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Lumbar myelography with three-dimensional MR imaging

✍ Scribed by Rainer J. Zisch; Wolfgang Artmann; Hans P. Hollenbach

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
492 KB
Volume
2
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

A strongly T2*‐weighted, three‐dimensional (3D) PSIF (time‐reversed FISP (fast imaging with steady‐state precession)) gradient‐echo magnetic resonance (MR) sequence, with postprocessing of the 3D data set with a maximum‐intensity projection (MIP) algorithm, produced x‐ray myelography–equivalent images. The method was tested in 10 healthy volunteers to optimize sequence parameters and was evaluated in 30 patients with proven lumbar disk disease. MIP myelograms, unlike two‐dimensional MR images, could not show the pathologic disks themselves but clearly demonstrated the effect on the thecal sac, giving a clear overall view of its geometry and dimensions, especially when displayed in a cine loop. All 28 medial and mediolateral disk herniations could be visualized, whereas only three of eight intraforaminal disk herniations were seen on MR myelograms.

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