A COMPACT LASER-BEAM GUIDANCE-SYSTEM FOR INTERVENTIONAL CT

Objective: We propose a simple, compact, and accurate light guidance s ystem for interventional CT. Materials and Methods: The system using i ntersecting laser beams is mounted on the CT gantry and ensures precis e needle guidance even when the gantry is tilted. The device does not require additional software/hardware. Results: Phantom simulations and clinical experiments have demonstrated an accuracy of +/-1 degrees an d +/-1 mm. Conclusion: The laser guidance system for CT makes the inte rvention safer, faster, and more accurate.