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Table 3 Comparison of MRI findings between brucella spondylitis and tuberculous spondylitis

From: Differentiating brucella spondylitis from tuberculous spondylitis by the conventional MRI and MR T2 mapping: a prospective study

MRI findings

BS [n (%)]

TS [n (%)]

χ2 value

p value

Site of involvement

  

11.106

0.025

 Cervical spine

0

1 (3.70%)

  

 Thoracic spine

2 (14.18%)

6 (22.22%)

  

 Thoracolumbar spine

2 (14.18%)

9 (33.33%)

  

 Lumbar spine

18 (69.23%)

9 (33.33%)

  

 Lumbosacral spine

4 (15.38%)

2 (7.40%)

  

Number of affected vertebra

  

0.670

0.715

 1

1 (3.85%)

1 (3.70%)

  

 2

23 (88.46%)

22 (81.48%)

  

 ≥ 3

2 (7.69%)

4 (14.81%)

  

MRI signal

 Hypointense signal on T1WI

23 (88.46%)

26 (96.29%)

1.165

0.280

 Hyperintense signal on T2WI

14 (53.85%)

10 (37.04%)

1.510

0.219

 Hyperintense signal on STIR

18 (69.23%)

21 (77.78%)

0.498

0.480

Vertebral change

 Vertebral destruction

  

20.974

< 0.001

  Mild (≤  1/3)

23 (88.46%)

8 (29.63%)

  

  Severe (>  1/3)

2 (7.41%)

19 (70.37%)

  

 Vertebral wedge

  

0.229

0.632

  ≤  1/2

7 (26.92%)

20 (74.07%)

  

  >  1/2

1 (3.85%)

5 (18.52%)

  

 Posterior convex deformity

1 (3.85%)

6 (22.22%)

3.902

0.048

 Vertebral appendage lesion

3 (11.54%)

5 (18.52%)

0.504

0.478

 Dead bone

0 (0.00%)

13 (48.15%)

16.587

< 0.001

 Vertebral hyperplasia

25 (96.15%)

8 (29.63%)

24.948

< 0.001

Intervertebral space

  

10.540

0.005

 Normal

11 (42.31%)

2 (7.41%)

  

 Narrow

15 (57.69%)

22 (81.48%)

  

 Disappear

0 (0.00%)

3 (11.11%)

  

Abscess

  

22.945

 < 0.001

 Paravertebral abscess

17 (65.38%)

6 (22.22%)

  

 Epidural abscess

9 (34.62%)

8 (29.62%)

  

 Psoas abscess

0 (0.00%)

18 (66.67%)

  

 Abscess scope

  

27.451

< 0.001

  Beyond the vertebra lesion

1 (5.88%)

17 (94.44%)

  

  In the vertebra lesion

16 (94.12%)

1 (5.56%)

  
  1. BS brucella spondylitis; TS tuberculous spondylitis; STIR short-tau inversion recovery