Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging. / Nguyen, Tin Quoc; Traberg, Marie Sand; Olesen, Jacob Bjerring; Heerwagen, Søren Thorup; Brandt, Andreas Hjelm; Bechsgaard, Thor; Pedersen, Brian Lindegaard; Moshavegh, Ramin; Lönn, Lars; Jensen, Jørgen Arendt; Nielsen, Michael Bachmann; Hansen, Kristoffer Lindskov.

In: Ultrasound in Medicine and Biology, Vol. 46, No. 9, 2020, p. 2493-2504.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Nguyen, TQ, Traberg, MS, Olesen, JB, Heerwagen, ST, Brandt, AH, Bechsgaard, T, Pedersen, BL, Moshavegh, R, Lönn, L, Jensen, JA, Nielsen, MB & Hansen, KL 2020, 'Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging', Ultrasound in Medicine and Biology, vol. 46, no. 9, pp. 2493-2504. https://doi.org/10.1016/j.ultrasmedbio.2020.05.021

APA

Nguyen, T. Q., Traberg, M. S., Olesen, J. B., Heerwagen, S. T., Brandt, A. H., Bechsgaard, T., Pedersen, B. L., Moshavegh, R., Lönn, L., Jensen, J. A., Nielsen, M. B., & Hansen, K. L. (2020). Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging. Ultrasound in Medicine and Biology, 46(9), 2493-2504. https://doi.org/10.1016/j.ultrasmedbio.2020.05.021

Vancouver

Nguyen TQ, Traberg MS, Olesen JB, Heerwagen ST, Brandt AH, Bechsgaard T et al. Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging. Ultrasound in Medicine and Biology. 2020;46(9):2493-2504. https://doi.org/10.1016/j.ultrasmedbio.2020.05.021

Author

Nguyen, Tin Quoc ; Traberg, Marie Sand ; Olesen, Jacob Bjerring ; Heerwagen, Søren Thorup ; Brandt, Andreas Hjelm ; Bechsgaard, Thor ; Pedersen, Brian Lindegaard ; Moshavegh, Ramin ; Lönn, Lars ; Jensen, Jørgen Arendt ; Nielsen, Michael Bachmann ; Hansen, Kristoffer Lindskov. / Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging. In: Ultrasound in Medicine and Biology. 2020 ; Vol. 46, No. 9. pp. 2493-2504.

Bibtex

@article{464c2b39c1904b52bc81ea7c2b845aa5,
title = "Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging",
abstract = "Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). Vector concentration is less affected by aliasing in severe stenoses and correlates with DSA in patients with dysfunctional AVF.",
keywords = "Arteriovenous dialysis fistula, Digital subtraction angiography, Flow complexity, Patient study, Phantom study, Spectral Doppler ultrasound, Stenosis assessment, Vector flow imaging",
author = "Nguyen, {Tin Quoc} and Traberg, {Marie Sand} and Olesen, {Jacob Bjerring} and Heerwagen, {S{\o}ren Thorup} and Brandt, {Andreas Hjelm} and Thor Bechsgaard and Pedersen, {Brian Lindegaard} and Ramin Moshavegh and Lars L{\"o}nn and Jensen, {J{\o}rgen Arendt} and Nielsen, {Michael Bachmann} and Hansen, {Kristoffer Lindskov}",
year = "2020",
doi = "10.1016/j.ultrasmedbio.2020.05.021",
language = "English",
volume = "46",
pages = "2493--2504",
journal = "Ultrasound in Medicine & Biology",
issn = "0301-5629",
publisher = "Elsevier",
number = "9",

}

RIS

TY - JOUR

T1 - Flow Complexity Estimation in Dysfunctional Arteriovenous Dialysis Fistulas using Vector Flow Imaging

AU - Nguyen, Tin Quoc

AU - Traberg, Marie Sand

AU - Olesen, Jacob Bjerring

AU - Heerwagen, Søren Thorup

AU - Brandt, Andreas Hjelm

AU - Bechsgaard, Thor

AU - Pedersen, Brian Lindegaard

AU - Moshavegh, Ramin

AU - Lönn, Lars

AU - Jensen, Jørgen Arendt

AU - Nielsen, Michael Bachmann

AU - Hansen, Kristoffer Lindskov

PY - 2020

Y1 - 2020

N2 - Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). Vector concentration is less affected by aliasing in severe stenoses and correlates with DSA in patients with dysfunctional AVF.

AB - Non-invasive assessment is preferred for monitoring arteriovenous dialysis fistulas (AVFs). Vector concentration assesses flow complexity, which may correlate with stenosis severity. We determined whether vector concentration could assess stenosis severity in dysfunctional AVFs. Vector concentration was estimated in four stenotic phantoms at different pulse repetition frequencies. Spectral Doppler peak velocity and vector concentration were measured in 12 patients with dysfunctional AVFs. Additionally, 5 patients underwent digital subtraction angiography (DSA). In phantoms, vector concentration exhibited an inverse relationship with stenosis severity and was less affected by aliasing in severe stenoses. In nine stenoses of 5 patients undergoing DSA, vector concentration correlated strongly with stenosis severity (first stenosis: r = –0.73, p = 0.04; other stenoses; r = –0.69, p = 0.02) and mid-stenotic diameter (first stenosis: r = 0.87, p = 0.006; other stenoses: r = 0.70, p = 0.02) as opposed to peak velocities (p > 0.05). Vector concentration is less affected by aliasing in severe stenoses and correlates with DSA in patients with dysfunctional AVF.

KW - Arteriovenous dialysis fistula

KW - Digital subtraction angiography

KW - Flow complexity

KW - Patient study

KW - Phantom study

KW - Spectral Doppler ultrasound

KW - Stenosis assessment

KW - Vector flow imaging

U2 - 10.1016/j.ultrasmedbio.2020.05.021

DO - 10.1016/j.ultrasmedbio.2020.05.021

M3 - Journal article

C2 - 32595057

AN - SCOPUS:85086908979

VL - 46

SP - 2493

EP - 2504

JO - Ultrasound in Medicine & Biology

JF - Ultrasound in Medicine & Biology

SN - 0301-5629

IS - 9

ER -

ID: 250550493