Potential for reduction of radiation dose in the assessment of the lead orientation in directional deep brain stimulation electrodes

• DOI: 10.1016/j.ejrad.2025.111922
• Publication Date: 2025-01-11T00:36:15Z
• Authors: Till Schürmann; Thomas Stein; Horst Urbach; Bastian E.A. Sajonz; Fabian Bamberg; Volker A. Coenen; Alexander Rau; Peter C. Reinacher
• Keywords: Lead (geology)

Directional deep brain stimulation (dDBS) relies on electrodes steering the field in a specific direction. Post implantation, however, intended and real orientation of lead frequently deviates e.g. due to torque electrode. The is assessed by postoperative imaging such as C-arm cone-beam CT (CBCT) using 3D rotational fluoroscopy multi-slice (MSCT). objective determine effect different X-ray systems CBCT MSCT, scan acquisition parameters effective radiation doses. We retrospectively investigated dose area product (DAP) length (DLP) patients who underwent both MSCT after dDBS surgery. These metrics were then converted into established conversion coefficients. For CBCT, feasible optimization collimation was virtually assessed. Univariate analysis performed differences. Among 88 median 0.20 ± 0.07 mSv 2.11 0.33 (p < 0.001). view (FOV) can be collimated craniocaudal 33.6 % mediolaterally 60.8 %. This optimized implies an reduction 76 Comparison vs. revealed significant 90.3 0.001), whereas optimal 97.7 assessment orientation, had significantly lower doses compared MSCT. Optimized allows for further substantial reduction. Moreover, proposed approach applicable other neuroimaging procedures visualization treated intracranial aneurysm.