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Lumbar myelography with three‐dimensional MR imaging
Author(s) -
Zisch Rainer J.,
Artmann Wolfgang,
Hollenbach Hans P.
Publication year - 1992
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880020619
Subject(s) - maximum intensity projection , lumbar , magnetic resonance imaging , myelography , medicine , nuclear medicine , fast spin echo , radiology , intervertebral disk , flip angle , nuclear magnetic resonance , anatomy , physics , spinal cord , angiography , psychiatry
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.