1. A method for setting parameters for image analysis of ultrasound images, the method comprising: obtaining ultrasound data of an object; generating an image of the object; identifying a region of interest in the image; determining a plurality of spatially varying parameters for image analysis of the region of interest using prior information for one or more objects of interest, including prior location information for the one or more objects of interest, the plurality of spatially varying parameters determined for a plurality of sections of the region of interest and different for at least some of the plurality of sections; and using the plurality of spatially varying parameters for performing image analysis of the region of interest in the image to determine the location of the one or more objects of interest.