TY - JOUR
T1 - Vector Flow Imaging Compared with Digital Subtraction Angiography for Stenosis Assessment in the Superficial Femoral Artery - A Study of Vector Concentration, Velocity Ratio and Stenosis Degree Percentage
AU - Hansen, Kristoffer Lindskov
AU - Hansen, Peter Møller
AU - Ewertsen, Caroline
AU - Lönn, Lars
AU - Jensen, Jørgen Arendt
AU - Nielsen, Michael Bachmann
PY - 2019
Y1 - 2019
N2 - Stenosis of the superficial femoral artery (SFA) induces complex blood flow with increased velocities. Disease assessment is performed with Doppler ultrasound and digital subtraction angiography (DSA), but Doppler ultrasound is limited by angle dependency and DSA by ionizing radiation. An alternative is the vector flow imaging method based on transverse oscillation (TO), an angle-independent vector velocity technique using ultrasound. In this study, flow complexity and velocity measured with TO were compared with DSA for the assessment of stenosis in the SFA. The vector concentration, a measure of flow complexity, and the velocity ratio obtained from the stenosis and a disease-free adjacent vessel segment, were estimated with TO in 11 patients with a total of 16 stenoses of the SFA. TO data were compared with the corresponding stenosis degree percentage obtained with DSA. The correlation between the vector concentration and DSA was very strong (R=0.93; p
AB - Stenosis of the superficial femoral artery (SFA) induces complex blood flow with increased velocities. Disease assessment is performed with Doppler ultrasound and digital subtraction angiography (DSA), but Doppler ultrasound is limited by angle dependency and DSA by ionizing radiation. An alternative is the vector flow imaging method based on transverse oscillation (TO), an angle-independent vector velocity technique using ultrasound. In this study, flow complexity and velocity measured with TO were compared with DSA for the assessment of stenosis in the SFA. The vector concentration, a measure of flow complexity, and the velocity ratio obtained from the stenosis and a disease-free adjacent vessel segment, were estimated with TO in 11 patients with a total of 16 stenoses of the SFA. TO data were compared with the corresponding stenosis degree percentage obtained with DSA. The correlation between the vector concentration and DSA was very strong (R=0.93; p
KW - Digital subtraction angiography
KW - Peripheral arterial disease
KW - Vector concentration
KW - Vector flow imaging
KW - Velocity ratio
U2 - 10.1055/a-0853-2002
DO - 10.1055/a-0853-2002
M3 - Journal article
C2 - 30886943
SN - 2199-7152
VL - 5
SP - E53-E59
JO - Ultrasound International Open
JF - Ultrasound International Open
IS - 2
ER -