About the Authors

Asgeir S. Jakola

asgeir.s.jakola@ntnu.no

Affiliations Department of Neurosurgery, St.Olavs University Hospital, Trondheim, Norway, MI Lab, Norwegian University of Science and Technology, Trondheim, Norway, Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway

Geirmund Unsgård

Affiliations Department of Neurosurgery, St.Olavs University Hospital, Trondheim, Norway, Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway, National Centre for 3D Ultrasound in Surgery, Trondheim, Norway

Kristin S. Myrmel

Affiliation Department of Pathology, University Hospital of Northern Norway, Tromsø, Norway

Roar Kloster

Affiliation Department of Ophthalmology and Neurosurgery, University Hospital of Northern Norway, Tromsø, Norway

Sverre H. Torp

Affiliation Department of Laboratory Medicine, Children’s and Women’s Health, Norwegian University of Science and Technology, Trondheim, Norway

Sigurd Lindal

Affiliation Department of Pathology, University Hospital of Northern Norway, Tromsø, Norway

Ole Solheim

Affiliations Department of Neurosurgery, St.Olavs University Hospital, Trondheim, Norway, MI Lab, Norwegian University of Science and Technology, Trondheim, Norway, National Centre for 3D Ultrasound in Surgery, Trondheim, Norway

Competing Interests

The authors have read the journal's policy and have the following conflict: Geirmund Unsgård has approximately 0.3% of the stocks in SonoWand®, a company making neuronavigation system with integrated 3D-ultrasonography used in many of the resections in this study. None of the other authors have any conflict of interests to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: ASJ GU RK OS. Analyzed the data: ASJ KSM SHT SL OS. Contributed reagents/materials/analysis tools: GU RK KSM SHT SL. Wrote the paper: ASJ GU KSM SHT RK SL OS.