TY - JOUR
T1 - Volume flow in arteriovenous fistulas using vector velocity ultrasound
AU - Hansen, Peter Møller
AU - Olesen, Jacob Bjerring
AU - Pihl, Michael Johannes
AU - Lange, Theis
AU - Heerwagen, Søren
AU - Pedersen, Mads Møller
AU - Rix, Marianne
AU - Lönn, Lars
AU - Jensen, Jørgen Arendt
AU - Nielsen, Michael Bachmann
N1 - Copyright © 2014 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - Volume flow in arteriovenous fistulas for hemodialysis was measured using the angle-independent ultrasound technique Vector Flow Imaging and compared with flow measurements using the ultrasound dilution technique during dialysis. Using an UltraView 800 ultrasound scanner (BK Medical, Herlev, Denmark) with a linear transducer, 20 arteriovenous fistulas were scanned directly on the most superficial part of the fistula just before dialysis. Vector Flow Imaging volume flow was estimated with two different approaches, using the maximum and the average flow velocities detected in the fistula. Flow was estimated to be 242 mL/min and 404 mL/min lower than the ultrasound dilution technique estimate, depending on the approach. The standard deviations of the two Vector Flow Imaging approaches were 175.9 mL/min and 164.8 mL/min compared with a standard deviation of 136.9 mL/min using the ultrasound dilution technique. The study supports that Vector Flow Imaging is applicable for volume flow measurements.
AB - Volume flow in arteriovenous fistulas for hemodialysis was measured using the angle-independent ultrasound technique Vector Flow Imaging and compared with flow measurements using the ultrasound dilution technique during dialysis. Using an UltraView 800 ultrasound scanner (BK Medical, Herlev, Denmark) with a linear transducer, 20 arteriovenous fistulas were scanned directly on the most superficial part of the fistula just before dialysis. Vector Flow Imaging volume flow was estimated with two different approaches, using the maximum and the average flow velocities detected in the fistula. Flow was estimated to be 242 mL/min and 404 mL/min lower than the ultrasound dilution technique estimate, depending on the approach. The standard deviations of the two Vector Flow Imaging approaches were 175.9 mL/min and 164.8 mL/min compared with a standard deviation of 136.9 mL/min using the ultrasound dilution technique. The study supports that Vector Flow Imaging is applicable for volume flow measurements.
U2 - 10.1016/j.ultrasmedbio.2014.06.004
DO - 10.1016/j.ultrasmedbio.2014.06.004
M3 - Journal article
C2 - 25282482
SN - 0301-5629
VL - 40
SP - 2707
EP - 2714
JO - Ultrasound in Medicine & Biology
JF - Ultrasound in Medicine & Biology
IS - 11
ER -