**O-ARM Stereotactic Imaging in Deep Brain Stimulation for Parkinson's Disease Study** Deep Brain Stimulation (DBS) is a procedure for Parkinson's Disease (PD) that involves placing electrodes in the brain, particularly in the *subthalamic nucleus* (a small area involved in movement). This study aims to compare two imaging techniques used to guide this procedure. Normally, patients are moved to a different department for imaging (like MRI or CT scans) before returning to the operating room. The O-ARM technology allows this imaging to happen directly in the operating room, potentially making the process faster and more comfortable. **Key Points:** - **Duration**: The study involves a surgical procedure, with follow-up visits. - **Risks**: Standard surgical risks apply; discuss with your doctor. - **Benefits**: Faster procedure with potentially more comfort and safety. You can join if you have Parkinson's with motor fluctuations, have DBS approved for you, and agree to participate. You can't join if you have conditions like significant cognitive issues, are pregnant, or can't stop certain medications.