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Eur J Radiol. 2014 Jun;83(6):905-8. doi: 10.1016/j.ejrad.2014.03.013. Epub 2014 Mar 22.

Value of non-contrast sequences in magnetic resonance angiography of hepatic arterial vasculature.

Author information

  • 1Department of Diagnostic Radiology, Yale School of Medicine, Box 208042, Tompkins East 2, 333 Cedar Street, New Haven, CT 06520-8042, United States of America. Electronic address: vivek.kalra@yale.edu.
  • 2Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Francis Street, Boston, MA 02115, United States of America. Electronic address: jwgilbert@partners.org.
  • 3Department of Radiology, Columbia University Medical Center, Milstein 3rd Fl, New York NY 10032 United States. Electronic address: sk3552@columbia.edu.
  • 4Department of Diagnostic Radiology, Yale School of Medicine, Box 208042, Tompkins East 2, 333 Cedar St, New Haven, CT 06520-8042, United States of America. Electronic address: daniel.cornfeld@yale.edu.

Abstract

OBJECTIVE:

To evaluate value of adding non-contrast MR angiographic sequence (In-Flow Inversion Recovery [IFIR]) to standard fat-suppressed T1-weighted postcontrast sequence (3D spoiled gradient echo [3D-GRE]) for evaluating hepatic arterial anatomy.

METHODS:

Retrospective evaluation of 30 consecutive patients undergoing multiphase liver MRI. Individual vessels for IFIR/3D-GRE sequences were evaluated by two blinded readers using a four-point scale. Statistical analysis was performed using the Wilcoxon signed-rank test for vessel conspicuity between IFIR/3D-GRE sequences.

RESULTS:

IFIR alone diagnostically imaged 8.1% of vessels, 3D-GRE alone 25.8%, 55.8% by both 3D-GRE/IFIR, and 10.3% of vessels by neither. Two patients with variant vascular anatomy were visualized with both sequences. Addition of IFIR to 3D-GRE resulted in statistically significant increase in arterial visualization (p<0.001), 10% relative increase in identified vessels, and 3-5 mi increase in acquisition time for total scan time of 30-35 min.

CONCLUSIONS:

IFIR may be a useful adjunct to 3D-GRE in hepatic angiography without adding considerably to scan time. 10% more hepatic arteries were seen when combining information from IFIR/3D-GRE vs. 3D-GRE alone.

Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

KEYWORDS:

Hepatic MR angiography; Hepatic angiography; IFIR

PMID:
24703521
[PubMed - indexed for MEDLINE]
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