Table 2:
Mean and 95% confidence intervals for uptake parameters
| Group | Count | SUVmean mean (95% CI) | SUVmax mean (95% CI) | Ki mean (95% CI) | K1 mean (95% CI) | Extraction fraction mean (95% CI) | |
|---|---|---|---|---|---|---|---|
| Healthy | 196 | 0.54 (0.50, 0.58) |
1.55 (1.39, 1.71) |
0.0084 (0.0078, 0.0090) |
0.0098 (0.0091, 0.0104) |
0.875 (0.858, 0.893) |
|
|
OA Normal-appearing regions |
144 | 0.92 (0.84, 1.01) |
3.21 (2.73, 3.68) |
0.0098 (0.0090, 0.0106) |
0.0177 (0.0154, 0.0199) |
0.690 (0.652, 0.728) |
|
|
OA All regions |
360 | 1.48 (1.34, 1.62) |
6.48 (5.85, 7.12) |
0.0143 (0.0133, 0.0153) |
0.0261 (0.0240, 0.0282) |
0.650 (0.626, 0.674) |
|
| Bone Marrow Lesions | 1 | 39 | 1.88 (1.43, 2.34) |
11.50 (9.05, 13.94) |
0.0193 (0.0152, 0.0234) |
0.0294 (0.0234, 0.0353) |
0.705 (0.629, 0.781) |
| 2 | 20 | 3.56 (2.18, 4.94) |
17.91 (14.37, 21.45) |
0.0290 (0.0214, 0.0366) |
0.0463 (0.0336, 0.0589) |
0.669 (0.574, 0.765) |
|
| 3 | 1 | 3.43 | 25.84 | 0.0332 | 0.0468 | 0.708 | |
| Osteophytes | 1 | 108 | 1.67 (1.40. 1.94) |
7.56 (6.41, 8.70) |
0.0162 (0.0144, 0.0180) |
0.0292 (0.0258, 0.0327) |
0.624 (0.583, 0.665) |
| 2 | 51 | 1.71 (1.40, 2.02) |
9.22 (7.22, 11.22) |
0.0167 (0.0139, 0.0196) |
0.0317 (0.0263, 0.0371) |
0.608 (0.536, 0.679) |
|
| 3 | 29 | 2.96 (2.07, 3.85) |
12.05 (9.25, 14.86) |
0.0236 (0.0176, 0.0295) |
0.0488 (0.0369, 0.0607) |
0.528 (0.453, 0.602) |
|
| Cartilage Lesions | 1 | 27 | 1.57 (1.27, 1.87) |
8.61 (6.14, 11.09) |
0.0153 (0.0126, 0.0180) |
0.0284 (0.0215, 0.0353) |
0.610 (0.533, 0.687) |
| 2 | 66 | 2.42 (1.91, 2.93) |
11.57 (9.76, 13.37) |
0.0221 (0.0188, 0.0254) |
0.0396 (0.0332, 0.0495) |
0.645 (0.588, 0.703) |
|
| 3 | 29 | 2.24 (1.65, 2.83) |
10.46 (7.88, 13.04) |
0.0183 (0.0136, 0.0230) |
0.0382 (0.0310, 0.0453) |
0.506 (0.412, 0.599) |
|
CI: confidence interval
OA: Osteoarthritis group
Normal-appearing regions: all MOAKS scores = 0