Adrienne N Dula1, Siddharama Pawate2, Richard D Dortch1, Robert L Barry1, Kristen M George-Durrett3, Bailey D Lyttle2, Lindsey M Dethrage3, John C Gore4, Seth A Smith5. 1. Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, USA/Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, USA. 2. Department of Neuroscience, Vanderbilt University Medical Center, USA. 3. Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, USA. 4. Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, USA/Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, USA/Department of Biomedical Engineering, Vanderbilt University Medical Center, USA. 5. Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, USA/Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, USA/Department of Biomedical Engineering, Vanderbilt University Medical Center, USA seth.smith@vanderbilt.edu.
Abstract
BACKGROUND: The clinical course of multiple sclerosis (MS) is mainly attributable to cervical and upper thoracic spinal cord dysfunction. High-resolution, 7T anatomical imaging of the cervical spinal cord is presented. Image contrast between gray/white matter and lesions surpasses conventional, clinical T1- and T2-weighted sequences at lower field strengths. OBJECTIVE: To study the spinal cord of healthy controls and patients with MS using magnetic resonance imaging at 7T. METHODS: Axial (C2-C5) T1- and T2*-weighted and sagittal T2*-/spin-density-weighted images were acquired at 7T in 13 healthy volunteers (age 22-40 years), and 15 clinically diagnosed MS patients (age 19-53 years, Extended Disability Status Scale, (EDSS) 0-3) in addition to clinical 3T scans. In healthy volunteers, a high-resolution multi-echo gradient echo scan was obtained over the same geometry at 3T. Evaluation included signal and contrast to noise ratios and lesion counts for healthy and patient volunteers, respectively. RESULTS/ CONCLUSION: High-resolution images at 7T exceeded resolutions reported at lower field strengths. Gray and white matter were sharply demarcated and MS lesions were more readily visualized at 7T compared to clinical acquisitions, with lesions apparent at both fields. Nerve roots were clearly visualized. White matter lesion counts averaged 4.7 vs 3.1 (52% increase) per patient at 7T vs 3T, respectively (p=0.05).
BACKGROUND: The clinical course of multiple sclerosis (MS) is mainly attributable to cervical and upper thoracic spinal cord dysfunction. High-resolution, 7T anatomical imaging of the cervical spinal cord is presented. Image contrast between gray/white matter and lesions surpasses conventional, clinical T1- and T2-weighted sequences at lower field strengths. OBJECTIVE: To study the spinal cord of healthy controls and patients with MS using magnetic resonance imaging at 7T. METHODS: Axial (C2-C5) T1- and T2*-weighted and sagittal T2*-/spin-density-weighted images were acquired at 7T in 13 healthy volunteers (age 22-40 years), and 15 clinically diagnosed MSpatients (age 19-53 years, Extended Disability Status Scale, (EDSS) 0-3) in addition to clinical 3T scans. In healthy volunteers, a high-resolution multi-echo gradient echo scan was obtained over the same geometry at 3T. Evaluation included signal and contrast to noise ratios and lesion counts for healthy and patient volunteers, respectively. RESULTS/ CONCLUSION: High-resolution images at 7T exceeded resolutions reported at lower field strengths. Gray and white matter were sharply demarcated and MS lesions were more readily visualized at 7T compared to clinical acquisitions, with lesions apparent at both fields. Nerve roots were clearly visualized. White matter lesion counts averaged 4.7 vs 3.1 (52% increase) per patient at 7T vs 3T, respectively (p=0.05).
Authors: Seth A Smith; Xavier Golay; Ali Fatemi; Craig K Jones; Gerald V Raymond; Hugo W Moser; Peter C M van Zijl Journal: Magn Reson Med Date: 2005-07 Impact factor: 4.668
Authors: M A van Walderveen; W Kamphorst; P Scheltens; J H van Waesberghe; R Ravid; J Valk; C H Polman; F Barkhof Journal: Neurology Date: 1998-05 Impact factor: 9.910
Authors: A Fatemi; S A Smith; P Dubey; K M Zackowski; A J Bastian; P C van Zijl; H W Moser; G V Raymond; X Golay Journal: Neurology Date: 2005-05-24 Impact factor: 9.910
Authors: D Kidd; J W Thorpe; A J Thompson; B E Kendall; I F Moseley; D G MacManus; W I McDonald; D H Miller Journal: Neurology Date: 1993-12 Impact factor: 9.910
Authors: Nancy L Sicotte; Rhonda R Voskuhl; Seth Bouvier; Rochelle Klutch; Mark S Cohen; John C Mazziotta Journal: Invest Radiol Date: 2003-07 Impact factor: 6.016
Authors: Salil Soman; Jose A Bregni; Berkin Bilgic; Ursula Nemec; Audrey Fan; Zhe Liu; Robert L Barry; Jiang Du; Keith Main; Jerome Yesavage; Maheen M Adamson; Michael Moseley; Yi Wang Journal: Curr Radiol Rep Date: 2017-02-14
Authors: Subhash Tummala; Tarun Singhal; Vinit V Oommen; Gloria Kim; Fariha Khalid; Brian C Healy; Rohit Bakshi Journal: Int J MS Care Date: 2017 May-Jun
Authors: Benjamin N Conrad; Robert L Barry; Baxter P Rogers; Satoshi Maki; Arabinda Mishra; Saakshi Thukral; Subramaniam Sriram; Aashim Bhatia; Siddharama Pawate; John C Gore; Seth A Smith Journal: Brain Date: 2018-06-01 Impact factor: 13.501