Brain and spine MRI artifacts at 3Tesla

Vargas, Maria Isabel; Delavelle, J.; Köhler, R; Becker, Christoph; Lövblad, Karl‐Olof

doi:10.1016/j.neurad.2008.08.001

Cited by 56 publications

(29 citation statements)

References 13 publications

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“…Imaging of the cervical spine is of higher quality at 3T; however, artifacts remain at the thoracic level. 25 In clinical routine, an adaptation of the FOV and resolution of MR images in children by age is recommended.…”

Section: Imagingmentioning

confidence: 99%

Spinal Cord Ischemia: Practical Imaging Tips, Pearls, and Pitfalls

Vargas¹,

Gariani²,

Sztajzel

et al. 2014

AJNR Am J Neuroradiol

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149

121

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SUMMARY:Ischemia of the spinal cord is a rare entity with a poor prognosis. Brain ischemia is no longer a diagnostic challenge; on the contrary, ischemia of the spinal cord remains difficult, particularly in children. In this article, we illustrate the principal causes in children and adults, clinical presentation, different techniques for the diagnosis by MR imaging (diffusion, spinal MR angiography, and 1.5 versus 3T), pathophysiology, and differential diagnosis. We will discuss current knowledge, perspectives, and pitfalls.

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Section: Imagingmentioning

confidence: 99%

Spinal Cord Ischemia: Practical Imaging Tips, Pearls, and Pitfalls

Vargas¹,

Gariani²,

Sztajzel

et al. 2014

AJNR Am J Neuroradiol

Self Cite

149

121

View full text Add to dashboard Cite

show abstract

“…7 Nevertheless, artifacts and lower lesion conspicuity prevalent on these sequences may cause variability in the clinical evaluation of lesion burden, which is difficult to resolve in the absence of a true reference standard. 8 Reliable characteriza-tion of the lesion burden on follow-up examinations is therefore important for assessing treatment efficacy and optimizing treatment strategies. Many novel sequences have been devised attempting to improve imaging quality and lesion conspicuity with fewer artifacts and with a reasonable acquisition time.…”

mentioning

confidence: 99%

Evaluation of Focal Cervical Spinal Cord Lesions in Multiple Sclerosis: Comparison of White Matter-Suppressed T1 Inversion Recovery Sequence versus Conventional STIR and Proton Density-Weighted Turbo Spin-Echo Sequences

Sundarakumar

Smith

Hwang

et al. 2016

American Journal of Neuroradiology

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“…There are different strategies to reduce CSF artifacts including techniques to reduce time of flight and flow-related enhancement effects as well as increased numbers of excitations (prolonging scan time) or swapping of the phase and frequency encoding directions [17]. In this study, we compared T2 BLADE imaging of the cervical spine in axial orientation with our optimized T2 TSE and found that BLADE with appropriate selection of measurement parameters did improve image quality and lesion depiction without aggravation of CSF-flow artifacts seen in previous studies.…”

Section: Neuroradiology 105mentioning

confidence: 99%

BLADE Sequences in Transverse T2-weighted MR Imaging of the Cervical Spine. Cut-off for Artefacts?

Finkenzeller

Wendl

Lenhart

et al. 2014

Fortschr Röntgenstr

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Purpose: The BLADE (PROPELLER) technique reduces artefacts in imaging of the cervical spine in sagittal orientation, but till now failed to do so in axial orientation, because here it increased through plane CSF-flow artefacts, which spoiled the benefit of BLADE artefact reduction ?in plane?. The aim of this study was to compare a BLADE sequence with optimised measurement parameters in axial orientation to T2-TSE. Materials and Methods: Both sequences were compared in 58 patients with 31 discal, 16 bony and 11 spinal cord lesions. Image sharpness, reliability of spinal cord depiction, CSF flow artefacts and lesion detection were evaluated by 3?independent observers. Additionally the observers were asked which sequence they would prefer for diagnostic workup.?Statistical evaluations were performed using sign and ?2 test. Results: BLADE was significantly superior concerning image sharpness, spinal cord depiction and overall lesion detection. BLADE was rated better for most pathologies, for bony lesions the differences compared with TSE were statistically significant. Regarding CSF-flow artefacts both sequences showed no difference. All readers preferred BLADE in side by side reading. Conclusion: An optimised axial T2 BLADE sequence decreases the problems of increased through plane CSF-flow artefacts in this orientation. By reducing various other artefacts it yields better image quality and has the potential to reduce the number of non-diagnostic examinations especially in uncooperative patients. Key points: ??T2 BLADE/PROPELLER sequences proofed to reduce artefacts in sagittal spine imaging ??BLADE/PROPELLER improve image quality, but can aggravate CSF flow artefacts in axial orientation ??optimised parameter setting for axial T2 BLADE reduces ?through-plane? CSF artefacts aggravation ??optimised axial T2 BLADE reduces non-diagnostic examinations especially in uncooperative patients Citation Format: ??Finkenzeller T, Wendl CM, Lenhart S et?al. BLADE Sequences in Transverse T2-weighted MR Imaging of the Cervical Spine. Cut-off for Artefacts?. Fortschr R?ntgenstr 2015; 187: 102???108

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Brain and spine MRI artifacts at 3Tesla

Cited by 56 publications

References 13 publications

Spinal Cord Ischemia: Practical Imaging Tips, Pearls, and Pitfalls

Spinal Cord Ischemia: Practical Imaging Tips, Pearls, and Pitfalls

Evaluation of Focal Cervical Spinal Cord Lesions in Multiple Sclerosis: Comparison of White Matter-Suppressed T1 Inversion Recovery Sequence versus Conventional STIR and Proton Density-Weighted Turbo Spin-Echo Sequences

BLADE Sequences in Transverse T2-weighted MR Imaging of the Cervical Spine. Cut-off for Artefacts?

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