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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