Ultrasound image processing method and ultrasound imaging apparatus thereof

An ultrasound image processing method comprising:

• transmitting at least one ultrasound signal to a region of interest (ROI) of an object and then receiving at least one ultrasound echo signal reflected from the ROI of the object;
• calculating a shear modulus which corresponds to at least one point in the ROI, based on the at least one received ultrasound echo signal;
• calculating a strain which corresponds to the at least one point, based on the at least one received ultrasound echo signal;
• and
• calculating a stress applied to the at least one point by using the calculated shear modulus and the calculated strain.