1. A method for registration of ultrasound device in three dimensions to a C-arm scan comprising: acquiring a baseline volume; acquiring a plurality of images in which the ultrasound device is captured; locating the ultrasound device within the images; registering the location of the ultrasound device to the baseline volume; acquiring an ultrasound volume from the ultrasound device; registering the ultrasound volume to the baseline volume; and performing fusion imaging to display a view of the ultrasound device in the baseline volume, wherein the method is executed by a processor.