Haemodynamic changes in human kidney allografts following administration of nifedipine: assessment with doppler spectrum analysis

1992 ◽  
Vol 5 ◽  
pp. S17-S20 ◽  
Author(s):  
J. W. S. Merkus ◽  
L. B. Hilbrands ◽  
A. J. Hoitsma ◽  
W. N. J. C. van Asten ◽  
R. A. P. Koene ◽  
...  
Keyword(s):  
Spectrum Analysis ◽  
Human Kidney ◽  
Doppler Spectrum ◽  
Haemodynamic Changes

Doppler spectrum analysis

2012 ◽  
Vol 94-B (3) ◽  
pp. 344-347 ◽  
Author(s):  
T. Wu ◽  
P-Y. Chen ◽  
C-H. Chen ◽  
C-L. Wang
Keyword(s):  
Spectrum Analysis ◽  
Doppler Spectrum

Shear-Layer Detection in Poststenotic Flow by Spectrum Analysis of Doppler Signals

1988 ◽  
Vol 110 (4) ◽  
pp. 320-325 ◽  
Author(s):  
T. Tamura ◽  
A. Fronek
Keyword(s):  
Shear Layer ◽  
Spectrum Analysis ◽  
Doppler Shift ◽  
Continuous Wave ◽  
Reverse Flow ◽  
Separated Flow ◽  
Sample Volume ◽  
Doppler Spectrum ◽  
Doppler Signals ◽  
Shift Frequency

Spectrum analysis of the Doppler signals was performed 0.5 tube diameters downstream from an axisymmetric constriction with an area reduction of 80 percent in steady flow at a jet Reynolds number of 2840. Both pulsed and continuous wave (CW) Doppler spectra showed significant reverse flow components in the separated flow. The pulsed Doppler spectra exhibited sudden changes when the sample volume crossed the shear layer between the center jet and the separated flow. A power spectrum equation was theoretically derived from continuity of flow to define the Doppler shift frequency for the shear layer velocity. The CW Doppler spectrum showed a minimum spectrum density at a frequency which equalled the shear layer Doppler shift frequency derived from the equation. The pulsed spectra exhibited the sudden changes at the same frequency as well.

Real-time Doppler Spectrum Analysis

1982 ◽  
Vol 117 (1) ◽  
pp. 52 ◽  
Author(s):  
Robert W. Barnes
Keyword(s):  
Real Time ◽  
Spectrum Analysis ◽  
Doppler Spectrum

scholarly journals Detection of Moving Targets Based on Doppler Spectrum Analysis Technique for Passive Coherent Radar

2013 ◽  
Vol 2 (2) ◽  
pp. 247-256
Author(s):  
Yao-dong Zhao ◽  
Xiao-de Lü ◽  
Ji-chuan Li ◽  
Mao-sheng Xiang
Keyword(s):  
Spectrum Analysis ◽  
Doppler Spectrum ◽  
Moving Targets ◽  
Analysis Technique ◽  
Coherent Radar

Doppler spectrum analysis versus direct femoral artery pressure measurement for rapid assessment of aortoiliac obstruction.

1997 ◽  
Vol 16 (8) ◽  
pp. 525-528 ◽  
Author(s):  
J A van der Vliet ◽  
W N van Asten ◽  
J H Haenen ◽  
A P Boll ◽  
F G Buskens
Keyword(s):  
Femoral Artery ◽  
Spectrum Analysis ◽  
Pressure Measurement ◽  
Rapid Assessment ◽  
Doppler Spectrum ◽  
Artery Pressure

Evaluation of renal allograft function by Doppler spectrum analysis

1989 ◽  
Vol 2 (1) ◽  
pp. 16-22 ◽  
Author(s):  
S. H. Skotnicki ◽  
W. N. J. C. Asten ◽  
W. J. Beijneveld ◽  
R. Roosmalen ◽  
A. J. Hoitsma ◽  
...  
Keyword(s):  
Spectrum Analysis ◽  
Renal Allograft ◽  
Doppler Spectrum ◽  
Allograft Function
Sign in / Sign up

Export Citation Format

Share Document