Minimally invasive image guided interventions are an attractive option for localized therapy delivery and diagnostic biopsy. We have developed a method for CT guided needle placement, based upon the Brown-Roberts-Wells frame, which requires no immobilization or fiducial implantation. A localization module, placed on a needle holding robotic end effector, allows for localization of the effector in the image space using a single CT image. In a theoretical analysis, we show that this registration method has attractive sensitivity and error attenuation properties. Experimentally, the average error in needle tip location over 63 trials
Robert C. Susil, James H. Anderson, Russell H. Tay