Carotid stenosis assessment with vector concentration before and after stenting
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Carotid stenosis assessment with vector concentration before and after stenting. / Brandt, Andreas Hjelm; Nguyen, Tin Quoc; Gutte, Henrik; Carlsen, Jonathan Frederik; Moshavegh, Ramin; Jensen, Jørgen Arendt; Nielsen, Michael Bachmann; Hansen, Kristoffer Lindskov.
In: Diagnostics, Vol. 10, No. 6, 420, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Carotid stenosis assessment with vector concentration before and after stenting
AU - Brandt, Andreas Hjelm
AU - Nguyen, Tin Quoc
AU - Gutte, Henrik
AU - Carlsen, Jonathan Frederik
AU - Moshavegh, Ramin
AU - Jensen, Jørgen Arendt
AU - Nielsen, Michael Bachmann
AU - Hansen, Kristoffer Lindskov
PY - 2020
Y1 - 2020
N2 - Digital subtraction angiography (DSA) is considered the reference method for the assessment of carotid artery stenosis; however, the procedure is invasive and accompanied by ionizing radiation. Velocity estimation with duplex ultrasound (DUS) is widely used for carotid artery stenosis assessment since no radiation or intravenous contrast is required; however, the method is angle-dependent. Vector concentration (VC) is a parameter for flow complexity assessment derived from the angle independent ultrasound method vector flow imaging (VFI), and VC has shown to correlate strongly with stenosis degree. The aim of this study was to compare VC estimates and DUS estimated peak-systolic (PSV) and end-diastolic velocities (EDV) for carotid artery stenosis patients, with the stenosis degree obtained with DSA. Eleven patients with symptomatic carotid artery stenosis were examined with DUS, VFI, and DSA before and after stent treatment. Compared to DSA, VC showed a strong correlation (r = −0.79, p < 0.001), while PSV (r = 0.68, p = 0.002) and EDV (r = 0.51, p = 0.048) obtained with DUS showed a moderate correlation. VFI using VC calculations may be a useful ultrasound method for carotid artery stenosis and stent patency assessment.
AB - Digital subtraction angiography (DSA) is considered the reference method for the assessment of carotid artery stenosis; however, the procedure is invasive and accompanied by ionizing radiation. Velocity estimation with duplex ultrasound (DUS) is widely used for carotid artery stenosis assessment since no radiation or intravenous contrast is required; however, the method is angle-dependent. Vector concentration (VC) is a parameter for flow complexity assessment derived from the angle independent ultrasound method vector flow imaging (VFI), and VC has shown to correlate strongly with stenosis degree. The aim of this study was to compare VC estimates and DUS estimated peak-systolic (PSV) and end-diastolic velocities (EDV) for carotid artery stenosis patients, with the stenosis degree obtained with DSA. Eleven patients with symptomatic carotid artery stenosis were examined with DUS, VFI, and DSA before and after stent treatment. Compared to DSA, VC showed a strong correlation (r = −0.79, p < 0.001), while PSV (r = 0.68, p = 0.002) and EDV (r = 0.51, p = 0.048) obtained with DUS showed a moderate correlation. VFI using VC calculations may be a useful ultrasound method for carotid artery stenosis and stent patency assessment.
KW - Carotid artery stenosis
KW - Digital subtraction angiography
KW - Duplex ultrasound
KW - Stenosis degree
KW - Vector concentration
KW - Vector flow imaging
U2 - 10.3390/diagnostics10060420
DO - 10.3390/diagnostics10060420
M3 - Journal article
C2 - 32575759
AN - SCOPUS:85089244383
VL - 10
JO - Diagnostics
JF - Diagnostics
SN - 2075-4418
IS - 6
M1 - 420
ER -
ID: 251579475