From: Stereoscopic X-ray imaging, cone beam CT, and couch positioning in stereotactic radiotherapy of intracranial tumors: preliminary results from a cross-modality pilot installation
Gantry in position
Scan
Registration
ExacTrac
15.7 ± 2.9
6,8 ± 0.3
4.1 ± 0.2
CBCT
25.1 ± 1.1
41.2 ± 0.2
8.2 ± 2.0