BLADE in Sagittal T2-Weighted MR Imaging of the Cervical Spine

Fellner, Claudia; Menzel, Cynthia; Fellner, Franz A.; Ginthoer, C; Zorger, N.; Schreyer, A. G.; Jung, Ernst Michael; Feuerbach, Stefan; Finkenzeller, Thomas

doi:10.3174/ajnr.a1894

Cited by 40 publications

(34 citation statements)

References 24 publications

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“…In our routine patient collective consisting of mainly cooperative patients and a few patients with restricted ability to cooperate, motion artifacts were sufficiently corrected by the rotating kspace coverage in the BLADE technique with its repeated measurement of central k-space areas, although the dedicated motion correction algorithm was switched off in this study. This result is in good agreement with prior studies of the PROPELLER or BLADE technique in MRI of the brain [21 -23] and spine [19,20]. In the clinical routine motion artifacts often require repeated sequence acquisitions, thus prolonging the overall time of the examination and impairing patient comfort and departmental workflow.…”

Section: Discussionsupporting

confidence: 90%

“…1, 2). Most of these factors have been evaluated separately in former studies [19,20], which showed improved spinal cord/CSF contrast in BLADE by reduced overall motion artifacts and improved image sharpness. The better and clearer the spinal cord is visualized, the easier spinal lesions can be identified.…”

Section: Discussionmentioning

confidence: 99%

“…This confirms that T2-weighted BLADE imaging at the cervical spine is a reliable and robust technique with good agreement to clinically proven T2-weighted TSE sequences and better overall image quality, which can be judged even with less experience at a good level of confidence. Compared to shorter TSE sequences used in uncooperative individuals, BLADE images result in a better overall image quality with good depiction of spinal discs, bony structures and the spinal cord [19]. We would recommend its clinical use especially in uncooperative patients but even see the potential to replace TSE in standard imaging protocols at least for the Magnetom Avanto system.…”

Section: Discussionmentioning

confidence: 99%

“…In most of these studies BLADE or PROPELLER was used in transverse orientation. Recent studies [19,20] showed that by using the BLADE technique for sagittal T2-weighted imaging (T2WI) of the cervical spine, a significant reduction of several artifacts is possible. Although the overall image quality and depiction of the spinal cord was superior in the BLADE sequence, the diagnostic reliability to detect spinal cord lesions could not be judged due to the low number of spinal cord lesions included.…”

Section: Neuroradiologie 47mentioning

confidence: 99%

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BLADE Sequences in Sagittal T2-Weighted MR Imaging of the Cervical Spine and Spinal Cord – Lesion Detection and Clinical Value

Finkenzeller

Menzel

Fellner

et al. 2013

Fortschr Röntgenstr

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Purpose: Using the BLADE (PROPELLER) technique for T2-weighted MR imaging of the cervical spine has proven to be a reliable tool for reducing artifacts typically for this region. The aim of this study was to evaluate whether the application of BLADE sequences has an impact on the detection of small or low contrast spinal cord and epidural lesions. Materials and Methods: A standard TSE and a BLADE sequence were compared in 33 patients with 46 spinal cord and epidural lesions for T2-weighted sagittal imaging of the cervical spine. Image sharpness, visualization of the dura, reliability of spinal cord depiction as well as lesion contrast were evaluated by two independent readers. Additionally two experienced neuroradiologists selected in consensus the sequence they would prefer for diagnostic purposes. Statistical evaluations were performed using the sign and the ?2 test. Results: BLADE was significantly superior to TSE regarding image sharpness, visualization of the dura and reliability of spinal cord depiction. Regarding lesion contrast there was a positive trend towards the BLADE sequence. In 17 of 46 lesions, BLADE was judged superior to TSE, while TSE was favored in 10 lesions. In consensus reading both neuroradiologists preferred BLADE for overall image quality in 27 of 33 patients and for lesion contrast in 10 and TSE in 14 of the 33 patients, but 3 TSE sequences were rated as non-diagnostic regarding this criterion. Conclusion: For the detection of even small and low-contrast spinal cord lesions, BLADE is at least equivalent to TSE, yielding better overall image quality and fewer non-diagnostic images. Citation Format:

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Neuroradiologie 47mentioning

confidence: 99%

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BLADE Sequences in Sagittal T2-Weighted MR Imaging of the Cervical Spine and Spinal Cord – Lesion Detection and Clinical Value

Finkenzeller

Menzel

Fellner

et al. 2013

Fortschr Röntgenstr

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“…T 2 -weighted imaging is a very common clinical imaging contrast; amongst other applications, it plays a crucial role in the detection of gray and white matter lesions such as in multiple sclerosis [1,2], Alzheimer's disease [3], and cancer [4]. This imaging technique should benefit from the increased signal-to-noise ratio (SNR) available at high field strengths (B 0 ≥ 3T), allowing acquisitions with higher spatial resolution and hence better visualization of small brain structures.…”

Section: Introductionmentioning

confidence: 99%

3D T 2-weighted imaging at 7T using dynamic kT-points on single-transmit MRI systems

Eggenschwiler

O’Brien

Gallichan

et al. 2016

Magn Reson Mater Phy

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pulses was demonstrated via simulations. Images acquired with dynamic k T -points showed systematic improvement of signal and contrast at 7T over regular TSE-especially in cerebellar and temporal lobe regions without the need of parallel transmission. Conclusion Designing dynamic k T -points for a 3D TSE sequence allows the acquisition of T 2 -weighted brain images on a single-transmit system at ultra-high field with reduced dropout and only mild residual effects due to the B 1 + inhomogeneity.

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Aliasing artifacts with the BLADE technique: Causes and effective suppression

Kojima

Morita

Ueno

et al. 2011

Magnetic Resonance Imaging

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Purpose: To elucidate the causes of aliasing artifacts with the BLADE technique and clarify the effective suppression methods. Materials and Methods:We separately observed the aliasing artifacts of BLADE from features inside and then outside the defined field-of-view (FOV) using phantom studies. The effectiveness of suppressing them with phase oversampling (POS) and presaturation pulses (SAT) was evaluated. Finally, our observations were confirmed for a healthy volunteer.Results: Characteristic aliasing artifacts were observed from both inside and outside the FOV. Those from inside the FOV were sufficiently suppressed by using a POS of 25%, considering the acquisition time prolongation. Those from outside the FOV were nearly suppressed using SAT outside the FOV without selecting needless receiver coils. Aliasing artifacts on the coronal images of the head and neck with a healthy volunteer were completely suppressed by a combination of using a POS of 25% and using SAT on all four sides outside the FOV. Conclusion:The characteristic aliasing artifacts of BLADE are caused from both inside and outside the defined FOV. They can be effectively suppressed by a combination of using a POS of 25% and using SAT on all four sides outside the FOV.

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BLADE in Sagittal T2-Weighted MR Imaging of the Cervical Spine

Cited by 40 publications

References 24 publications

BLADE Sequences in Sagittal T2-Weighted MR Imaging of the Cervical Spine and Spinal Cord – Lesion Detection and Clinical Value

BLADE Sequences in Sagittal T2-Weighted MR Imaging of the Cervical Spine and Spinal Cord – Lesion Detection and Clinical Value

3D T 2-weighted imaging at 7T using dynamic kT-points on single-transmit MRI systems

Aliasing artifacts with the BLADE technique: Causes and effective suppression

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