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Brain magnetic resonance imaging at 3 Tesla using BLADE compared with standard rectilinear data sampling.
Invest Radiol. 2006 Jul; 41(7):586-92.IR

Abstract

OBJECTIVES

We sought to evaluate Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER; BLADE) data acquisition in comparison with standard k-space sampling techniques for axial and sagittal brain imaging at 3 T regarding imaging artifacts.

MATERIAL AND METHODS

Forty patients who gave consent were included in a prospective comparison of standard and PROPELLER (BLADE) k-space sampling techniques. All examinations were performed at 3 T with comparison of standard T2-weighted fluid-attenuated inversion recovery (FLAIR) to PROPELLER T2-weighted FLAIR in the axial image orientation and standard T1-weighted gradient echo to PROPELLER T1-weighted FLAIR in the sagittal image orientation. Imaging protocols were matched for spatial resolution, with data evaluation performed by 2 experienced neuroradiologists. Image data were compared regarding various image artifacts and overall image quality. Reader agreement was assessed by Cohen's kappa statistics.

RESULTS

PROPELLER T2-weighted axial data acquisition showed significantly less pulsation and Gibb's artifacts than the standard T2-weighted scan. Even without motion correction, the frequency of ghosting (motion) artifacts was substantially lower in the PROPELLER T2-weighted data and readers concordantly (kappa = 1) rated PROPELLER as better than or equal to the standard T2-weighted scan in the majority of cases (95%; P < 0.0001). In the comparison of sagittal T1-weighted data sets, readers showed only fair agreement (kappa = 0.24) and noted consistent wrap artifacts in PROPELLER T1-weighted FLAIR.

CONCLUSION

PROPELLER (BLADE) brain magnetic resonance imaging is also applicable at 3 T. In addition to minimizing motion artifacts, the PROPELLER acquisition scheme reduces other magnetic resonance artifacts that would otherwise degrade scan quality.

Authors+Show Affiliations

Department of Clinical Radiology, University Hospitals-Grosshadern, Ludwig-Maximilians-University, Munich, Germany. Bernd.Wintersperger@med.uni-muenchen.deNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

16772852

Citation

Wintersperger, Bernd J., et al. "Brain Magnetic Resonance Imaging at 3 Tesla Using BLADE Compared With Standard Rectilinear Data Sampling." Investigative Radiology, vol. 41, no. 7, 2006, pp. 586-92.
Wintersperger BJ, Runge VM, Biswas J, et al. Brain magnetic resonance imaging at 3 Tesla using BLADE compared with standard rectilinear data sampling. Invest Radiol. 2006;41(7):586-92.
Wintersperger, B. J., Runge, V. M., Biswas, J., Nelson, C. B., Stemmer, A., Simonetta, A. B., Reiser, M. F., Naul, L. G., & Schoenberg, S. O. (2006). Brain magnetic resonance imaging at 3 Tesla using BLADE compared with standard rectilinear data sampling. Investigative Radiology, 41(7), 586-92.
Wintersperger BJ, et al. Brain Magnetic Resonance Imaging at 3 Tesla Using BLADE Compared With Standard Rectilinear Data Sampling. Invest Radiol. 2006;41(7):586-92. PubMed PMID: 16772852.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Brain magnetic resonance imaging at 3 Tesla using BLADE compared with standard rectilinear data sampling. AU - Wintersperger,Bernd J, AU - Runge,Val M, AU - Biswas,Jonmenjoy, AU - Nelson,C Brett, AU - Stemmer,Alto, AU - Simonetta,Alexander B, AU - Reiser,Maximilian F, AU - Naul,L G, AU - Schoenberg,Stefan O, PY - 2006/6/15/pubmed PY - 2006/12/9/medline PY - 2006/6/15/entrez SP - 586 EP - 92 JF - Investigative radiology JO - Invest Radiol VL - 41 IS - 7 N2 - OBJECTIVES: We sought to evaluate Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER; BLADE) data acquisition in comparison with standard k-space sampling techniques for axial and sagittal brain imaging at 3 T regarding imaging artifacts. MATERIAL AND METHODS: Forty patients who gave consent were included in a prospective comparison of standard and PROPELLER (BLADE) k-space sampling techniques. All examinations were performed at 3 T with comparison of standard T2-weighted fluid-attenuated inversion recovery (FLAIR) to PROPELLER T2-weighted FLAIR in the axial image orientation and standard T1-weighted gradient echo to PROPELLER T1-weighted FLAIR in the sagittal image orientation. Imaging protocols were matched for spatial resolution, with data evaluation performed by 2 experienced neuroradiologists. Image data were compared regarding various image artifacts and overall image quality. Reader agreement was assessed by Cohen's kappa statistics. RESULTS: PROPELLER T2-weighted axial data acquisition showed significantly less pulsation and Gibb's artifacts than the standard T2-weighted scan. Even without motion correction, the frequency of ghosting (motion) artifacts was substantially lower in the PROPELLER T2-weighted data and readers concordantly (kappa = 1) rated PROPELLER as better than or equal to the standard T2-weighted scan in the majority of cases (95%; P < 0.0001). In the comparison of sagittal T1-weighted data sets, readers showed only fair agreement (kappa = 0.24) and noted consistent wrap artifacts in PROPELLER T1-weighted FLAIR. CONCLUSION: PROPELLER (BLADE) brain magnetic resonance imaging is also applicable at 3 T. In addition to minimizing motion artifacts, the PROPELLER acquisition scheme reduces other magnetic resonance artifacts that would otherwise degrade scan quality. SN - 0020-9996 UR - https://www.unboundmedicine.com/medline/citation/16772852/Brain_magnetic_resonance_imaging_at_3_Tesla_using_BLADE_compared_with_standard_rectilinear_data_sampling_ L2 - https://doi.org/10.1097/01.rli.0000223742.35655.24 DB - PRIME DP - Unbound Medicine ER -