P. Pelliccia, F. Venail, and A. Bonafé, Cochlea size variability and implications in clinical practice, Acta Otorhinolaryngol Ital, vol.34, pp.42-51, 2014.

A. Miracle and S. Mukherji, Conebeam CT of the Head and Neck, Part 1: Physical Principles, American Journal of Neuroradiology, vol.106, issue.1, pp.1088-95, 2009.
DOI : 10.1016/j.tripleo.2008.03.018

M. Dahmani-causse, M. Marx, and O. Deguine, Morphologic examination of the temporal bone by cone beam computed tomography: Comparison with multislice helical computed tomography, European Annals of Otorhinolaryngology, Head and Neck Diseases, vol.128, issue.5, pp.230-235, 2011.
DOI : 10.1016/j.anorl.2011.02.016

T. Kurzweg, C. Dalchow, and M. Bremke, The Value of Digital Volume Tomography in Assessing the Position of Cochlear Implant Arrays in Temporal Bone Specimens, Ear and Hearing, vol.31, issue.3, pp.413-422, 2010.
DOI : 10.1097/AUD.0b013e3181d3d6b6

S. Cushing, M. Daly, and C. Treaba, High-resolution cone-beam computed tomography: a potential tool to improve atraumatic electrode design and position, Acta Oto-Laryngologica, vol.26, issue.4, pp.361-369, 2012.
DOI : 10.1097/00129492-200501000-00007

C. Güldner, S. Wiegand, and R. Weiss, Artifacts of the electrode in cochlea implantation and limits in analysis of deep insertion in cone beam tomography (CBT), European Archives of Oto-Rhino-Laryngology, vol.30, issue.3, pp.767-72, 2012.
DOI : 10.1097/MAO.0b013e31818a08e8

M. Marx, F. Risi, and B. Escudé, Reliability of cone beam computed tomography in scalar localization of the electrode array: a radio histological study, European Archives of Oto-Rhino-Laryngology, vol.138, issue.Suppl 1, pp.673-682, 2014.
DOI : 10.1016/j.otohns.2007.09.003

S. Saeed, D. Selvadurai, and T. Beale, The Use of Cone-Beam Computed Tomography to Determine Cochlear Implant Electrode Position in Human Temporal Bones, Otology & Neurotology, vol.35, issue.8, pp.1338-1382, 2014.
DOI : 10.1097/MAO.0000000000000295

I. Diogo, N. Franke, and S. Steinbach-hundt, Differences of radiological artefacts in cochlear implantation in temporal bone and complete head, Cochlear Implants International, vol.2012, issue.10, pp.112-119, 2014.
DOI : 10.1097/MAO.0b013e3181fcf04d

Y. Nguyen, G. Kazmitcheff, D. Seta, and D. , Definition of Metrics to Evaluate Cochlear Array Insertion Forces Performed with Forceps, Insertion Tool, or Motorized Tool in Temporal Bone Specimens, BioMed Research International, vol.32, issue.6, p.532570, 2014.
DOI : 10.1097/MAO.0b013e31825f24de
URL : https://hal.archives-ouvertes.fr/hal-01148679

B. Escudé, C. James, and O. Deguine, The Size of the Cochlea and Predictions of Insertion Depth Angles for Cochlear Implant Electrodes, Audiology and Neurotology, vol.47, issue.1, pp.27-33, 2006.
DOI : 10.1121/1.399052

D. Seta, D. Nguyen, Y. Bonnard, and D. , The role of electrode placement in bilatera simultaneously cochlear implanted adult patients, Otolaryngol Head Neck Surg, p.0194599816645774, 2016.

B. Verbist, M. Skinner, and L. Cohen, Consensus Panel on a Cochlear Coordinate System Applicable in Histologic, Physiologic, and Radiologic Studies of the Human Cochlea, Otology & Neurotology, vol.31, issue.5, pp.722-752, 2010.
DOI : 10.1097/MAO.0b013e3181d279e0

J. Lane, C. Driscoll, and R. Witte, Scalar Localization of the Electrode Array After Cochlear Implantation, Otology & Neurotology, vol.28, issue.2, pp.191-195, 2007.
DOI : 10.1097/01.mao.0000247817.31572.ed

P. Lecerf, D. Bakhos, and J. Cottier, Midmodiolar Reconstruction as a Valuable Tool to Determine the Exact Position of the Cochlear Implant Electrode Array, Otology & Neurotology, vol.32, issue.7, pp.1075-81, 2011.
DOI : 10.1097/MAO.0b013e318229d4dd

R. Schulze, U. Heil, and D. Gross, Artefacts in CBCT: a review, Dentomaxillofacial Radiology, vol.24, issue.5, pp.265-73, 2011.
DOI : 10.1109/TNS.2005.852703

. Address-for-correspondence:-daniele-de-seta, B. Ghu-pitié-salpêtrière, and . Babinski, Service ORL, Otologie, Implants Auditifs et Chirurgie de la Base du Crâne, 47-83 Boulevard de l'Hôpital, 75013 Paris, France. E-mail address: daniele_deseta@yahoo.it Received, p.2016, 2016.