Table 3.
Relaxometric Assessment of T1 Values at Standardized Locations in Femur and Tibia of Anorexic and Control Subjects
| T1, msa | |||||
|---|---|---|---|---|---|
| Location | All (36) | AN (18) | Control (18) | AN-control, msb | p, AN vs contro |
| Distal femur | |||||
| Epiphysis, lateral | 444 ± 57 | 460 ± 63 | 429 ± 48 | +30.9 ± 21.9 | .17 |
| Metaphysis, medial | 564 ± 107 | 547 ± 99 | 582 ± 114 | −35.1 ± 21.9 | .12 |
| p, metaphysis versus epiphysis | <.0001 | .02 | |||
| Proximal tibia | |||||
| Epiphysis, lateral | 436 ± 54 | 441 ± 39 | 430 ± 67 | +11.2 ± 21.2 | .60 |
| Metaphysis, central | 507 ± 82 | 498 ± 87 | 515 ± 79 | −17.2 ± 21.2 | .42 |
| p, metaphysis versus epiphysis | <.0001 | .28 | |||
a
Mean ± standard deviation. Low values of T1 are characteristic of yellow marrow, high values characteristic of red marrow. Two anorexic images and two control images were of insufficient quality to assess
b
Difference between anorexic and control means ± standard error estimated by mixed-model analysis of covariance adjusted for age, location, and intrasubject correlation.