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Table 3 Imaging indicators between refractory and non-refractory group

From: Factors associated with refractory autoimmune necrotizing myopathy with anti-signal recognition particle antibodies

tMRI

Average change rates

Non-refractory group (16)

Refractory group (9)

P

Fatty infiltration

3 months

2.64

5.55

0.022*

6 months

1.37

1.60

0.118

12 months

0.77

0.59

0.305

18 months

0.43

0.38

0.534

24 months

0.14

0.17

0.176

Edema

3 months

3.69

2.17

0.240

6 months

2.80

2.56

0.206

12 months

1.18

1.17

0.627

18 months

0.99

0.70

0.431

24 months

0.64

0.60

0.386

  1. tMRI Thigh MRI
  2. *P<0.05