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Feasibility study of intraoperative cone-beam CT navigation for benign bone tumor surgery.

BACKGROUND: Intraoperative cone-beam CT (CBCT) offers the advantage of navigation on the current anatomical situation and the possibility to take a control scan. We assessed the feasibility of using intraoperative CBCT for navigated intralesional curettage.

METHODS: Nine benign bone tumor patients were studied. Feasibility was assessed by describing the workflow and indications for navigation, scoring CBCT image quality and registration accuracy, and measuring scan and navigation set-up times. Short-term follow-up was described.

RESULTS: CBCT navigation was successful in all patients. Median tumor visibility, tumor delineation and vital structure visibility scores were good. Median registration accuracy score was very good. Median scan and verification times were 5 and 3 minutes. One patient had a tumor recurrence after 6 months.

CONCLUSIONS: Intraoperative CBCT navigation is feasible and safe. Indications for use of navigation in clinical practice are closeness to vital structures, complexly shaped tumors or bone, minimal invasive surgery and repeated surgery.

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