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
- 628 Downloads
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.
KeywordsLow 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.
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 was obtained from all individual participants included in the study.
- 5.Splendiani A, Perri M, Conchiglia A, Fasano F, Di Egidio G, Masciocchi C, Gallucci M (2013) MR assessment of lumbar disk herniation treated with oxygen-ozone diskolysis: the role of DWI and related ADC versus intervertebral disk volumetric analysis for detecting treatment response. Neuroradiol J. 26(3):347–356PubMedCrossRefGoogle Scholar
- 6.Perri M, Grattacaso G, di Tunno V, Marsecano C, Gennarelli A, Michelini G, Splendiani A, Di Cesare E, Masciocchi C, Gallucci M (2015) T2 shine-through phenomena in diffusion-weighted MR imaging of lumbar discs after oxygen-ozone discolysis: a randomized, double-blind trial with steroid and O2-O3 discolysis versus steroid only. Radiol Med [Epub ahead of print]Google Scholar
- 11.Vitzhum HE, Konig A, Seifert V (2000) Dynamic examination of the lumbar spine by using vertical, open magnetic resonance imaging. J Neurosurg 93:58–64Google Scholar
- 23.Landis RJ, Koch GG (1977) The measurement of observer agreement for categor- ical data. Biometrics. 33(159–74):15Google Scholar
- 27.Splendiani A, Ferrari F, Barile A, Masciocchi C, Gallucci M (2014) Occult neural foraminal stenosis caused by association between disc degeneration and facet joint osteoarthritis: demonstration with dedicated upright MRI system. Radiol Med. 119(3):164–174. doi: 10.1007/s11547-013-0330-7 PubMedCrossRefGoogle Scholar
- 28.Schmid MR, Stucki G, Duewell S, Wildermuth S, Romanowski B, Hodler J (1999) Changes in cross-sectional measurements of the spinal canal and intervertebral foramina as a function of body position: in vivo studies on an open-configuration MR system. AJR Am J Roentgenol 172:1095–1102PubMedCrossRefGoogle Scholar