WBMRI and conventional MRI readability and frequency of lesions in patients with PsA and RA and HC.
| WBMRI Peripheral Joints | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Readability, % | No. Lesions, % of All Readable Areasa | |||||||||||||||||
| Synovitis | JBME | Soft Tissue Inflammation | EBME | |||||||||||||||
| Syn | STI | JBME | EBME | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | |||
| Shoulders and AC | 95 | 96 | 96 | 95 | 18 | 10 | 4 | 11 | 6 | 11 | 15 | 6 | 11 | 28 | 14 | 10 | ||
| Wrists and 1st CMC | 94 | – | 95 | – | 29 | 48 | 19 | 5 | 11 | 0 | – | – | – | – | – | – | ||
| Hands, MCP 2–5 | 96 | – | 96 | – | 5 | 21 | 1 | 3 | 6 | 0 | – | – | – | – | – | – | ||
| Hands, PIP 2–5 | 95 | – | 94 | – | 4 | 8 | 0 | 0 | 0 | 0 | – | – | – | – | – | – | ||
| Hands, DIP 2–5 | 95 | – | 93 | – | 13 | 8 | 0 | 1 | 0 | 0 | – | – | – | – | – | – | ||
| SC joint 1 | – | 94 | – | 94 | – | – | – | – | – | – | 2 | 0 | 0 | 0 | 0 | 2 | ||
| SC joint 2 | – | 93 | – | 93 | – | – | – | – | – | – | 0 | 0 | 0 | 4 | 0 | 0 | ||
| SC joints 3–7 | – | 6 | – | 5 | – | – | – | – | – | – | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Pelvis/hipb | 93 | 94 | 93 | 94 | 22 | 19 | 3 | 7 | 6 | 0 | 10 | 12 | 8 | 1 | 0 | 0 | ||
| Knees | 99 | 98 | 98 | 98 | 19 | 13 | 13 | 7 | 0 | 0 | 8 | 4 | 1 | 4 | 1 | 0 | ||
| Ankles and TMT | 97 | 95 | 96 | 95 | 17 | 14 | 15 | 11 | 11 | 2 | 20 | 20 | 11 | 19 | 7 | 1 | ||
| Feet, MTP 1–5 | 91 | – | 89 | – | 29 | 21 | 20 | 8 | 9 | 0 | – | – | – | – | – | – | ||
| Feet, PIP 1–5 | 83 | – | 83 | – | 1 | 1 | 1 | 3 | 2 | 1 | – | – | – | – | – | – | ||
| Feet, DIP 1–5 | 81 | – | 81 | – | 0 | 0 | 0 | 0 | 0 | 0 | – | – | – | – | – | – | ||
| WBMRI Spine | ||||||||||||||||||
| Readability, % | No. Lesions (% of All Readable Areas) | |||||||||||||||||
| Bone Marrow Edema | Fat | Erosion | New Bone Formation | |||||||||||||||
| BME | Fat | Ero | NBF | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | |||
| Cervical vertebral bodies | 100 | 100 | 100 | 100 | 0.7 | 0.9 | 0.2 | 0 | 2 | 0.8 | 0 | 0 | 0 | 0.4 | 0.6 | 0.8 | ||
| Cervical posterior parts | 100 | 100 | 100 | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Thoracic vertebral bodies | 100 | 100 | 100 | 100 | 2.1 | 0.8 | 0.4 | 0.7 | 0.7 | 0.5 | 0.8 | 0.7 | 0 | 0.3 | 0.7 | 0.2 | ||
| Thoracic posterior parts | 100 | 100 | 100 | 100 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Lumbar vertebral bodies | 100 | 100 | 100 | 100 | 1.5 | 0.7 | 0.3 | 0.5 | 0.8 | 0.4 | 1 | 0.5 | 0 | 0.7 | 1.2 | 0.4 | ||
| Lumbar posterior parts | 100 | 100 | 100 | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Conventional MRI | ||||||||||||||||||
| Readability, % | No. Lesions (% of Readable) | |||||||||||||||||
| Syn | TS | BME | Erosion | |||||||||||||||
| Syn | TS | BME | Ero | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | PsA | RA | HC | |||
| MCP 2–5 | 86 | 86 | 94 | 95 | 42 | 36 | 5 | 19 | 32 | 0 | 1 | 17 | 0 | 8 | 9 | 0 | ||
| PIP 2–5 | 82 | 83 | 91 | 93 | 32 | 25 | 2 | 10 | 18 | 1 | 0 | 11 | 0 | 1 | 1 | 0 | ||
| Wrist | 86 | 83 | 94 | 95 | 61 | 40 | 23 | 12 | 20 | 3 | 5 | 11 | 0 | 5 | 5 | 0 | ||
↵a No. lesions is the total number of lesions for all participants in each group; percentage is the number of observed lesions divided by the total number of possible lesions (i.e., the number of readable areas).
↵b Sacroiliac joints not included. AC: acromioclavicular joints; BME: bone marrow edema; CMC: carpometacarpal joint; DIP: distal interphalangeal joint; EBME: entheseal bone marrow edema; Ero: erosion; HC: healthy controls; JBME: joint bone marrow edema; MCP: metacarpophalangeal joint; MRI: magnetic resonance imaging; MTP: metatarsophalangeal joint; NBF: new bone formation; PIP: proximal interphalangeal joint; PsA: psoriatic arthritis; RA: rheumatoid arthritis; SC: sternocostal; STI: soft tissue inflammation; Syn: synovitis; TMT: tarsometatarsal joint; TS: tenosynovitis; WBMRI: whole-body MRI.