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[Magnetic resonance imaging of skeletal muscle in patients with Duchenne muscular dystrophy--serial axial and sagittal section studies]. 1991
Magnetic resonance imaging of skeletal muscles in thirteen patients with Duchenne muscular dystrophy was performed to estimate pathological changes. Serial axial and sagittal sections of the right lower extremity were recorded. In the early stage, the T1 values of gastrocnemius and soleus muscles were slightly lower than the control values, and in the late stage, the values were much lower in all muscles examined. In sagittal sections, the gastrocnemius muscles in the early stage showed a high density area at the distal region adjacent to soleus muscle, and the soleus muscle showed a high density area adjacent to the gestrocnemius muscle. In serial axial sections, high density areas of the anterior and posterior tibialis muscles appeared first at their proximal and peripheral regions. It was concluded that the sequence of appearance of pathological changes was different not only among individual muscles but also among various regions of each muscle; the high density changes appeared first at myotendon junctions.
