Applications of diffusion weighted imaging in detection of radiating pain to lower extremities

Authors

Abstract:

Introduction: To examine the hypothesis that diffusion weighted imaging (DWI) in lumbosacral region could reveal sciatic nerve course swelling that lead to lower extremity pain. The aim of present article was to find and evaluate the diffusion weighted coefficients (b-values) for scrutinizing sciatic nerve tract changes in lumbosacral region. Materials and methods: Lumbar area was imaged in 30 patients with lower extremity pain in one side (left or right) at 1.5 T MR with routine protocols and DWI. Two stages for processing images were generated. Distance of sciatic nerve fibers between all patients In terms of Gray level average (GLA) and Contrast average (CA) on each side were calculated by MATLAB software. An appropriate statistical test such as Paired T test was used and. P<0.05 was considered as significant Results: In the first stage of image processing there was no significant result in affected side rather than normal side. In the second stage, the mean b-value was significantly correlated with affected side that represent nerve swelling and the mean ADC was positively related to affected side. In b-value images, the diameter of affected side is greater than the healthy side and P<0.001 showed significant results. The CA of affected side is greater than healthy side and P<0.001 illustrated significant results. For GLA, statistics showed the greater values for affected side in comparison to healthy side and P<0.001 was significant. Conclusion: Based on the results of present study, neurography is possible way to visualize early changes, such as nerve indentation and swelling, and to qualitatively evaluate affected lumbar nerves course in patients with lower extremity pains.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

applications of diffusion weighted imaging in detection of radiating pain to lower extremities

introduction: to examine the hypothesis that diffusion weighted imaging (dwi) in lumbosacral region could reveal sciatic nerve course swelling that lead to lower extremity pain. the aim of present article was to find and evaluate the diffusion weighted coefficients (b-values) for scrutinizing sciatic nerve tract changes in lumbosacral region. materials and methods: lumbar area was imaged in 30 ...

full text

Signal Intensity of High B-value Diffusion-weighted Imaging for the Detection of Prostate Cancer

Background: Diffusion-weighted imaging (DWI) is a main component of multiparametric MRI for prostate cancer detection. Recently, high b value DWI has gained more attention because of its capability for tumor characterization. Objective: To assess based on histopathological findings of transrectal ultrasound (TRUS)-guided prostate biopsy as a reference, an...

full text

Radiating pain to the lower extremities caused by lumbar disk rupture without spinal nerve root involvement.

PURPOSE To locate the origin of the pain during lumbar diskography by means of a limited intradiskal injection of a local anesthetic. METHODS Lumbar diskography by the direct central posterior approach was performed in 235 consecutive patients. In 17 patients, severe and persistent low back pain, with unilateral or bilateral radiation to the lower extremities, was provoked by contrast injecti...

full text

The Utility of Diffusion Weighted Magnetic Resonance Imaging in Detection of the Origin of the Brain Solid Metastatic Tumors

Background: Early diagnosis of brain tumors has significant effect on the treatment process. Brain metastatic tumors are usually diagnosed following the neurological symptoms in patients or incidentally after Computerized Tomography (CT) scan and Magnetic Resonance Imaging (MRI) requests of the brain. Objectives: Implementation of a new method for being informed about the origin of brain tumors...

full text

Diffusion - weighted imaging for body imaging applications

Diffusion-weighted MRI (DWI) by means of apparent diffusion coefficient (ADC) calculation can be used for in vivo quantification of the combined effects of capillary perfusion and diffusion. With the advent of echoplanar imaging (EPI), DWI of the abdomen has become possible with fast imaging times minimizing the effect of gross physiologic motion from respiration and cardiac movement. Several s...

full text

My Resources

Save resource for easier access later

Save to my library Already added to my library

{@ msg_add @}


Journal title

volume 2  issue 3

pages  1- 9

publication date 2015-08

By following a journal you will be notified via email when a new issue of this journal is published.

Keywords

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023