In this issue you will find the following; Introduction aboout sound and ultrasound, sound wave properties, types of wave, sound equation, peizoelectricity, interaction of ultrasound with medium, attenuation of ultrasound beam, ultrasound velocity, Ultrasound modes, A-mode, B-mode, M-mode, Image resolution, Ultrasound beam &Ultrasound image formation, ultrasound image artifacts, Ultrasound biological e