Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Evaluation of fetal regional cerebral blood perfusion using power Doppler ultrasound and the estimation of fractional moving blood volume

Författare:
  • E. Hernandez-Andrade
  • Tomas Jansson
  • H. Figueroa-Diesel
  • H. Rangel-Nava
  • R. Acosta-Rojas
  • E. Gratacos
Publiceringsår: 2007
Språk: Engelska
Sidor: 556-561
Publikation/Tidskrift/Serie: Ultrasound in Obstetrics and Gynecology
Volym: 29
Nummer: 5
Dokumenttyp: Artikel
Förlag: John Wiley & Sons, Ltd

Sammanfattning

Objective To standardize the evaluation of regional fetal brain blood perfusion, using power Doppler ultrasound (PDU) to estimate the fractional moving blood volume (FMBV) and to evaluate the reproducibility of this estimation. Methods Brain blood perfusion was evaluated in 35 normally grown fetuses at 28-30 weeks of gestation, using PDU. The following cerebral regions were included in the PDU color box: anterior sagittal, complete sagittal, basal ganglia, and cerebellar. Ten consecutive good-quality images of each anatomical plane were recorded and the delimitation of the region of interest (ROI) was performed off-line. FMBV was quantified in the ROI of all images and the mean considered as the final value. Differences between regions, variability, reproducibility and agreement between observers were assessed. Results Power Doppler images of the described anatomical planes were obtained in all cases, regardless of fetal position. The median time for the acquisition of the images was 7 (range 4-12) min. Mean (range) FMBV values were: anterior sagittal, 16.5 (10.7-22.8)%, inter-patient coefficient of variation (CV) 0.22; complete sagittal, 13.5 (8.8-.16.1)%, CV 0.27; basal ganglia, 18.3 (10.7-27.6) %, CV 0.27; and cerebellar, 6.6 (3.0-11.0) %, CV 0.38. There were statistically significant differences in FMBV between cerebellar and complete sagittal ROIs with the frontal and basal ganglia regions. Reproducibility analyses showed an intraclass correlation coefficient of 0.91 (95% CI 0.67-0.97) and an interclass correlation coefficient of 0.87 (95% CI 0.70-0.94). Interobserver agreement showed a mean difference between observers of -0.2 (SD 2.7) with 95% limits of agreement -5.6 to 5.2. Conclusions When the regions of interest are well defined, the FMBV estimate offers a method to quantify blood flow perfusion in different fetal cerebral areas. There appear to be regional differences in FMBV within the fetal brain. Copyright (c) 2007 ISUOG. Published by John Wiley & Sons, Ltd.

Disputation

Nyckelord

  • Medicine and Health Sciences
  • Doppler
  • power
  • fractional moving blood volume
  • blood perfusion
  • fetal brain
  • reproducibility
  • standardization

Övriga

Published
Yes
  • ISSN: 0960-7692

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen