Fig. 1From: Factors associated with refractory autoimmune necrotizing myopathy with anti-signal recognition particle antibodiesThigh MRI of refractory ANM-SRP. Thigh MRI showed mild fatty infiltration (a; T1-weighted MRI) and focal edema (b; Short T1 inversion recovery sequences) in thigh muscle before treatment, the fatty infiltration aggravated (c) and muscle edema alleviated (d) after immunotherapyBack to article page