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Table 1 Characteristics of the population

From: Performance of 18F-sodium fluoride positron emission tomography with computed tomography to assess inflammatory and structural sacroiliitis on magnetic resonance imaging and computed tomography, respectively, in axial spondyloarthritis

 

N (%)

Median

Mean [SD]

Clinical characteristics

 Sex: male

10 (43.5)

  

 Age (years)

  

44.2 [± 9.78]

 Symptom duration (years)

  

7.7 [± 8.5]

 Axial involvement

12(52.2)

  

 Tobacco use

16 (70)

  

 Treatment

   

 NSAIDs

18 (78.3%)

  

 TNF blockers*

4 (17.4%)

  

Biological results

 Sedimentation rate (mm at the first hour)

 

14

23.3 [± 22.6]

 CRP (mg/mL)

 

8

14.4 [± 20.6]

ASAS criteria

 HLA-B27

7 (30.4)

  

 Arthritis

9 (39.1)

  

 Enthesitis

8 (38.8)

  

 Uveitis

2 (8.7)

  

 Dactylitis

2 (8.7)

  

 Psoriasis

6 (26.1)

  

 Inflammatory bowel disease

3 (13.0)

  

 Familial history

4 (17.4)

  

 Inflammatory back pain

22 (95.7)

  

 Good response to NSAIDs

11 (47.8)

  

 Biological inflammation (CRP > 5 mg/L)

12 (52.2)

  

Clinical evaluation scores**

 BASFI

 

61.5

59.3 [± 23.0]

 BASDAI

 

5.88

5.45 [± 2.57]

 BASMI

 

3

2.9 [± 2.0]

 ASDAS

 

3

3.3 [± 0.9]

  1. *Anti-TNF: stopped 3 months before the MRI
  2. **BASDAI Bath Ankylosing Spondylitis Disease Activity Index, BASFI Bath Ankylosing Spondylitis Activity Functional Index, BASMI Bath Ankylosing Metrology Index, ASDAS Ankylosing Spondylitis Disease Activity Score