Clinical applications of diffusion magnetic resonance imaging of the lumbar foraminal nerve root entrapment.

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
Y EguchiK Takahashi

Abstract

Diffusion-weighted imaging (DWI) can provide valuable structural information about tissues that may be useful for clinical applications in evaluating lumbar foraminal nerve root entrapment. Our purpose was to visualize the lumbar nerve root and to analyze its morphology, and to measure its apparent diffusion coefficient (ADC) in healthy volunteers and patients with lumbar foraminal stenosis using 1.5-T magnetic resonance imaging. Fourteen patients with lumbar foraminal stenosis and 14 healthy volunteers were studied. Regions of interest were placed at the fourth and fifth lumbar root at dorsal root ganglia and distal spinal nerves (at L4 and L5) and the first sacral root and distal spinal nerve (S1) on DWI to quantify mean ADC values. The anatomic parameters of the spinal nerve roots can also be determined by neurography. In patients, mean ADC values were significantly higher in entrapped roots and distal spinal nerve than in intact ones. Neurography also showed abnormalities such as nerve indentation, swelling and running transversely in their course through the foramen. In all patients, leg pain was ameliorated after selective decompression (n = 9) or nerve block (n = 5). We demonstrated the first use of DWI and neurography o...Continue Reading

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Citations

Jan 18, 2011·European Radiology·Vincent BalbiAnne Cotten
Apr 2, 2013·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Kanji SasakiTakao Homma
Jun 29, 2013·Journal of Neuroradiology. Journal De Neuroradiologie·Yasar AltunErtugrul Uzar
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Oct 10, 2014·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·Maximilian ReinholdChristian Kremser
May 18, 2016·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Hua-Biao ChenBo Bai
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Sep 24, 2021·Spinal Cord Series and Cases·Morito TakanoKota Watanabe

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