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01-08-2018 | Original Article

High contrast between lumbar nerve roots and surrounding structures using dual echo 3D turbo spin echo additional fusion images

Authors: Naoko Kinoshita, Shigeko Tanaka, Yuko Sugimori, Koichi Nakahira, Koji Ryoke, Toshiyuki Matsuoka, Masayuki Fujioka, Yukio Miki

Published in: Japanese Journal of Radiology | Issue 8/2018

Abstract

Purpose

We performed lumbar spinal magnetic resonance imaging of three-dimensional (3D) dual echo volumetric isotropic turbo spin echo acquisition (DE-VISTA) and constructed DE-VISTA additional fusion images (DE-VISTA-AFI), which is the addition of DE-VISTA proton density-weighted images (DE-VISTA-PDWI) to DE-VISTA T2-weighted images (DE-VISTA-T2WI). The aim of this study was to clarify whether DE-VISTA-AFI was able to clearly delineate spinal nerve roots.

Methods

A total of 677 patients underwent lumbar MR imaging, and the signal ratio (SR) between cerebrospinal fluid and nerve roots inside the dural sac and the SR between fat and nerve roots outside the dural sac were estimated using DE-VISTA-AFI, DE-VISTA-PDWI, DE-VISTA-T2WI, and 2D-T2WI.

Results

The SR between cerebrospinal fluid and nerve roots inside the dural sac on DE-VISTA-AFI was higher than that on DE-VISTA-PDWI (p < 0.0001) and on 2D T2WI (p < 0.0001). The SR between the fat tissue and nerve roots outside the dural sac on DE-VISTA-AFI was higher than that on DE-VISTA-PDWI (p < 0.0001) and 2D T2WI (p < 0.0001).

Conclusion

DE-VISTA-AFI could clearly delineate the entire length of the lumbar nerve roots that run from the cauda equina in the spinal fluid through to the fat in the lateral recess, intervertebral foramen, and outside the intervertebral foramen.

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Title: High contrast between lumbar nerve roots and surrounding structures using dual echo 3D turbo spin echo additional fusion images
Authors: Naoko Kinoshita
Shigeko Tanaka
Yuko Sugimori
Koichi Nakahira
Koji Ryoke
Toshiyuki Matsuoka
Masayuki Fujioka
Yukio Miki
Publication date: 01-08-2018
Publisher: Springer Japan
Published in: Japanese Journal of Radiology / Issue 8/2018
Print ISSN: 1867-1071
Electronic ISSN: 1867-108X
DOI: https://doi.org/10.1007/s11604-018-0751-2

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

High contrast between lumbar nerve roots and surrounding structures using dual echo 3D turbo spin echo additional fusion images

Abstract

Purpose

Methods

Results

Conclusion

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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