Lumbosacral spinal compression device with the use of a cushion back support in supine MRI
| Autor: | Jiraporn Laothamatas, Jarruwat Charoensuk, Khaisang Chousangsuntorn, Ladawan Worapruekjaru, Boonthida Hooncharoen, Witaya Sungkarat |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male medicine.medical_specialty Supine position Spinal stenosis 030218 nuclear medicine & medical imaging 03 medical and health sciences Young Adult 0302 clinical medicine Spinal Stenosis medicine Supine Position Humans Radiology Nuclear Medicine and imaging Back support Intervertebral Disc Lumbar Vertebrae Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Lumbosacral Region Magnetic resonance imaging General Medicine Middle Aged medicine.disease Low back pain Magnetic Resonance Imaging Spinal compression Cushion Female Radiology medicine.symptom business 030217 neurology & neurosurgery Lumbosacral joint |
| Zdroj: | Acta radiologica (Stockholm, Sweden : 1987). 62(8) |
| ISSN: | 1600-0455 |
| Popis: | Background We hypothesized that axial-loaded magnetic resonance imaging (MRI), modified with the use of a cushion placed behind the lower back (i.e. BS-MRI method), would simulate the standing position more accurately than an axial-loaded MRI without a cushion back support (BS). Purpose To determine whether the BS-MRI method demonstrated similar morphologies on intervertebral disc (IVD), dural sac, and spinal curvature as those detected on 90° standing MRIs in individuals with suspected spinal stenosis. Material and Methods Twenty-five subjects underwent a BS-MRI, as well as axial-loaded and standing MRI studies. Outcome measures were four radiographic parameters of the lumbar spine: IVD height (DH); dural sac cross-sectional area (DCSA); and spinal curvature (i.e. lumbar lordosis [LL] and L1-L3-L5 angle [LA]). Results Major differences (>5%) between standing MRI and BS-MRI methods were observed in DCSA, DH, and LL. Major differences between standing and axial loaded MRIs were observed only in DCSA and LA. Although BS-MRIs demonstrate an image of the lumbar spine curvature (i.e. LA) which is closer to that when standing than axial-loaded MRIs, it is likely to overestimate both narrowing of dural sac and extent of LL. Conclusion Using a compression device with a BS to simulate weight-bearing on the lumbar spine is not recommended due to: (i) overestimation of the narrowing of the dural sac and extent of LL; and (ii) underestimation of loss of disc height. Supine axial-loading produced DCSA and DH which were strongly correlated with those detected with standing MRIs. Exceptions were that LL and LA were underestimated. |
| Databáze: | OpenAIRE |
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