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 Indian J Med Microbiol  
 

Figure 9 (A-E): Findings of chronic sacroiliitis on MRI. (A) Coronal oblique T1W MR image without fat suppression in a 33 year old male with ankylosing spondylitis shows fatty deposition on both iliac (white arrows) and sacral surfaces (black arrows). (B) Corresponding coronal oblique STIR MR image shows suppression of fat signal (white arrows) without any edema. (C) Axial T1W MR image shows multiple subchondral erosions (black arrow). (D) T1W oblique coronal image without fat suppression in another patient shows subchondral sclerosis (thin white arrow), erosion (black arrow), and fatty deposition around the sacroiliac joint (short white arrow). (E) Coronal oblique T1W images without fat supression through sacroiliac joints show complete joint ankylosis (white arrows) in a 60 year old male with ankylosing spondylitis

Figure 9 (A-E): Findings of chronic sacroiliitis on MRI. (A) Coronal oblique T1W MR image without fat suppression in a 33 year old male with ankylosing spondylitis shows fatty deposition on both iliac (white arrows) and sacral surfaces (black arrows). (B) Corresponding coronal oblique STIR MR image shows suppression of fat signal (white arrows) without any edema. (C) Axial T1W MR image shows multiple subchondral erosions (black arrow). (D) T1W oblique coronal image without fat suppression in another patient shows subchondral sclerosis (thin white arrow), erosion (black arrow), and fatty deposition around the sacroiliac joint (short white arrow). (E) Coronal oblique T1W images without fat supression through sacroiliac joints show complete joint ankylosis (white arrows) in a 60 year old male with ankylosing spondylitis