Quoc Nguyen Thor Bechsgaard Michael Rahbek Schmidt Klaus Juul Ramin Moshavegh Lars Lönn Michael Bachmann Nielsen Jørgen Arendt Jensen Kristoffer Lindskov Hansen Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
description	Purpose Continuous wave Doppler ultrasound is routinely used to detect cardiac valve stenoses. Vector flow imaging (VFI) is an angle-independent real-time ultrasound method that can quantify flow complexity. We aimed to evaluate if quantification of flow complexity could reliably assess valvular stenosis in pediatric patients. Materials and Methods Nine pediatric patients with echocardiographically confirmed valvular stenosis were included in the study. VFI and Doppler measurements were compared with transvalvular peak-to-peak pressure differences derived from invasive endovascular catheterization. Results Vector concentration correlated with the catheter measurements before intervention after exclusion of one outlier (r=−0.83, p=0.01), whereas the Doppler method did not (r=0.49, p=0.22). The change in vector concentration after intervention correlated strongly with the change in the measured catheter pressure difference (r=−0.86, p=0.003), while Doppler showed a tendency for a moderate correlation (r=0.63, p=0.07). Conclusion Transthoracic flow complexity quantification calculated from VFI data is feasible and may be useful for assessing valvular stenosis severity in pediatric patients.
format	article
author	Tin-Quoc Nguyen Thor Bechsgaard Michael Rahbek Schmidt Klaus Juul Ramin Moshavegh Lars Lönn Michael Bachmann Nielsen Jørgen Arendt Jensen Kristoffer Lindskov Hansen
author_facet	Tin-Quoc Nguyen Thor Bechsgaard Michael Rahbek Schmidt Klaus Juul Ramin Moshavegh Lars Lönn Michael Bachmann Nielsen Jørgen Arendt Jensen Kristoffer Lindskov Hansen
author_sort	Tin-Quoc Nguyen
title	Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
title_short	Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
title_full	Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
title_fullStr	Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
title_full_unstemmed	Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study
title_sort	transthoracic vector flow imaging in pediatric patients with valvular stenosis – a proof of concept study
publisher	Georg Thieme Verlag KG
publishDate	2021
url	https://doaj.org/article/2b1c9027b406464db00ca3e992126796
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Transthoracic Vector Flow Imaging in Pediatric Patients with Valvular Stenosis – A Proof of Concept Study

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