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Table 2 Site and volume (mm3) of BML according to whether visualised by T2 fat-saturated images only or both T1- and T2-weighted images

From: Bone marrow lesions can be subtyped into groups with different clinical outcomes using two magnetic resonance imaging (MRI) sequences

  BML seen in T2 only BML seen in T1 and T2
  n T2 volume1 n T2 volume1 T1 volume1 % T2 volume2
Medial compartment
 Femoral 4 214 (66–543) 12 580 (54–3160) 56 (11–292) 17 % (4–51 %)
 Tibial 5 127 (54–328) 6 287(46–616) 163 (14–601) 63 % (5–148 %)
Lateral compartment
 Femoral 0 -- 8 1407(145–3957) 271 (12–1002) 12 % (6–47 %)
 Tibial 2 289 (106–472) 8 530 (89–1604) 107 (14–335) 22 % (9–40 %)
  1. BML bone marrow lesion
  2. 1Mean and range of BML volume identified by T2- or T1-weighted sequences, respectively
  3. 2BML volume measured from T1-weighted sequences compared to BML volume measured from T2-weighted sequences, expressed as a percentage