Linda A Bradbury1,2, Kelly A Hollis1,2, Benoît Gautier1,2, Sateesh Shankaranarayana1,2, Philip C Robinson1,2, Nivene Saad1,2, Kim-Anh Lê Cao1,2, Matthew A Brown3,4. 1. From the Institute of Health and Biomedical Innovation, Queensland University of Technology, Translational Research Institute, Princess Alexandra Hospital; University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; Royal Brisbane and Women's Hospital; The University of Queensland, School of Medicine, Brisbane, Queensland, Australia. 2. L.A. Bradbury, MSc, MNPSt, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute; K.A. Hollis, BScN, RN, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute; B. Gautier, PhD, University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; S. Shankaranarayana, MBBS, PhD, Princess Alexandra Hospital; P.C. Robinson, PhD, FRACP, Royal Brisbane and Women's Hospital; N. Saad, MD, FRANZCR, Princess Alexandra Hospital; K.A. Lê Cao, PhD, University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; M.A. Brown, MD, PhD, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute. 3. From the Institute of Health and Biomedical Innovation, Queensland University of Technology, Translational Research Institute, Princess Alexandra Hospital; University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; Royal Brisbane and Women's Hospital; The University of Queensland, School of Medicine, Brisbane, Queensland, Australia. Matt.brown@qut.edu.au. 4. L.A. Bradbury, MSc, MNPSt, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute; K.A. Hollis, BScN, RN, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute; B. Gautier, PhD, University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; S. Shankaranarayana, MBBS, PhD, Princess Alexandra Hospital; P.C. Robinson, PhD, FRACP, Royal Brisbane and Women's Hospital; N. Saad, MD, FRANZCR, Princess Alexandra Hospital; K.A. Lê Cao, PhD, University of Queensland Diamantina Institute, Translational Research Institute, Princess Alexandra Hospital; M.A. Brown, MD, PhD, Institute of Health and Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology at Translational Research Institute. Matt.brown@qut.edu.au.
Abstract
OBJECTIVE: We tested the discriminatory capacity of diffusion-weighted magnetic resonance imaging (DWI) and its potential as an objective measure of treatment response to tumor necrosis factor inhibition in ankylosing spondylitis (AS). METHODS: Three cohorts were studied prospectively: (1) 18 AS patients with Bath Ankylosing Spondylitis Disease Activity Index > 4, and erythrocyte sedimentation rate > 25 and/or C-reactive protein > 10 meeting the modified New York criteria for AS; (2) 20 cases of nonradiographic axial spondyloarthritis (nr-axSpA) as defined by the Assessment of Spondyloarthritis international Society (ASAS) criteria; and (3) 20 non-AS patients with chronic low back pain, aged between 18 and 45 years, who did not meet the imaging arm of the ASAS criteria for axSpA. Group 1 patients were studied prior to and following adalimumab treatment. Patients were assessed by DWI and conventional magnetic resonance imaging (MRI), and standard nonimaging measures. RESULTS: At baseline, in contrast to standard nonimaging measures, DWI apparent diffusion coefficient (ADC) values showed good discriminatory performance [area under the curve (AUC) > 80% for Group 1 or 2 compared with Group 3]. DWI ADC values were significantly lower posttreatment (0.45 ± 0.433 before, 0.154 ± 0.23 after, p = 0.0017), but had modest discriminating capacity comparing pre- and posttreatment measures (AUC = 68%). This performance was similar to the manual Spondyloarthritis Research Consortium of Canada (SPARCC) scoring system. CONCLUSION: DWI is informative for diagnosis of AS and nr-axSpA, and has moderate utility in assessment of disease activity or treatment response, with performance similar to that of the SPARCC MRI score.
OBJECTIVE: We tested the discriminatory capacity of diffusion-weighted magnetic resonance imaging (DWI) and its potential as an objective measure of treatment response to tumor necrosis factor inhibition in ankylosing spondylitis (AS). METHODS: Three cohorts were studied prospectively: (1) 18 AS patients with Bath Ankylosing Spondylitis Disease Activity Index > 4, and erythrocyte sedimentation rate > 25 and/or C-reactive protein > 10 meeting the modified New York criteria for AS; (2) 20 cases of nonradiographic axial spondyloarthritis (nr-axSpA) as defined by the Assessment of Spondyloarthritis international Society (ASAS) criteria; and (3) 20 non-AS patients with chronic low back pain, aged between 18 and 45 years, who did not meet the imaging arm of the ASAS criteria for axSpA. Group 1 patients were studied prior to and following adalimumab treatment. Patients were assessed by DWI and conventional magnetic resonance imaging (MRI), and standard nonimaging measures. RESULTS: At baseline, in contrast to standard nonimaging measures, DWI apparent diffusion coefficient (ADC) values showed good discriminatory performance [area under the curve (AUC) > 80% for Group 1 or 2 compared with Group 3]. DWI ADC values were significantly lower posttreatment (0.45 ± 0.433 before, 0.154 ± 0.23 after, p = 0.0017), but had modest discriminating capacity comparing pre- and posttreatment measures (AUC = 68%). This performance was similar to the manual Spondyloarthritis Research Consortium of Canada (SPARCC) scoring system. CONCLUSION: DWI is informative for diagnosis of AS and nr-axSpA, and has moderate utility in assessment of disease activity or treatment response, with performance similar to that of the SPARCC MRI score.
Authors: Jin Xian Huang; Ho Yin Chung; Eva Tze Fung Chui; Kam Ho Lee; Shirley Chiu Wai Chan; Helen Hoi Lun Tsang; Alexandra Hoi Yan Ng Journal: Rheumatol Adv Pract Date: 2019-12-18
Authors: Jakob M Møller; Mikkel Østergaard; Henrik S Thomsen; Inge J Sørensen; Ole R Madsen; Susanne J Pedersen Journal: Acta Radiol Open Date: 2020-03-13