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Dynamic MR in sufferers affected by neurogenical claudication: approach and outcomes from a single-center expertise.
Neuroradiology. 2016 Aug;58(eight):765-70
Authors: Muto M, Giurazza F, Guarnieri G, Senese R, Schena E, Zeccolini F, Diano A
Summary
INTRODUCTION: This examine aimed to find out adjustments in dimension of lumbar spinal canal and associated articular constructions, throughout dynamic MR scans acquired in symptomatic sufferers standing upright utilizing a brand new open MR system.
METHODS: Forty sufferers (imply age 58.four years) affected by lumbar again ache related to claudication, referring signs since greater than 6 months. Nobody underwent to earlier backbone surgical procedure. MR scans have been carried out with a novel open zero.5-T scanner, affected person supine and upright (90°). Lumbar lordotic angle, flavum ligament thickness, herniated discs, spinal canal space, spinal canal and dural sac antero-posterior diameters, and spinal alignment have been measured and in contrast in each supine and upright positions. Imply scanning time was 43 min.
RESULTS: All of the thought of parameters confirmed a statistically vital distinction, apart from lumbar lordotic angle. Imply proportion variations transferring from supine to upright have been +three.9 % for lumbar lordotic angle, +15 % for flavum ligament thickness, +16.2 % for sagittal disc bulge, -10.eight % for dural sac diameter, -13.1 % for spinal canal diameter, and -15.eight % for spinal canal space. In supine place, no affected person introduced with spondylolisthesis; transferring to upright place, 4 sufferers confirmed spondylolisthesis (grade I).
CONCLUSION: Dynamic MR is a useful diagnostic examination to research the constructions concerned in lumbar again ache as a result of spinal canal stenosis and spondylolisthesis; in supine place, related components may be underestimated or hidden, changing into considerable solely affected person standing upright. On this collection, flavum ligament thickening introduced a job corresponding to disc bulge for narrowing of lumbar spinal canal.
PMID: 27209418 [PubMed – indexed for MEDLINE]