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.