Ankylosing spondylitis MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The main MRI finding for a patient with ankylosing spondylitis is synovial enhancement. MRI is superior to CT in the detection of cartilage, bone erosions, and subchondral bone changes. An increased T2 signal correlates with edema or vascularized fibrous tissue.

MRI

May have a role in early diagnosis of sacroiliitis
Synovial enhancement on MR correlates with disease activity measured by inflammatory mediators
Superior to CT in detection of cartilage, bone erosions, and subchondral bone changes
Increased T2 signal correlates with edema or vascularized fibrous tissue
Useful in following treatment results in patients with active ankylosing spondylitis

(Images courtesy of RadsWiki)