Decreased CSF-flow Artefacts in T2 Imaging of the Cervical Spine with Periodically Rotated Overlapping Parallel Lines with Enhanced Reconstruction (PROPELLER/BLADE)

Overview

Journal Neuroradiology

Specialties Neurology
Radiology

Date 2010 Apr 14

PMID 20386890

Citations 2

Authors

Andreas Ragoschke-Schumm

Peter Schmidt

Julia Schumm

Georg Reimann

Hans-Joachim Mentzel

Werner A Kaiser

Thomas E Mayer

Affiliations

Soon will be listed here.

Abstract

Introduction: The cervical spine is prone to artefacts in T2 MR-imaging due to patient movements and cerebrospinal fluid flow. The periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER/BLADE) acquisition method was developed to reduce motion artefacts. We sought to determine if T2-BLADE is superior to T2-TSE with conventional k-space reading.

Methods: Twenty-five patients were examined using a 1.5 T MR-scanner. T2-weighted imaging of the cervical spine in sagittal and axial orientation using conventional or BLADE k-space reading was performed. Spinal cord, subarachnoid space, vertebrae and discs were evaluated by two independent observers using a scale from 0 (non-diagnostic) to 3 (excellent). Interobserver correlation was assessed as Cohen's kappa. Results of Mann-Whitney U test with p < 0.05 were regarded as significant. Furthermore, the investigators were asked for subjective evaluation in consensus.

Results: Overall interobserver accuracy of κ = 0.91 was obtained. Comparison of sagittal images showed better values for all investigated structures in T2-BLADE: spinal cord (TSE/BLADE: 1.52/2.04; p < 0.001), subarachnoid space (1.36/2.06; p < 0.001) and vertebrae/discs (1.66/2.86; p < 0.001). Comparison of axial images showed better values in T2-BLADE for spinal cord (1.68/1.86; p = 0.149) and vertebrae/discs (1.0/1.96: p < 0.001) while subarachnoid space was better to be evaluated in conventional T2-TSE (1.94/1.12; p < 0.001). In sagittal orientation, motion- and CSF-flow artefacts were reduced in T2-BLADE. In axial orientation, however, CSF-flow artefacts were pronounced in T2-BLADE.

Conclusion: The image quality of the sagittal T2-BLADE sequences was significantly better than the T2-TSE and acquired in less time. In axial orientation, increased CSF-flow artefacts may reduce accuracy of structures in the subarachnoid space.

Citing Articles

Magnetic Resonance Imaging in Cervical Spine Trauma: More Than Soft Tissue Illustration.

Fotakopoulos G, Brotis A, Fountas K Cureus. 2022; 14(1):e21493.

PMID: 35223270 PMC: 8860237. DOI: 10.7759/cureus.21493.

Elimination of motion and pulsation artifacts using BLADE sequences in shoulder MR imaging.

Lavdas E, Vlychou M, Zaloni E, Vassiou K, Tsagkalis A, Dailiana Z Skeletal Radiol. 2015; 44(11):1619-26.

PMID: 26306388 DOI: 10.1007/s00256-015-2232-3.

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