[The value of imaging procedures in myology].

Muscular imaging (sonography, computed tomography, magnetic resonance imaging) has proved to be worthwhile for myologic diagnostic purposes during the past few years. In 319 patients suffering from generalized neuromuscular diseases, muscle atrophies or hypertrophies and the degree and distribution of mesenchymal alterations in skeletal muscles were documented. The various imaging techniques were of assistance defining the optimal biopsy site, and the preparation of electro-myographic examinations. Real time sonography proved to be the method of choice for screening purposes and for documentation of fasciculations. Because of higher sensitivity and superior depiction of soft tissue pathology, magnetic resonance imaging supported the further diagnostic work-up in certain cases. Because of irradiating side effects, computed tomography was applied just for evaluation of muscle involvement in advanced stages of neuromuscular diseases in adults.