La radiologia medica

, Volume 121, Issue 1, pp 38–44 | Cite as

Magnetic resonance imaging (MRI) of the lumbar spine with dedicated G-scan machine in the upright position: a retrospective study and our experience in 10 years with 4305 patients

  • Alessandra Splendiani
  • Marco PerriEmail author
  • Giuseppe Grattacaso
  • Valeria Di Tunno
  • Claudia Marsecano
  • Luca Panebianco
  • Antonio Gennarelli
  • Valentina Felli
  • Marco Varrassi
  • Antonio Barile
  • Ernesto Di Cesare
  • Carlo Masciocchi
  • Massimo Gallucci



To evaluate the pathological changes of the lumbar spine and the instability of the lumbar intervertebral joints observed in patients with low back pain, with the study of the transition from supine to orthostatic position through the use of dedicated MRI-G-scan machine.

Materials and Methods

Within 10 years, 4305 patients, aged between 21 and 80 years old, with history of low back pain with or without sciatica, underwent MRI examinations in upright and in supine position. The open MRI-scanner used is Esaote G-scan, which enables the acquisition of images in supine and standing positions. The used sequences were sagittal T2-weighted FSE, T1-weighted SE and axial 3D HYCE. Patients were divided into two groups: “negatives”, with no changes in the two positions (supine and upright), and “positives”, with MRI modifications of imaging in upright position.


Orthostatic examination showed MRI changes in 2870 out of 4305 (66.6 %) patients, including 1252 males and 1618 females.


The G-scan is useful to assess instability of the lumbar spine detecting hidden modifications of protrusions and/or herniated discs already present in the supine position. It is also helpful in assessing the presence or modification of spondylolisthesis and lumbar canal stenosis.


Low back pain Open MRI scanner 0.25 T Lumbar intervertebral instability Herniated disc 


Compliance with ethical standards

Conflict of interest

All authors declare that they no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Italian Society of Medical Radiology 2015

Authors and Affiliations

  • Alessandra Splendiani
    • 1
  • Marco Perri
    • 2
    Email author
  • Giuseppe Grattacaso
    • 2
  • Valeria Di Tunno
    • 2
  • Claudia Marsecano
    • 2
  • Luca Panebianco
    • 2
  • Antonio Gennarelli
    • 2
  • Valentina Felli
    • 2
  • Marco Varrassi
    • 2
  • Antonio Barile
    • 2
  • Ernesto Di Cesare
    • 2
  • Carlo Masciocchi
    • 2
  • Massimo Gallucci
    • 1
  1. 1.Division of Neuroradiology, Department of Biotechnological and Applied Clinical Science, S Salvatore HospitalUniversity of L’AquilaL’AquilaItaly
  2. 2.Division of Radiology, Department of Biotechnological and Applied Clinical Science, S Salvatore HospitalUniversity of L’AquilaL’AquilaItaly

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