C. Liang, M. Li, and J. Gong, A new application of ultrasound-magnetic resonance multimodal fusion virtual navigation in glioma surgery, Ann Transl Med, vol.7, p.736, 2019.

O. Solheim, T. Selbekk, and A. S. Jakola, Ultrasound-guided operations in unselected high-grade gliomas--overall results, impact of image quality and patient selection, Acta Neurochir (Wien), vol.152, pp.1873-86, 2010.

S. A. Almenawer, J. H. Badhiwala, and W. Alhazzani, Biopsy versus partial versus gross total resection in older patients with high-grade glioma: a systematic review and metaanalysis, Neuro Oncol, vol.17, pp.868-81, 2015.

J. S. Smith, E. F. Chang, and K. R. Lamborn, Role of extent of resection in the long-term outcome of low-grade hemispheric gliomas, J Clin Oncol, vol.26, pp.1338-1383, 2008.

F. Prada, D. Bene, M. Mattei, and L. , Fusion imaging for intra-operative ultrasound-based navigation in neurosurgery, J Ultrasound, vol.17, pp.243-51, 2014.

A. Moiraghi, F. Prada, and A. Delaidelli, Navigated Intraoperative 2-Dimensional Ultrasound in High-Grade Glioma Surgery: Impact on Extent of Resection and Patient Outcome, Oper Neurosurg (Hagerstown), vol.18, pp.363-73, 2020.

A. ?te?o, V. Hollý, and P. Mendel, Navigated 3D-ultrasound versus conventional neuronavigation during awake resections of eloquent low-grade gliomas: a comparative study at a single institution, Acta Neurochir (Wien), vol.160, pp.331-373, 2018.

F. Prada, D. Bene, M. Mattei, and L. , Preoperative magnetic resonance and intraoperative ultrasound fusion imaging for real-time neuronavigation in brain tumor surgery, Ultraschall Med, vol.36, pp.174-86, 2015.

G. Unsgaard, O. M. Rygh, and T. Selbekk, Intra-operative 3D ultrasound in neurosurgery, Acta Neurochir (Wien), vol.148, pp.235-53, 2006.

B. Munkvold, A. S. Jakola, I. Reinertsen, L. M. Sagberg, G. Unsgård et al., The Diagnostic Properties of Intraoperative Ultrasound in Glioma Surgery and Factors Associated with Gross Total Tumor Resection, World Neurosurg, vol.115, pp.129-165, 2018.

F. Prada, A. Perin, and A. Martegani, Intraoperative contrast-enhanced ultrasound for brain tumor surgery, Neurosurgery, vol.74, pp.542-52, 2014.

F. Prada, V. Vitale, D. Bene, and M. , Contrast-enhanced MR Imaging versus Contrast-enhanced US: A Comparison in Glioblastoma Surgery by Using Intraoperative Fusion Imaging, Radiology, vol.285, pp.242-251, 2017.

G. Unsgård, L. M. Sagberg, and S. Müller, A new acoustic coupling fluid with ability to reduce ultrasound imaging artefacts in brain tumour surgery-a phase I study, Acta Neurochir (Wien), vol.161, pp.1475-86, 2019.

J. Pallud, M. Zanello, and G. Kuchcinski, Individual Variability of the Human Cerebral Cortex Identified Using Intraoperative Mapping, World Neurosurg, vol.109, pp.313-320, 2018.

J. Pallud, E. Mandonnet, and R. Corns, Technical principles of direct bipolar electrostimulation for cortical and subcortical mapping in awake craniotomy, Neurochirurgie, vol.63, pp.158-63, 2017.