Abstract: An ultrasonic image scanning system for scanning an organic object includes a beam former that provides a phase velocity adjustment function for producing an ultrasonic image with a programmable phase velocity. The ultrasonic image scanning system further includes a beam profile analysis function for calculating an optimal phase velocity with a user controller to adjust the phase velocity until a scan image of best image quality is achieved. Alternately, the system may provide an automatic phase velocity-scanning controller for automatically scanning through a range of phase velocities and selecting a best phase velocity generating a scanning image of a best quality. The system further includes a region of interest (ROI) controller for a user to select a region for scanning with a specific focal area for optimizing the phase velocity. The system may further provide a maximum gradient analyzer for selecting an image of a best quality in optimizing the phase velocity.