OP23.05: Influence of pulse repetition frequency adjustment on three-dimensional power Doppler indices and STIC volumetric pulsatility index using an in vivo model

2014 ◽  
Vol 44 (S1) ◽  
pp. 118-118
Author(s):  
A.H. Miyague ◽  
T.Z. Pavan ◽  
C.A. Soares ◽  
L. De Catte ◽  
C.O. Nastri ◽  
...  
Keyword(s):  
Pulsatility Index ◽  
Pulse Repetition Frequency ◽  
Power Doppler ◽  
Three Dimensional ◽  
Repetition Frequency ◽  
Pulse Repetition ◽  
In Vivo Model ◽  
Frequency Adjustment ◽  
Doppler Indices

Importance of Pulse Repetition Frequency Adjustment for 3- and 4-Dimensional Power Doppler Quantification

2015 ◽  
Vol 34 (12) ◽  
pp. 2245-2251 ◽  
Author(s):  
Andre H. Miyague ◽  
Theo Z. Pavan ◽  
Carlos A. Soares ◽  
Luc De Catte ◽  
Carolina O. Nastri ◽  
...  
Keyword(s):  
Pulse Repetition Frequency ◽  
Power Doppler ◽  
Repetition Frequency ◽  
Pulse Repetition ◽  
Frequency Adjustment

scholarly journals Three-Dimensional Power Doppler Analysis of Cerebral Circulation in Normal and Growth-Restricted Fetuses

2009 ◽  
Vol 29 (9) ◽  
pp. 1609-1618 ◽  
Author(s):  
Jose L Bartha ◽  
Eva M Moya ◽  
Blas Hervías-Vivancos
Keyword(s):  
Doppler Ultrasound ◽  
Cerebral Circulation ◽  
Pulsatility Index ◽  
Power Doppler ◽  
Three Dimensional ◽  
Flow Index ◽  
Power Doppler Ultrasound ◽  
3D Power Doppler ◽  
Doppler Indices ◽  
Vascularization Index

The objective of the present study was to evaluate fetal cerebral circulation by using three-dimensional (3D) power Doppler ultrasound in normal and growth-restricted fetuses. A total of 100 normal grown fetuses were compared with other 25 with growth restriction (FGR). Three-dimensional power Doppler ultrasound was used to assess fetal cerebral 3D vascular indices: vascularization index, flow index (FI), and vascularization flow index (VFI). Both FI and VFI correlated positively with gestational age. On average, all the 3D vascular indices were increased in fetuses with FGR. The proportion of fetuses detected as having hemodynamic redistribution was higher when using 3D power Doppler indices than by means of the middle cerebral artery pulsatility index (52% versus 20%, P = 0.002). In conclusion, two of the three indices increased during gestation. All the fetal cerebral 3D vascular indices are increased in fetuses with FGR. In these fetuses, there were more cases suggesting hemodynamic redistribution than expected by conventional Doppler studies.

Understanding the Influence of Flow Velocity, Wall Motion Filter, Pulse Repetition Frequency, and Aliasing on Power Doppler Image Quantification

2017 ◽  
Vol 37 (1) ◽  
pp. 255-261 ◽  
Author(s):  
Maricy R. Martins ◽  
Wellington P. Martins ◽  
Carlos A. M. Soares ◽  
Andre H. Miyague ◽  
Marek J. Kudla ◽  
...  
Keyword(s):  
Flow Velocity ◽  
Wall Motion ◽  
Pulse Repetition Frequency ◽  
Power Doppler ◽  
Repetition Frequency ◽  
Pulse Repetition ◽  
Image Quantification ◽  
Doppler Image

Use of pulse repetition frequency to augment acoustic droplet vaporization in vivo

2016 ◽  
Vol 140 (4) ◽  
pp. 3026-3026 ◽  
Author(s):  
Robinson Seda ◽  
Jonah Harmon ◽  
Jeffrey B. Fowlkes ◽  
Joseph Bull
Keyword(s):  
Pulse Repetition Frequency ◽  
Repetition Frequency ◽  
Pulse Repetition ◽  
Acoustic Droplet Vaporization ◽  
Droplet Vaporization

Influence of Pulse Repetition Frequency on 3-D Power Doppler Quantification

2016 ◽  
Vol 42 (12) ◽  
pp. 2887-2892 ◽  
Author(s):  
Carlos A.M. Soares ◽  
Theo Z. Pavan ◽  
Andre H. Miyague ◽  
Marek Kudla ◽  
Wellington P. Martins
Keyword(s):  
Pulse Repetition Frequency ◽  
Power Doppler ◽  
Repetition Frequency ◽  
Pulse Repetition

scholarly journals OP15.06: Influence of attenuation upon three-dimensional power Doppler indices and STIC volumetric pulsatility index: a flow-phantom experiment

2013 ◽  
Vol 42 (s1) ◽  
pp. 90-90
Author(s):  
A. H. Miyague ◽  
T. Z. Pavan ◽  
F. W. Grillo ◽  
D. M. Teixeira ◽  
C. O. Nastri ◽  
...  
Keyword(s):  
Pulsatility Index ◽  
Power Doppler ◽  
Three Dimensional ◽  
Phantom Experiment ◽  
Flow Phantom ◽  
Doppler Indices

scholarly journals Influence of attenuation on three-dimensional power Doppler indices and STIC volumetric pulsatility index: a flow phantom experiment

2013 ◽  
Vol 43 (1) ◽  
pp. 103-105 ◽  
Author(s):  
A. H. Miyague ◽  
T. Z. Pavan ◽  
F. W. Grillo ◽  
D. M. Teixeira ◽  
C. O. Nastri ◽  
...  
Keyword(s):  
Pulsatility Index ◽  
Power Doppler ◽  
Three Dimensional ◽  
Phantom Experiment ◽  
Flow Phantom ◽  
Doppler Indices
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