A three-dimensional stereotactic device for computed tomography-guided invasive diagnostic and therapeutic procedures.

RATIONALE AND OBJECTIVES: A three-dimensional stereotactic technique is presented as an improvement in precision needle placement for percutaneous diagnostic and therapeutic procedures. METHODS: This method uses transaxial computed tomography (CT) imaging for the selection of the optimal target path, and it employs a three-dimensional stereotactic device designed to match precisely the CT parameters in a three-dimensional space. RESULTS: In selected cases, we reached targets as small as 1 to 2 cm while avoiding vital structures. CONCLUSIONS: In our hands, in selected cases, this has been a simple, safe, and accurate technique for improvement of percutaneous diagnostic and therapeutic procedures under CT guidance.