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01-08-2019 | Magnetic Resonance Imaging | Original Article

Respiratory motion in children and young adults undergoing liver magnetic resonance imaging with intravenous gadoxetate disodium contrast material

Authors: Leah A. Gilligan, Andrew T. Trout, Christopher G. Anton, Andrew H. Schapiro, Alexander J. Towbin, Jonathan R. Dillman

Published in: Pediatric Radiology | Issue 9/2019

Abstract

Background

Gadoxetate disodium, utilized in hepatobiliary magnetic resonance (MR) imaging, has been associated with transient respiratory motion during the arterial phase in adults.

Objective

The purpose of this study was to determine the presence and severity of this phenomenon in children imaged awake versus under general anesthesia.

Materials and methods

This retrospective cohort study was approved by the institutional review board; informed consent was waived. One hundred thirty exams of children ≤18 years old who underwent dynamic liver MR imaging with gadoxetate disodium between October 2010 and January 2018 were reviewed. Three pediatric radiologists scored respiratory motion artifacts on all imaging phases using a 5-point Likert scale. Differences in mean motion scores were assessed with analysis of variance and Tukey’s multiple comparisons test, and multivariable regression was used to identify predictors of arterial phase motion in awake patients.

Results

One hundred thirty patients (50% [n=65] female; mean age: 9.8±3.7 years, 48.5% [n=63] awake) were included. There were significant differences in mean motion scores between phases in the awake cohort (P<0.0001) but not in the general anesthesia cohort (P=0.051). In the awake cohort, arterial phase motion score (mean: 3.52±0.83) was significantly higher than mean motion score in all other phases (P≤0.0003). There were no significant patient-specific predictors of arterial phase motion score in the awake cohort.

Conclusion

Significantly increased arterial phase respiratory motion artifact in awake children undergoing dynamic liver MR imaging with gadoxetate disodium suggests that transient respiratory motion occurs in children. General anesthesia may suppress this phenomenon.

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Title: Respiratory motion in children and young adults undergoing liver magnetic resonance imaging with intravenous gadoxetate disodium contrast material
Authors: Leah A. Gilligan
Andrew T. Trout
Christopher G. Anton
Andrew H. Schapiro
Alexander J. Towbin
Jonathan R. Dillman
Publication date: 01-08-2019
Publisher: Springer Berlin Heidelberg
Keywords: Magnetic Resonance Imaging
Magnetic Resonance Imaging
Dyspnea
Dyspnea
General Anesthesia
Published in: Pediatric Radiology / Issue 9/2019
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-019-04437-x

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Respiratory motion in children and young adults undergoing liver magnetic resonance imaging with intravenous gadoxetate disodium contrast material

Abstract

Background

Objective

Materials and methods

Results

Conclusion

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