Advanced search
1 file | 836.21 KB

Numerical assessment of the impact of a flow wire on its velocity measurements

Author
Organization
Abstract
Blood flow velocities can be measured using a Doppler flow wire. This numerical study evaluates the impact of a 0.014" flow wire on the measured frequencies in a straight artery with diameters of 3 mm and 4 rum. under steady and pulsatile flow conditions. Simulations were performed with the wires positioned differently in the artery (perfectly centred and at an offset of 0.5 mm from the wall) and with different types of wire (tilted and straight). Measurements were taken at range gates from 4 mm to 10 mm. During simulations using a 3-mm vessel under pulsatile flow conditions, the relative error between the measured and reference maximum frequency (occurring in absence of the wire) decreased from 17.7% to 11.6% (with a mean value of 14.9%). During simulations using an off-centre 1.5 degree tilted wire. the mean error was approximately 5%. Therefore, our study suggests that that a centrally positioned flow wire is unfavourable for measuring flow velocities.
Keywords
flow wire, CFD, velocity measurements, ultrasound, BLOOD-FLOW, IN-VITRO, GUIDE-WIRE, DOPPLER, CATHETER, VALIDATION, PROFILES, ARTERY, STENOSES, DISTAL

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 836.21 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Hillewaert, Wim, Kathy Courtens, Myles McLaughlin, Joost Wauters, Alexander Wilmer, Bart Bijnens, Piet Claus, Pascal Verdonck, Paul Devos, and Patrick Segers. 2006. “Numerical Assessment of the Impact of a Flow Wire on Its Velocity Measurements.” Ultrasound in Medicine and Biology 32 (7): 1025–1036.
APA
Hillewaert, Wim, Courtens, K., McLaughlin, M., Wauters, J., Wilmer, A., Bijnens, B., Claus, P., et al. (2006). Numerical assessment of the impact of a flow wire on its velocity measurements. ULTRASOUND IN MEDICINE AND BIOLOGY, 32(7), 1025–1036.
Vancouver
1.
Hillewaert W, Courtens K, McLaughlin M, Wauters J, Wilmer A, Bijnens B, et al. Numerical assessment of the impact of a flow wire on its velocity measurements. ULTRASOUND IN MEDICINE AND BIOLOGY. 2006;32(7):1025–36.
MLA
Hillewaert, Wim, Kathy Courtens, Myles McLaughlin, et al. “Numerical Assessment of the Impact of a Flow Wire on Its Velocity Measurements.” ULTRASOUND IN MEDICINE AND BIOLOGY 32.7 (2006): 1025–1036. Print.
@article{371725,
  abstract     = {Blood flow velocities can be measured using a Doppler flow wire. This numerical study evaluates the impact of a 0.014{\textacutedbl} flow wire on the measured frequencies in a straight artery with diameters of 3 mm and 4 rum. under steady and pulsatile flow conditions. Simulations were performed with the wires positioned differently in the artery (perfectly centred and at an offset of 0.5 mm from the wall) and with different types of wire (tilted and straight). Measurements were taken at range gates from 4 mm to 10 mm. During simulations using a 3-mm vessel under pulsatile flow conditions, the relative error between the measured and reference maximum frequency (occurring in absence of the wire) decreased from 17.7\% to 11.6\% (with a mean value of 14.9\%). During simulations using an off-centre 1.5 degree tilted wire. the mean error was approximately 5\%. Therefore, our study suggests that that a centrally positioned flow wire is unfavourable for measuring flow velocities.},
  author       = {Hillewaert, Wim and Courtens, Kathy and McLaughlin, Myles and Wauters, Joost and Wilmer, Alexander and Bijnens, Bart and Claus, Piet and Verdonck, Pascal and Devos, Paul and Segers, Patrick},
  issn         = {0301-5629},
  journal      = {ULTRASOUND IN MEDICINE AND BIOLOGY},
  keyword      = {flow wire,CFD,velocity measurements,ultrasound,BLOOD-FLOW,IN-VITRO,GUIDE-WIRE,DOPPLER,CATHETER,VALIDATION,PROFILES,ARTERY,STENOSES,DISTAL},
  language     = {eng},
  number       = {7},
  pages        = {1025--1036},
  title        = {Numerical assessment of the impact of a flow wire on its velocity measurements},
  url          = {http://dx.doi.org/10.1016/j.ultrasmedbio.2006.03.016},
  volume       = {32},
  year         = {2006},
}

Altmetric
View in Altmetric
Web of Science
Times cited: