Pediatric Radiology

, Volume 39, Issue 10, pp 1038–1047 | Cite as

Performance of PROPELLER relative to standard FSE T2-weighted imaging in pediatric brain MRI

  • A. Talia Vertinsky
  • Erika Rubesova
  • Michael V. Krasnokutsky
  • Sabine Bammer
  • Jarrett Rosenberg
  • Allan White
  • Patrick D. Barnes
  • Roland Bammer
Original Article

Abstract

Background

T2-weighted fast spin-echo imaging (T2-W FSE) is frequently degraded by motion in pediatric patients. MR imaging with periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) employs alternate sampling of k-space to achieve motion reduction.

Objective

To compare T2-W PROPELLER FSE (T2-W PROP) with conventional T2-W FSE for: (1) image quality; (2) presence of artefacts; and (3) ability to detect lesions.

Materials and methods

Ninety-five pediatric patients undergoing brain MRI (1.5 T) were evaluated with T2-W FSE and T2-W PROP. Three independent radiologists rated T2-W FSE and T2-W PROP, assessing image quality, presence of artefacts, and diagnostic confidence. Chi-square analysis and Wilcoxon signed rank test were used to assess the radiologists’ responses.

Results

Compared with T2-W FSE, T2-W PROP demonstrated better image quality and reduced motion artefacts, with the greatest benefit in children younger than 6 months. Although detection rates were comparable for the two sequences, blood products were more conspicuous on T2-W FSE. Diagnostic confidence was higher using T2-W PROP in children younger than 6 months. Average inter-rater agreement was 87%.

Conclusion

T2-W PROP showed reduced motion artefacts and improved diagnostic confidence in children younger than 6 months. Thus, use of T2-W PROP rather than T2-W FSE should be considered in routine imaging of this age group, with caution required in identifying blood products.

Keywords

MRI Brain Motion reduction PROPELLER Children 

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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • A. Talia Vertinsky
    • 1
    • 2
  • Erika Rubesova
    • 3
  • Michael V. Krasnokutsky
    • 4
    • 5
  • Sabine Bammer
    • 3
  • Jarrett Rosenberg
    • 6
  • Allan White
    • 3
  • Patrick D. Barnes
    • 3
  • Roland Bammer
    • 6
  1. 1.Department of RadiologyVancouver General HospitalVancouverCanada
  2. 2.Department of RadiologyUniversity of British ColumbiaVancouverCanada
  3. 3.Lucile Salter Packard Children’s HospitalStanford University Medical CenterPalo AltoUSA
  4. 4.Department of RadiologyMadigan Army Medical CenterTacomaUSA
  5. 5.Department of RadiologyUniformed Services University of Health SciencesBethesdaUSA
  6. 6.Department of RadiologyLucas Center, Stanford UniversityPalo AltoUSA

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