title: Attenuation of ultrasound in post rigor bovine skeletal muscle.
abstract: A pulse transmission method for measuring the attenuation of 1-7 MHz ultrasound in bovine skeletal muscle is described. Measurements of the attenuation coefficient at -20, 0, 20 and 40 degrees C conformed to the relation alpha = Afn, where A and n are temperature-dependent coefficients and f is the frequency. alpha/f varied slowly with frequency, and at 4 MHz and 20 degrees C mean values were 1.3 dB cm-1 MHz-1 along the fibres and 0.55 dB cm-1 MHz-1 across the fibres. These data are lower than most previous measurements of skeletal muscle, but comparable with recent measurements of canine heart muscle.
mesh_terms: D000818:Animals; D002368:Castor Oil; D002417:Cattle; D004285:Dogs; D005990:Glycerol; D006321:Heart / Q000033:anatomy & histology; D008433:Mathematics; D009132:Muscles / Q000033:anatomy & histology*; D013696:Temperature; D014465:Ultrasonics / Q000379:methods
chemical_list: D002368:Castor Oil; D005990:Glycerol