Table 2 MRI scoring methods
Disease activity assessed | Methodology |
|---|---|
Spondyloarthritis Research Consortium of Canada (SPARCC) | |
Inflammation in SI joints [26] | Each SI joint divided into 4 quadrants and scored for bone marrow edema in each of 6 consecutive semicoronal slices, with additional points for signal intensity and depth |
Inflammation in spine [28] | Each discovertebral unit divided into 4 quadrants and scored in each of 3 slices for presence of bone marrow edema in each quadrant, with additional points for signal intensity and depth |
Total score: 0–414 | |
Canada-Denmark (CAN-DEN) | |
Inflammation and damage in spine [29] | The system is a detailed anatomy-based evaluation of inflammatory and structural lesions in vertebral bodies and posterior elements of the spine. Features assessed: inflammation (0–614), fat (0–510), bone erosion (0–208), new bone formation (0–460) |
Outcome Measures in Rheumatology (OMERACT) Psoriatic Arthritis MRI Scoring System (PsAMRIS)a | |
Inflammation and destructive changes in peripheral joints [30] | Features assessed (score range): • Synovitis (hands: 0–42; feet: 0–18) • Flexor tenosynovitis (hands: 0–42; feet: 0–18) • Periarticular inflammation (hands: 0–28; feet: 0–12) • Bone marrow edema (hands: 0–84; feet: 0–36) • Bone erosion (hands: 0–280; feet: 0–120) • Bone proliferation (hands: 0–14; feet: 0–6) |