Doppler ultrasound velocity estimation

1997 ◽  
Vol 101 (5) ◽  
pp. 2431
Author(s):  
Jin H. Kim ◽  
Dong-Chyan Liu
Keyword(s):  
Doppler Ultrasound ◽  
Ultrasound Velocity ◽  
Velocity Estimation

Automated analysis of Doppler ultrasound velocity flow diagrams

2001 ◽  
Vol 20 (12) ◽  
pp. 1422-1425 ◽  
Author(s):  
J. Tschirren ◽  
R.M. Lauer ◽  
M. Sonka
Keyword(s):  
Doppler Ultrasound ◽  
Ultrasound Velocity ◽  
Automated Analysis ◽  
Velocity Flow ◽  
Flow Diagrams

Flow System to Detect Transitional Flow Based on Pulsed Doppler Ultrasound Velocity Profiles

2012 ◽  
Author(s):  
Narender Ambati ◽  
Dipankar Biswas ◽  
Francis Loth ◽  
Stanley E. Rittgers ◽  
Steven A. Jones
Keyword(s):  
Reynolds Number ◽  
Doppler Ultrasound ◽  
Critical Reynolds Number ◽  
Flow System ◽  
Ultrasound Velocity ◽  
Transition To Turbulence ◽  
Transitional Flow ◽  
Working Fluid ◽  
Pulsed Doppler Ultrasound

A flow circuit test rig has been constructed to determine the critical Reynolds number at which blood flow become turbulent. A Doppler ultrasound velocimeter was used in an in vitro flow system to measure the velocity of water inside a straight pipe in order to determine the critical Reynolds number (Re) at which the flow becomes transitional. Results using water as the working fluid demonstrated flow-transition to turbulence near Re = 2000 which is close to the expected value from literature. Future studies will utilize blood as the working fluid.

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