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Abstract #3193

High Resolution Imaging of the Sacroiliac Joints in Ankylosing Spondylitis Patients at 7 Tesla

Maartje E. Vossen1, Wouter M. Teeuwisse1, Monique Reijnierse1, Desiree M. van Der Heijde2, Nadine B. Smith1, Andrew G. Webb1

1Radiology, Leiden University Medical Center, Leiden, Netherlands; 2Rheumatology, Leiden University Medical Center

High spatial resolution images of the SI joints have been acquired at 7 Tesla in both volunteers and patients sufferenting from sacroilitis. Very small cortical erosions can be visualized with an in-plane resolution of 0.5 x .5 mm. Water/fat imaging using a three-point Dixon method was shown to differentiate between fatty infiltration and edema in a second patient.