Assessing repeatability of 3D Doppler indices obtained by static 3D and STIC power Doppler: a combined in-vivo/in-vitro flow phantom study

Assessing repeatability of 3D Doppler indices obtained by static 3D and STIC power Doppler: a combined in-vivo/in-vitro flow phantom study

Author Miyague, A. H. Google Scholar
Raine-Fenning, N. J. Google Scholar
Polanski, L. Google Scholar
Martinez, Luís Henrique Autor UNIFESP Google Scholar
Araujo Junior, Edward Autor UNIFESP Google Scholar
Pavan, T. Z. Google Scholar
Martins, W. P. Google Scholar
Institution Universidade de São Paulo (USP)
Ultrasonog & Retraining Med Sch Ribeirao Preto EU
Univ Nottingham
Universidade Federal de São Paulo (UNIFESP)
Abstract ObjectivesTo compare the variability in vascularization flow index (VFI) seen in serial acquisitions obtained using spatiotemporal image correlation (STIC) and using conventional static three-dimensional (3D) power Doppler (PD), for both in-vitro and in-vivo models, and to evaluate whether the curves formed by VFI values obtained from successive frames' in a STIC dataset are consistent and resemble the waveforms obtained by spectral Doppler analysis.MethodsThe study was divided into two parts: in the first part (the in-vitro model) we scanned a flow phantom, while in the second part (the in-vivo model) we scanned a common carotid artery. Conventional static 3D and STIC-PD datasets were alternately acquired from these two models. VFI values were assessed from 0.38-cm(3) spherical samples of the main flow region in the static 3D datasets and in every frame of the STIC datasets. the variance of the minimum, mean and maximum VFI values from each STIC dataset was compared with the variance of VFI values from the static 3D datasets.ResultsTen static 3D and 10 STIC datasets were acquired from each model. Analysis of the in-vitro and in-vivo models showed a significant reduction in the variance of VFI values obtained using STIC as compared to static datasets. Additionally, we observed that the curves formed by VFI values obtained from successive frames in each STIC dataset were consistent across different datasets and that they resembled the waveforms obtained by spectral Doppler in both models.Conclusions3D-PD indices derived from STIC are more stable than those obtained from conventional static 3D-PD datasets. the curves of VFI throughout a reconstructed cardiac cycle using STIC are repeatable and resemble those obtained by spectral Doppler analysis of the vessel. Copyright (c) 2013 ISUOG. Published by John Wiley & Sons Ltd.
Keywords Doppler ultrasonography
imaging
reproducibility
spatiotemporal image correlation
three-dimensional
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto/USP, Brazil
São Paulo Federal University, Brazil
University of Nottingham, UK
Date 2013-11-01
Published in Ultrasound in Obstetrics & Gynecology. Hoboken: Wiley-Blackwell, v. 42, n. 5, p. 571-576, 2013.
ISSN 0960-7692 (Sherpa/Romeo, impact factor)
Publisher Wiley-Blackwell
Extent 571-576
Origin http://dx.doi.org/10.1002/uog.12419
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000326165700013
URI http://repositorio.unifesp.br/handle/11600/36888

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