The pressure, p of the ultrasound wave at a particular point in the z direction is given by: p = pcu̟ where p is the tissue density, c is sound velocity, and u, is the particle velocity in z direction. (i) If the value of c depends on p and compressibility, x, define pressure, p in terms of compressibility, k. Based on the answer in Q2(b)(i), analyse the relation between rigidness of tissue and effect on pressure. (ii)

The pressure, p of the ultrasound wave at a particular point in the z direction is given by: p = pcu̟ where p is the tissue density, c is sound velocity, and u, is the particle velocity in z direction. (i) If the value of c depends on p and compressibility, x, define pressure, p in terms of compressibility, k. Based on the answer in Q2(b)(i), analyse the relation between rigidness of tissue and effect on pressure. (ii)