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Table 2 Comparison of PET-CT outcome with MRI and conventional radiography of subpopulation scanned with [18F]FDG, [11C](R)PK11195, and [18F]fluoride

From: Bone formation rather than inflammation reflects Ankylosing Spondylitis activity on PET-CT: a pilot study

Patient

Anatomic location

X-ray

PET-CT a

MRI

   

Score b

Level

Lesion

[18F]FDG

[18F]Fluoride

T1+Gd

STIR

  

Cervical

0

2 p

FA

-

  

-

-

     

3 p

FA

        
           

7 p

7 p

7 p

     

8 a

SC

8a

8 a

8 a

8 a

     

9 a

SC

  

9 a

9 a

9 a

1

Spine

Thoracic

0

10 a

SC

  

10 a

10 a

10 a

     

11 a

SC

  

11 a

11 a

11 a

     

12 a

SC

        
  

Lumbar

0

4 p

FA

-

4 p

-

-

     

5 p

FA

  

5 p

    
 

Sacroiliac joints

2

2

R

L

SC

SC

        
  

Cervical

0

-

-

-

-

6 a

6 a

             

7 a

7 a

           

1 p

1 p

1 p

           

6 p

    
           

8 p

    
  

Thoracic

0

9 a/p

SQ

  

9 p

    
 

Spine

   

10 a/p

SQ

10a

10 p

    

2

    

11 a/p

SQ

11a

11 p

    
     

12 a/p

SQ

        
         

-

  

2 a

2 a

           

3 a

    
  

Lumbar

2

4 a

SQ

        
           

5 a

    
 

Sacroiliac joints

4

3

R

L

Ank

SC

-

-

R

L

Ank

sfmi

Ank

sfmi

Ank

sfmi

Ank

sfmi

  1. Levels on positron emission tomography-computed tomography (PET-CT) and magnetic resonance imaging (MRI) scans are hotspots with increased signal. a[11C](R)PK11195 is not presented, because all scans were negative. bX-ray according to modified Stoke Ankylosing Spondylitis Spinal Score (m-SASSS) (0 to 72). a, anterior; Ank, ankylosis; [11C](R)PK11195, PK11195 [(R)-1-(2-chlorophenyl)-N-methyl-N(1-methyl-propyl)-3-soquinoline carboxamide]; FA, facet arthrosis; L, left; p, posterior; R, right; SC, sclerosis; sfmi, subchondral fatty marrow infiltration; SQ, squaring; STIR, short-tau inversion recovery; T1+Gd, gadolinium contrast uptake on T1 images.
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Arthritis Research & Therapy

ISSN: 1478-6362

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