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A novel method of motion compensated power Doppler imaging (MC-PDI) has been investigated and found to improve the spatial and contrast resolution of ultrasonic power Doppler imaging (PDI), which is widely used to visualize blood flow velocity. The tissue motion in neighboring frames sequentially obtained is measured with a block matching technique, and then several power Doppler (PD) images are averaged compensating for deviation in the tissue. Image quality with and without motion compensation (MC) was quantitatively evaluated using a Doppler phantom. The feasibility of MC-PDI was demonstrated using a tumor in rabbit liver. The resulting images indicated that slight liver motion could be effectively reduced and the blood vessels could be clearly imaged without blurring in MC-PDI.
Ultrasonics Symposium (IUS), 2010 IEEE
Date of Conference: 11-14 Oct. 2010