Conclusion: We conclude that the AIRO® system is a safe, easy-to-use, and sufficiently accurate iCT for CT frame-based stereotactic biopsy planning that results in a considerable reduction of surgery time. Net surgery time was reduced by 38 min, on average. A conclusive histological result was obtained in 46 of the 50 cases included. The MRI/iCT image fusion was feasible in all of the studies. Results: The frame-based stereotactic iCT was easy to implement and successfully accomplished in all patients. After fusion of the preoperative MRI and AIRO® iCT, the stereotactic system was built based on the iCT, and trajectories were calculated accordingly. The imaging data were transferred to a conventional stereotaxy working unit. Methods: A conventional stereotactic frame was mounted to the AIRO® carbon table via carbon adapter. Here, we report the first 50 patients who underwent stereotactic biopsies using the mobile AIRO® intraoperative CT (iCT) scanner. Because spinal procedures are increasingly common, such devices are seen more and more often in everyday radiologic practice. The intraoperative transport of the anesthetized and intubated patient to and from the CT unit can be time-consuming and cumbersome. Stabilization and fusion of the lumbar spine may be performed by using various anterior and posterior surgical techniques and a wide range of devices, including screws, spinal wires, artificial ligaments, vertebral cages, and artificial disks. It generally follows a workflow including preoperative MRI and intraoperative frame-based CT. Background: In frame-based stereotactic surgery, intraoperative imaging is crucial.
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