Japanese Journal of Radiology

, Volume 36, Issue 8, pp 472–476 | Cite as

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

  • Naoko KinoshitaEmail author
  • Shigeko Tanaka
  • Yuko Sugimori
  • Koichi Nakahira
  • Koji Ryoke
  • Toshiyuki Matsuoka
  • Masayuki Fujioka
  • Yukio Miki
Original Article



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.


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.


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).


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.


MRI Lumbar nerve root VISTA 3D fast spin echo Dual echo 


Compliance with ethical standards

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.


  1. 1.
    Shen J, Wang HY, Chen JY, Liang BL. Morphologic analysis of normal human lumbar dorsal root ganglion by 3D MR imaging. AJNR Am J Neuroradiol. 2006;27:2098–103.PubMedGoogle Scholar
  2. 2.
    Byun WM, Ahn SH, Ahn MW. Value of 3D lumbosacral radiculography in the diagnosis of symptomatic chemical radiculitis. AJNR Am J Neuroradiol. 2012;33:529–34.CrossRefPubMedGoogle Scholar
  3. 3.
    Rodegerdts EA, Boss A, Riemarzik K, Lichy M, Schick F, Claussen CD, et al. 3D imaging of the whole spine at 3T compared to 1.5T: initial experiences. Acta Radiol. 2006;47:488–93.CrossRefPubMedGoogle Scholar
  4. 4.
    Blizzard DJ, Haims AH, Lischuk AW, Arunakul R, Hustedt JW, Grauer JN. 3D-FSE Isotropic MRI of the lumbar spine: novel application of an existing technology. J Spinal Disord Tech. 2015;28:152–7.CrossRefPubMedGoogle Scholar
  5. 5.
    Lee S, Jee WH, Jung JY, Lee SY, Ryu KS, Ha KY. MRI of the lumbar spine: comparison of 3D isotropic turbo spin-echo SPACE sequence versus conventional 2D sequences at 3.0 T. Acta Radiol. 2015;56:174–81.CrossRefPubMedGoogle Scholar
  6. 6.
    Maldjian C, Adam RJ, Akhtar N, Maldjian JA, Bonakdarpour A, Boyko O. Volume (three-dimensional) fast spin-echo imaging of the lumbar spine. Acad Radiol. 1999;6:339–42.CrossRefPubMedGoogle Scholar
  7. 7.
    Sugimori Y, Tanaka S, Nishimura T, Yamamoto A, Ohfuji S, Naito Y, et al. Usefulness of dual echo volumetric isotropic turbo spin echo acquisition (VISTA) in magnetic resonance imaging of the temporomandibular joint. MRMS. 2013;25(12):249–59.CrossRefGoogle Scholar
  8. 8.
    Henkelman RM, Hardy PA, Bishop JE, Poon CS, Plewes DB. Why fat is bright in RARE and fast spin-echo imaging. J Magn Reson Imaging. 1992;2:533–40.CrossRefPubMedGoogle Scholar
  9. 9.
    Melhem ER, Itoh R, Folkers PJ. Cervical spine: three-dimensional fast spin-echo MR imaging–improved recovery of longitudinal magnetization with driven equilibrium pulse. Radiology. 2001;218:286–8.CrossRefGoogle Scholar
  10. 10.
    Fellner C, Geissler A, Held P, Strotzer M, Treibel W, Fellner F. Signal, contrast, and resolution in optimized PD- and T2-weighted turbo SE images of the knee. J Comput Assist Tomogr. 1995;19:96–105.CrossRefPubMedGoogle Scholar
  11. 11.
    Duan CY, Espinoza Orias AA, Shott S, An HS, Andersson GBJ, Hu JZ, et al. In vivo measurement of the subchondral bone thickness of lumbar facet joint using magnetic resonance imaging. Osteoarthr Cartilage. 2011;19(1):96–102.CrossRefGoogle Scholar
  12. 12.
    Kim KY, Kim YT, Lee CS, Shin MJ. MRI classification of lumbar herniated intervertebral disc. Orthopedics. 1992;15:493–7.PubMedGoogle Scholar
  13. 13.
    Yoo HM, Kim SJ, Choi CG, Lee DH, Lee JH, Suh DC, et al. Detection of CSF leak in spinal CSF leak syndrome using MR myelography; correlation with radioisotope cisternography. AJNR Am J Neuroradiol. 2008;29:649–54.CrossRefPubMedGoogle Scholar

Copyright information

© Japan Radiological Society 2018

Authors and Affiliations

  1. 1.Department of RadiologyWakakusa Daiichi HospitalOsakaJapan
  2. 2.Sakaguchi ClinicOsakaJapan
  3. 3.Department of OrthopedicsWakakusa Daiichi HospitalOsakaJapan
  4. 4.Department of Diagnostic and Interventional RadiologyOsaka City University Graduate School of MedicineOsakaJapan
  5. 5.Department of NeurosurgeryMinoh City HospitalOsakaJapan

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