Ultrasound image enhancement in an ultrasound system

An ultrasound system, comprising:

• an ultrasound data acquisition unit configured to transmit ultrasound beams to a target object along predetermined plural scan line groups of scan lines in an alternative and sequential manner by applying a pressure to the target object, receive ultrasound echoes reflected from the target object, and provide a plurality of ultrasound frame data, said predetermined plural scan line groups being respectively associated with predetermined steering angles and each of the plurality of ultrasound frame data being produced in response to the transmission of the ultrasound beam along the respective scan line groups;
• and
• a processor configured to compute elasticity information between neighboring frame data obtained at an identical steering angle based on the pressure based on the ultrasound frame data, form elastic images based on the elasticity information sequentially and compound mth to (m+i)th elastic images in an interleaving way to form compound images, wherein m is increased by 1 in forming a new compound image, and wherein m and i are positive integers.