| Literature DB >> 27189488 |
Jaladhar Neelavalli1,2, Uday Krishnamurthy3,4, Pavan K Jella3, Swati S Mody3,5, Brijesh K Yadav3,4, Kelly Hendershot3, Edgar Hernandez-Andrade6,7, Lami Yeo6,7, Maria D Cabrera3, Ewart M Haacke3,4, Sonia S Hassan6,7, Roberto Romero7,8,9,10.
Abstract
Magnetic resonance angiography has not been used much previously for visualizing fetal vessels in utero for reasons that include a contraindication for the use of exogenous contrast agents, maternal respiratory motion and fetal motion. In this work, we report the feasibility of using an appropriately modified clinical time-of-flight magnetic resonance imaging sequence for non-contrast angiography of human fetal and placental vessels at 3.0 T. Using this 2D angiography technique, it is possible to visualize fetal vascular networks in late pregnancy. KEY POINTS: • 3D-visualization of fetal vasculature is feasible using non-contrast MRA at 3.0 T. • Visualization of placental vasculature is also possible with this method. • Fetal MRA can serve as a vascular localizer for quantitative MRI studies. • This method can be extended to 1.5 T.Entities:
Keywords: Fetal circulation; Non-contrast magnetic resonance angiography; Placental vasculature; Pseudo-triggering; Time of flight vascular imaging
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Year: 2016 PMID： 27189488 PMCID： PMC5102784 DOI： 10.1007/s00330-016-4243-4
Source DB: PubMed Journal: Eur Radiol ISSN： 0938-7994 Impact factor: 5.315