LUMBAR SPINAL CANAL DIAMETERS AND AREA MEASUREMENTS IN HEALTHY INDIVIDUALS
Journal Title: Journal of Turkish Spinal Surgery - Year 2017, Vol 28, Issue 3
Abstract
Objective: We aimed to the lumbar spinal canal lengths and area measurements were measured in normal healthy individuals between 20 and 50 years of age in the Turkish population by Magnetic Resonance Imaging (MRI). Material and Methods: Three measurements were analyzed in axial MRI of 50 (30 male, 20 female) healthy individuals in 20-50 age groups (mean age:33,69±12). In T2-weighted fast spin-echo (FSE) axial MR images, measurements were obtained at L3-4, L4-5, L5-S1 levels. Measured lumbar spinal canal anterior-posterior diameter (DSAPD) mm and spinal canal transverse diameter (DSTD), mm and spinal canal cross-sectional area (DSCSA), mm2 measurements in healthy individuals by axial MRI (figure1,2,3). SIGNA Explorer GE 1,5 T MR device used. The patients were placed in the supine position with a cushion under both knees. T2-weighted FSE axial and sagittal images were obtained (TR/TE, 3213.48/100.00 ms for axial scan and 3207.27/100.00 ms for sagittal scan; slice thickness, 4 mm; slice gap, 0.4 mm; field of view, 16 cm for axial scan and 32 cm for sagittal scan; matrix, 256 × 216 of axial scan and 512 × 252 for sagittal scan; flip angle, 90°; ETL, 18; and excitations, 3). On T2- weighted FSE axial images, spinal canal diameter and area measurements were performed. Results: Lumbar spinal canal measurements; Lumbar DSAPD L3-4 (24,46± 2,12) mm, L4-5 (22,86± 2,07) mm, L5-S1 (20,36± 2,13) mm, DSTD L3-4 (27,16± 2,10) mm, L4-5 (27,06± 2,03) mm, L5-S1 (26,46± 2,47) mm, lumbar DSCSA L3-4 (27,20± 2,14) mm2, L4-5 (25,46± 2,07) mm2, L5-S1 (23,46± 2,27) mm2 were measured in healthy individuals. Conclusion: In evaluating lumbar spinal stenosis, it is necessary to know the lumbar spinal canal measurements in normal individuals. MRI is an important examination in evaluating lumbar spinal canal measurements.
Authors and Affiliations
Birnur YILMAZ, Burçak GÜMÜŞ, Halime ÇEVİK, Sadık Ahmet UYANIK
Keywords
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