Document Detail

Placental vascular sonobiopsy using three-dimensional power Doppler ultrasound in normal and growth restricted fetuses.
MedLine Citation:
PMID:  19327824     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To investigate placental vascular sonobiopsy using three-dimensional (3D) power Doppler ultrasound to assess placental vascularization in normal and growth restricted fetuses. METHODS: Placental vascular sonobiopsy using 3D power Doppler ultrasound with the VOCAL imaging analysis program was performed on 208 normal fetuses between 12 and 40 weeks of gestation and 13 pregnancies with fetal growth restriction (FGR) at 22-39 weeks' gestation. Only pregnancies with an entirely visualized anterior placenta were included in the study. 3D power Doppler indices related to placental vascularization (vascularization index (VI), flow index (FI) and vascularization flow index (VFI)) were calculated in each placenta. Intra- and inter-class correlation coefficients and intra- and inter-observer agreements of measurements were assessed. RESULTS: A weak linear relationship was found between the gestational age and VI, FI, and VFI, respectively. VI values in 8 of 13 FGR pregnancies (61.5%), FI value in one FGR pregnancy (7.7%) and VFI values of 6 FGR pregnancies (46.2%) were below -1.5SD of the reference ranges for VI, FI and VFI, respectively. After 32 weeks of gestation, VI, FI, and VFI values in 10 FGR pregnancies were significantly lower compared to 79 normal pregnancies, respectively (P < 0.01). All 3D power Doppler indices (VI, FI and VFI) showed a correlation greater than 0.85, with good intra- and inter-observer agreements. CONCLUSION: Our findings suggest that placental vascular sonobiopsy using 3D power Doppler ultrasound may provide new information on the assessment of placental vascularization in normal and FGR pregnancies, while placental perfusion is reduced in FGR compared to normal pregnancy. However, the data and its interpretation in our study should be taken with some degree of caution because of the small number of FGR subjects studied. Further studies involving a larger sample size of FGR pregnancies are needed to confirm the usefulness of placental vascular sonobiopsy using 3D power Doppler ultrasound in clinical practice.
J Noguchi; K Hata; H Tanaka; T Hata
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Publication Detail:
Type:  Journal Article     Date:  2009-03-26
Journal Detail:
Title:  Placenta     Volume:  30     ISSN:  1532-3102     ISO Abbreviation:  Placenta     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-28     Completed Date:  2009-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8006349     Medline TA:  Placenta     Country:  England    
Other Details:
Languages:  eng     Pagination:  391-7     Citation Subset:  IM    
Department of Perinatology and Gynecology, Kagawa University School of Medicine, Miki, Kagawa, Japan.
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MeSH Terms
Cross-Sectional Studies
Fetal Growth Retardation / ultrasonography*
Gestational Age
Imaging, Three-Dimensional / methods
Laser-Doppler Flowmetry / methods
Observer Variation
Placenta / blood supply*,  ultrasonography*
Ultrasonography, Prenatal / methods

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