A method and apparatus for three-dimensional imaging and treatment of a
patient's body. The method and apparatus utilize a system for developing
a therapy plan for treatment of an organ of the patient, a device for
generating ultrasound image data from a treatment region and a device for
providing a translucent volume image of a portion of a patient's body and
a separate translucent image of the patient organ and a three dimensional
viewing device to superimpose a translucent article image to enable
viewing of the article image simultaneously with the patient organ and a
portion of the patient's body.