Table 2 Individual measurement parameters for both conventional presurgical CT images and intraoperative O-arm scans
From: The use of an O-arm in endonasal endoscopic operations of the skull base
| Reference point | Neuronavigation–accuracy error (mm) | O-arm–accuracy error (mm) | Absorbed dose by O-arm (mGy cm) | Total surgical time (min) | |
|---|---|---|---|---|---|
| Patient 1 | Vomer | 6.6 | 0.0 | 220.03 | 125 |
| Patient 2 | Intrasphenoidal septum | 2.8 | 0.0 | 220.03 | 100 |
| Intrasphenoidal septum | 2.2 | 0.0 | |||
| Patient 3 | Intrasphenoidal septum | 1.5 | 0.0 | 220.03 | 105 |
| Patient 4 | Intrasphenoidal septum | 3.6 | 0.0 | 220.03 | 97 |
| Vomer | 3.6 | 0.0 | |||
| Patient 5 | Intrasphenoidal septum | 0.0 | 0.0 | 220.03 | 66 |
| Intrasphenoidal septum | 0.0 | 0.0 | |||
| Patient 6 | Intrasphenoidal septum | 1.5 | 0.0 | 220.03 | 130 |
| Vomer | 1.9 | 0.0 |