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

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Japanese Journal of Radiology Aims and scope Submit manuscript

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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Authors and Affiliations

  1. Department of Radiology, Wakakusa Daiichi Hospital, 1-6, Wakakusa-cho, Higashiosaka city, Osaka, 579-8056, Japan

    Naoko Kinoshita, Shigeko Tanaka & Yuko Sugimori

  2. Sakaguchi Clinic, Osaka, Japan

    Koichi Nakahira

  3. Department of Orthopedics, Wakakusa Daiichi Hospital, Osaka, Japan

    Koji Ryoke

  4. Department of Diagnostic and Interventional Radiology, Osaka City University Graduate School of Medicine, Osaka, Japan

    Toshiyuki Matsuoka & Yukio Miki

  5. Department of Neurosurgery, Minoh City Hospital, Osaka, Japan

    Masayuki Fujioka

Authors
  1. Naoko Kinoshita
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  2. Shigeko Tanaka
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  3. Yuko Sugimori
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  4. Koichi Nakahira
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  5. Koji Ryoke
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  6. Toshiyuki Matsuoka
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  7. Masayuki Fujioka
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  8. Yukio Miki
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Corresponding author

Correspondence to Naoko Kinoshita.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical statement

We declare that all human studies have been approved by our Institutional Ethics Committee and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. We declare that all patients gave informed consent prior to inclusion in this study.

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Cite this article

Kinoshita, N., Tanaka, S., Sugimori, Y. et al. High contrast between lumbar nerve roots and surrounding structures using dual echo 3D turbo spin echo additional fusion images. Jpn J Radiol 36, 472–476 (2018). https://doi.org/10.1007/s11604-018-0751-2

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  • DOI: https://doi.org/10.1007/s11604-018-0751-2

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