Erschienen in:
01.02.2011 | Letter to the Editor
Reproducibility of 3D power Doppler placental vascular indices
verfasst von:
Wellington P. Martins, Carolina O. Nastri
Erschienen in:
Archives of Gynecology and Obstetrics
|
Ausgabe 2/2011
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Excerpt
We read with great interest the article by Guimaraes Filho et al. [
1], evaluating the intra and inter observer reproducibility of 3D power Doppler. Based on their results, the authors concluded that “3D PD placental vascular indices obtained using the automatic sphere mode had a good intra and inter observer reproducibility for pregnancies between 26 and 35 weeks”. However, in another recent work evaluating the same issue by Lai et al. [
2], the conclusions were totally different: “There is insufficient evidence to support the meaning, reliability or reproducibility of VOCAL (VI, FI or VFI) as a tool to quantify placental perfusion despite its use in multiple publications and journal submissions. Poor reproducibility is present at the most fundamental level. Further investigation into reproducibility of placental perfusion and quantification using VOCAL is required before development and application as a clinically useful tool”. Reading more carefully the papers, we observed some methodological issues in both of them that should be considered. …