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September 3, 2010Ultrasound in Obstetrics and Gynecology

Temporal and spatial performance of vector velocity imaging in the human fetal heart

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Why the study?

Does high-frame-rate storing improve the spatial and temporal performance of fetal myocardial speckle tracking compared to low-frame-rate storing in normal fetuses?

Population

124 normal fetuses

Comparison

High-frame-rate storing and Lagrangian strain… vs Low-frame-rate video storing at 25 Hz

Design

Cross-sectional

Authors

HMHikoro MatsuiUniversity of Tokyo HospitalIGIoannis GermanakisPediatric CardiologyEKElena KulinskayaLondon School of Hygiene & Tropical Medicine

Discussion

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Implication

HFR may boost fetal speckle-tracking feasibility; hypothesis-generating and should not yet alter practice versus Doppler.

Structured PICO

Does high-frame-rate storing improve the spatial and temporal performance of fetal myocardial speckle tracking compared to low-frame-rate storing in normal fetuses?

P
Population
124 normal fetuses
I
Intervention
High-frame-rate (HFR) storing (average 79.4 Hz) and Lagrangian strain analysis using vector velocity imaging (VVI)
C
Comparator
Low-frame-rate (LFR) video storing at 25 Hz (in 93 fetuses)
O
Outcome
Tracking success, Lagrangian strain, peak diastolic velocity and positive strain rate valuessurrogate

High-frame-rate storing improves tracking success in fetal myocardial speckle tracking compared to low-frame-rate storing, though Doppler remains superior for velocity estimation.

Cite This Study

Matsui et al. (2010) studied this question.

synapsesocial.com/papers/6a702c2f26a7f98052dcae90https://doi.org/10.1002/uog.8815
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Also Consider

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  1. 1A Comparison of Regional Myocardial Velocity Information Derived by Pulsed and Color Doppler Techniques: An In Vitro and In Vivo Study2000 · 85 citations
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  3. 3Epicardial strains in embryonic chick ventricle at stages 16 through 24.1994 · 41 citations
  4. 4New Noninvasive Method for Assessment of Left Ventricular Rotation2005 · 707 citations
  5. 5Mechanics of the Single Left Ventricle1998 · 104 citations