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Are there any differences in three dimensional placental vascular indices obtainedd using conventional power Doppler and high definition flow imaging?
MedLine Citation:
PMID:  22272917     Owner:  NLM     Status:  Publisher    
Abstract Objective: The purpose of this study was to determine whether there are differences in values and reproducibility of three-dimensional(3D) vascular indices obtained on placental volumes using power Doppler(PD) or high-definition flow imaging(HDFI) techniques. Methods: A prospective study was performed on 121 uncomplicated singleton pregnancies at 11+0 to 13+6 weeks of gestation. Two placental volumes were acquired from each pregnancy. Vascularization Index(VI), Flow index(FI) and Vascularization Flow Index(VFI) were then analyzed and compared. In order to assess the reproducibility of the measurements 2 additional placental volumes obtained with both PD and HDFI were acquired in 31 pregnancies and the agreement assessed by intraclass correlation coefficients(ICC). Inter-observer variability was assessed by analysing all the volumes by two observers blinded to each other's. Results: There was a significant relationship between the vascular indices values obtained with the two techniques (VI Pearson's r=0.891 p<0.001; FI r=0.769 p<0.001; VFIr=0.847 p<0.001). The median values of VI, FI and VFI were significantly higher when obtained with HDFI imaging. In serial recordings the ICCs resulted higher when volumes were acquired with HDFI rather than with PD techniques. Similarly HDFI demonstrated an higher inter-observer reproducibility. Conclusions: 3D vascular indices calculated using HDFI are higher than those calculated using conventional PD. Although the relationship between the two methods is high, HDFI shows a better reproducibility suggesting its potential clinical application.
Giuseppe Rizzo; Maria Elena Pietrolucci; Eloisa Aiello; Estelle Dijmeli; Costanza Bosi; Domenico Arduini
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-1-24
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  -     ISSN:  1476-4954     ISO Abbreviation:  -     Publication Date:  2012 Jan 
Date Detail:
Created Date:  2012-1-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Fetal Medicine Center Genoma.
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