Standardization of Quantitative Muscle Ultrasonographic Parameters Among Egyptian Population

1-standardization of semi quantitative muscle ultrasonographic parameters ( muscle thickness (MT) and echo intensity (EI) ) in healthy adults and to obtain a set of normal values of all accessible muscle in both upper and lower limbs. 2.standardizaition of quantitative muscle ultrasonographic parameters (Gray scale level (GSL), Calibrated muscle backscatter values (cMBs), Optical Density (OD), 2D Textu1) in healthy adults and to obtain a set of normal values of all accessible muscle in both upper and lower limbs.