A multireader reliability study comparing conventional high-field magnetic resonance imaging with extremity low-field MRI in rheumatoid arthritis.
The use of extremity low-field magnetic resonance imaging (E-MRI) is increasing, but relatively few data exist on its reproducibility and accuracy in comparison with high-field MRI, especially for multiple readers. The aim of this multireader exercise of rheumatoid arthritis wrist and metacarpophalangeal joints was to assess the intermachine (high vs low-field) agreement and to assess the interreader agreement on high and low-field images. Study findings suggested that E-MRI performs similarly to conventional high-field MRI regarding assessment of bone erosions. However, for synovitis and bone edema, considerable intermachine and interreader variability was found. Further studies are needed before recommendations on multireader E-MRI assessment of these pathologies can be given.
Bird
Paul
P
Department of Rheumatology, St. George Hospital, University of New South Wales, Sydney, Australia. p.bird@unsw.edu.au
Ejbjerg
Bo
B
Lassere
Marissa
M
Østergaard
Mikkel
M
McQueen
Fiona
F
Peterfy
Charles
C
Haavardsholm
Espen
E
O'Connor
Philip
P
Genant
Harry
H
Edmonds
John
J
Emery
Paul
P
Conaghan
Philip G
PG
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D008662:Metacarpophalangeal Joint / Q000473:pathology*; D008875:Middle Aged; D015588:Observer Variation; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013585:Synovitis / Q000175:diagnosis / Q000473:pathology*; D014955:Wrist Joint / Q000473:pathology*