Surgivisio® and O-arm®O2 cone beam CT mobile systems for guidance of lumbar spine surgery: Comparison of patient radiation dose

Purpose To compare patient radiation doses in cone beam computed tomography (CBCT) of two mobile systems used for navigation-assisted mini-invasive orthopedic surgery: O-arm®O2 and Surgivisio®. Methods The study focused on imaging the spine. Thermoluminescent dosimeters were to measure organs effective (ED) during CBCT. An ionization-chamber a solid-state sensor incident air-kerma (Ki) at center CBCT field-of-view Ki 2D-imaging, respectively. PCXMC software was calculate ED 2D configurations. image quality evaluated with CATPHAN phantom. Results experimental estimate low-dose 3D-modes 2.41 0.35 mSv (Low Dose 3D-small-abdomen) Surgivisio® (3DSU-91 images), results consistent: 1.54 0.30 mSv. Organ 5 12 times lower skin comparable lateral 2D-imaging (0.5 mGy), but anteroposterior (0.3 versus 0.9 mGy). Both show poor low contrast resolution similar high spatial (7 line-pairs/cm). Conclusions This is first evaluate organ A significant difference observed between systems. demonstrates that spine delivers approximately five six less ED, compared O-arm®O2, dose 3D-modes. Doses 2D-mode preceding higher Surgivisio®, negligible under conditions tested.