That is plenty and a challenge for many, but the other imaging modalities used are either standard fare in many centers (x-ray imaging, endoscopy) or do not need to be in adjacent rooms (PET scanning and angiography (can be done in the primary Or).
As we all know surgery of chordomas, especially of recurrent chordomas, is challenging and the authors should be congratulated for their thoroughly surgical planning and approaches, using elaborate pre- and intraoperative imaging, which is well described throughout the manuscript.