Reduction of motion, truncation and flow artifacts using BLADE sequences in cervical spine MR imaging

Eleftherios Lavdas, Panayiotis Mavroidis, Spiros Kostopoulos, Constantin Ninos, Aspasia Dimitra Strikou, Dimitrios Glotsos, Anna Vlachopoulou, Georgia Oikonomou, Nikolaos Economopoulos, Violeta Roka, Georgios K. Sakkas, Antonios Tsagkalis, Sotirios Stathakis, Nikos Papanikolaou, Georgios Batsikas

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Purpose: To assess the efficacy of the BLADE technique (MR imaging with 'rotating blade-like k-space covering') to significantly reduce motion, truncation, flow and other artifacts in cervical spine compared to the conventional technique. Materials and methods: In eighty consecutive subjects, who had been routinely scanned for cervical spine examination, the following pairs of sequences were compared: a) T2 TSE SAG vs. T2 TSE SAG BLADE and b) T2 TIRM SAG vs. T2 TIRM SAG BLADE. A quantitative analysis was performed using the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) measures. A qualitative analysis was also performed by two radiologists, who graded seven image characteristics on a 5-point scale (0: non-visualization; 1: poor; 2: average; 3: good; 4: excellent). The observers also evaluated the presence of image artifacts (motion, truncation, flow, indentation). Results: In quantitative analysis, the CNR values of the CSF/SC between TIRM SAG and TIRM SAG BLADE were found to present statistically significant differences (p. <. 0.001). Regarding motion and truncation artifacts, the T2 TSE BLADE SAG was superior compared to the T2 TSE SAG, and the T2 TIRM BLADE SAG was superior compared to the T2 TIRM SAG. Regarding flow artifacts, T2 TIRM BLADE SAG eliminated more artifacts than T2 TIRM SAG. Conclusions: In cervical spine MRI, BLADE sequences appear to significantly reduce motion, truncation and flow artifacts and improve image quality. BLADE sequences are proposed to be used for uncooperative subjects. Nevertheless, more research needs to be done by testing additional specific pathologies.

Original languageEnglish (US)
Pages (from-to)194-200
Number of pages7
JournalMagnetic Resonance Imaging
Volume33
Issue number2
DOIs
StatePublished - Feb 1 2015

Keywords

  • Artifact reduction
  • BLADE sequences
  • Cervical spine MR imaging
  • Image quality

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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