3D MR Myelography

VanDyke, Carolyn W.; Modic, Michael T.; Beale, Sarah M.; Amartur, Sundar; Ross, Jeffrey S.

doi:10.1097/00004728-199205000-00033

Cited by 29 publications

(15 citation statements)

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“…17,18 The allowable variety of image parameters permits fi ne-tuning of the sequence. As artifacts attributable to the pulsation of CSF are a major cause of image quality degradation of MRI in patients with lumbar canal stenosis, we optimized the parameters (TR and fl ip angle) of 3D FS-nSSFP to acquire high-contrast lumbar spine images with suppression of CSF fl ow artifacts.…”

Section: Discussionmentioning

confidence: 99%

“…16 Also, in balanced sequences, the 3D balanced non-steady-state free precession (3D nSSFP) sequence enables a wide choice of sequence parameters in comparison with standard 3D balanced SSFP sequences. 17,18 We evaluated and compared the usefulness of continuous thin-slice coronal imaging acquired with the 3D fat-suppressed multi-shot balanced non-steady-state free precession (3D FS-nSSFP) sequence (also known as the 3D multi-shot b-TFE sequence) and the 3D T1-GRE sequence (also known as the 3D T1-FFE sequence for visualization of exiting lumbar nerve roots and for assessment of lumbar nerve root compression.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of lumber nerve root compression using thin-slice thickness coronal magnetic resonance imaging: three-dimensional fat-suppressed multi-shot balanced non-steady-state free precession versus threedimensional T1-weighted spoiled gradient-recalled echo

Tanitame

Tani

et al. 2011

Jpn J Radiol

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of lumber nerve root compression using thin-slice thickness coronal magnetic resonance imaging: three-dimensional fat-suppressed multi-shot balanced non-steady-state free precession versus threedimensional T1-weighted spoiled gradient-recalled echo

Tanitame

Tani

et al. 2011

Jpn J Radiol

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“…TSE sequences, in which the echo train is large enough to cover all (single-shot) or most (segmented multi-shot) lines of the k space within a single TR (repetition time) [4], can be used to generate myelographic images. Although this TSE technique has revealed high quality myelograms [15,17,18], MR-myelography examinations were initially performed by most authors with postprocessing MIP projections from conventional T2-weighted images obtained in very long acquisition times [8,11,14]. MR-myelography obtained with the TSE single-or multi-shot single-slice technique allows the simultaneous acquisition of several different planes within the same sequence, obtained in shorter acquisition times and with fewer artifacts [4,15,18].…”

Section: Discussionmentioning

confidence: 99%

MR-myelography as an adjunct to the MR examination of the degenerative spine

Ferrer

Martí‐Bonmatí²,

Mollá

et al. 2004

Magn Reson Mater Phy

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Our objective was to analyse the usefulness of single-slice MR-myelography images as a complementary test to conventional MR of the spine in patients with clinically suspected degenerative spine disease. A prospective analysis of 1022 consecutive patients studied with conventional MR and MR-myelography (four acquisitions: one coronal plane, one sagittal plane, and two oblique lateral, right and left planes) examinations was performed. Conventional MR and MR-myelography studies were classified as positive when morphological or structural alterations were noted. Positive MR-myelography information was also categorized as relevant if findings were considered important and radiologically significative to the final diagnosis (either by increasing the radiologists confidence in the diagnosis or because the findings were not observed in the conventional study). Other positive findings were considered non- relevant. There were 62% cases considered positive in the MR-myelography examination. Of them, 3% revealed no alterations on the conventional MR examination. Of the negative MR-myelography studies, 75% had a positive conventional MR examination. Considered as diagnostic techniques, their Kappa concordance was poor. However, MR-myelography complemented the information obtained with the conventional MR examination of the spine, this information being relevant to the final MR diagnosis in 22% of the total number of cases. The contribution of MR-myelography was not different in the three spinal levels. In conclusion, MR-myelography complements the information obtained with conventional MR in a large number of cases.

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“…They were replaced by magnetic resonance myelography with a rapid three-dimensional T2-weighted gradient echo sequence [27]. The thus calculated maximal intensity projections and multiplanar reconstructions were sometimes also useless in clinical practice because of the poor spatial resolution.…”

Section: Introductionmentioning

confidence: 99%