TY - JOUR
T1 - A Comparison Study of Vector Velocity, Spectral Doppler and Magnetic Resonance of Blood Flow in the Common Carotid Artery
AU - Brandt, Andreas Hjelm
AU - Hansen, Kristoffer Lindskov
AU - Ewertsen, Caroline
AU - Holbek, Simon
AU - Olesen, Jacob Bjerring
AU - Moshavegh, Ramin
AU - Thomsen, Carsten
AU - Jensen, Jørgen Arendt
AU - Nielsen, Michael Bachmann
N1 - Copyright © 2018 World Federation for Ultrasound in Medicine and Biology. Published by Elsevier Inc. All rights reserved.
PY - 2018/8
Y1 - 2018/8
N2 - Magnetic resonance phase contrast angiography (MRA) is the gold standard for blood flow evaluation. Spectral Doppler ultrasound (SDU) is the first clinical choice, although the method is angle dependent. Vector flow imaging (VFI) is an angle-independent ultrasound method. The aim of the study was to compare VFI- and SDU-estimated peak systolic velocities (PSV) of the common carotid artery (CCA) with PSV obtained by MRA. Furthermore, intra- and inter-observer agreement was determined. MRA estimates were significantly different from SDU estimates (left CCA: p < 0.001, right CCA: p < 0.001), but not from VFI estimates (left CCA: p = 0.28, right CCA: p = 0.18). VFI measured lower PSV in both CCAs compared with SDU (p < 0.001) with improved precision (VFI: left: 24%, right: 18%; SDU: left 38%, right: 23%). Intra- and inter-observer agreement was almost perfect for VFI and SDU (inter-observer correlation coefficient: VFI 0.88, SDU 0.91; intra-observer correlation coefficient: VFI 0.96, SDU 0.97). VFI is more accurate than SDU in evaluating PSV compared with MRA.
AB - Magnetic resonance phase contrast angiography (MRA) is the gold standard for blood flow evaluation. Spectral Doppler ultrasound (SDU) is the first clinical choice, although the method is angle dependent. Vector flow imaging (VFI) is an angle-independent ultrasound method. The aim of the study was to compare VFI- and SDU-estimated peak systolic velocities (PSV) of the common carotid artery (CCA) with PSV obtained by MRA. Furthermore, intra- and inter-observer agreement was determined. MRA estimates were significantly different from SDU estimates (left CCA: p < 0.001, right CCA: p < 0.001), but not from VFI estimates (left CCA: p = 0.28, right CCA: p = 0.18). VFI measured lower PSV in both CCAs compared with SDU (p < 0.001) with improved precision (VFI: left: 24%, right: 18%; SDU: left 38%, right: 23%). Intra- and inter-observer agreement was almost perfect for VFI and SDU (inter-observer correlation coefficient: VFI 0.88, SDU 0.91; intra-observer correlation coefficient: VFI 0.96, SDU 0.97). VFI is more accurate than SDU in evaluating PSV compared with MRA.
KW - Adult
KW - Blood Flow Velocity
KW - Carotid Artery, Common/diagnostic imaging
KW - Female
KW - Hemodynamics
KW - Humans
KW - Magnetic Resonance Angiography/methods
KW - Male
KW - Middle Aged
KW - Reference Values
KW - Ultrasonography, Doppler/methods
U2 - 10.1016/j.ultrasmedbio.2018.05.002
DO - 10.1016/j.ultrasmedbio.2018.05.002
M3 - Journal article
C2 - 29804906
SN - 0301-5629
VL - 44
SP - 1751
EP - 1761
JO - Ultrasound in Medicine & Biology
JF - Ultrasound in Medicine & Biology
IS - 8
ER -