Cone-beam Computed Tomography (CBCT) of temporal bone after cochlear implantation – first experiences

Czech version

Authors: J. Dršata ¹; Jana Dědková ²; J. Duška ³; M. Okluský ¹; R. Mottl ³; L. Školoudík ¹; Viktor Chrobok ¹
Authors‘ workplace: Klinika otorinolaryngologie a chirurgie hlavy a krku, Lékařská fakulta v Hradci Králové, Univerzita Karlova, Fakultní nemocnice Hradec Králové ¹; Radiologická klinika, Lékařská fakulta v Hradci Králové, Univerzita Karlova, Fakultní nemocnice Hradec Králové ²; Stomatologická klinika, Lékařská fakulta v Hradci Králové, Univerzita Karlova, Fakultní nemocnice Hradec Králové ³
Published in: Otorinolaryngol Foniatr, 69, 2020, No. 2, pp. 62-69.
Category: Original Article

Overview

The information about the position of the implant after cochlear implantation is very important for the surgeon and the entire rehabilitation team. Cone-beam CT (CBCT) is a special type of computed tomography (CT), which provides better imaging with a lower radiation dose on a small area of the cochlea. The aim of the paper is to inform the professional public about the introduction of this imaging method in Czechia. In the ORL Dept. University Hospital Hradec Králové, CBCT has been performed on 31 devices in 30 users of cochlear implant of all three CI manufacturers available in the Czech Republic. Selected parameters were evaluated and their results are discussed. CBCT is a standard at foreign implant centres and its introduction in the Czech Republic is a logical step towards improving the care of implant centres. The teamwork of ENT doctors, examining stomatologist, interpreting radiologist and rehabilitation team is important for a correct examination process. Optimum of the imaging in the future will be perioperative CBCT in the operating room, which can only be used to verify the position of the electrode array in all patients immediately after insertion and eventually to reposition it.

Keywords:

cochlear implantation – Cone-beam-CT – cochlear implant – electrode

Sources

1. Aksenovová, Z., Kabelka, Z.: Výsledky kochleárních implantací u hluchoslepých dětí. Otorinolaryngol Foniatr, 59, 2010, 2, s. 51–54.

2. Alexiades, G., Dhanasingh, A., Jolly, C.: Method to estimate the complete and two-turn cochlear duct length. Otol Neurootol, 36, 2015, 5, s. 904–907.

3. An, S. Y., An, C. H., Lee, K. Y., et al.: Diagnostic role of cone beam computed tomography for the position of straight array. Acta Oto-Laryngol, 138, 2018, 4, s. 375–381.

4. Aschendorff, A., Kromeier, J., Klenzner, T., et al.: Quality control after insertion of the nucleus contour and contour advance electrode in adults. Ear Hear, 2007, 28, s. 75–79.

5. Bouček, J., Kluh, J., Čada, Z., et al.: 30 let kochleárních implantací v České republice. Čas Lék Čes, 156, 2017, 4, s. 178–182.

6. Boyd, P. J.: Potential benefits from deeply inserted cochlear implant electrodes. Ear Hearing, 32, 2011, 4, s. 411–427.

7. Caversaccio, M., Gavaghan, K., Wimmer, W. et al.: Robotic cochlear implantation: surgical procedure and first clinical experience. Acta Oto-Laryngol, 137, 2017, 4, s. 447–454.

8. Černý, L., Skřivan, J.: Kochleární a kmenová implantace u dospělých – výsledky. Otorinolaryngol Foniatr, 56, 2007, 4, s. 191–194.

9. Frisch, C. D., Carlson, M. L., Lane, J. I., et al.: Evaluation of a new mid-scala cochlear implant electrode using microcomputed tomography. Laryngoscope, 125, 2015, 12, s. 2778–2783.

10. Gál, B., Kostřica, R., Hložek, J., et al.: Brněnské implantační centrum: výsledky léčby jednostranné kochleární implantace u dospělých pacientů. Otorinolaryngol Foniatr, 68, 2019, 1, s. 18–23.

11. Gál, B., Kostřica, R., Hložek, J., et al.: Brněnské implantační centrum: analýza komplikací kochleárních implantací u dospělých pacientů. Otorinolaryngol Foniatr, 68, 2019, 1, s. 24–29.

12. Gwon, T. M., Min, K. S., Kim, J. H., et al.: Fabrication and evaluation of an improved polymer-based cochlear electrode array for atraumatic insertion. Biomed Microdevices, 17, 2015, 2, s. 32.

13. Manrique, M., Picciafuoco, S., Manrique, R., et al.: Atraumaticity study of 2 cochlear implant electrode arrays. Otol Neurootol, 35, 2014, 4, s. 619–628.

14. Marx, M., Risi, F., Escude, B., et al.: Reliability of cone beam computed tomography in scalar localization of the electrode array: a radio histological study. Eur Arch Otorhinolaryngol, 271, 2014, 4, s. 673–679.

15. Rafferty, M. A., Siewerdsen, J. H., Chan, Y., et al.: Intraoperative cone-beam CT for guidance of temporal bone surgery. Otolaryngol Head Neck Surg, 134, 2006, 5, s. 801–808.

16. Ruivo, J., Mermuys, K., Bacher, K., et al.: Cone beam computed tomography, a low-dose imaging technique in the postoperative assessment of cochlear implantation. Otol Neurootol, 30, 2009, 3, s. 299–303.

17. Saeed, S. R., Selvadurai, D., Beale, T., et al.: The use of cone-beam computed tomography to determine cochlear implant electrode position in human temporal bones. Otol Neurootol, 35, 2014, 8, s. 1338–1344.

18. Schurzig, D., Timm, M. E., Batsoulis, C., et al.: Analysis of Different Approaches for Clinical Cochlear Coverage Evaluation After Cochlear Implantation. Otol Neurootol, 39, 2018, 8, s. e642–e650.

19. Theunisse, H. J., Joemai, R. M., Maal, T. J., et al.: Cone-beam CT versus multi-slice CT systems for postoperative imaging of cochlear implantation--a phantom study on image quality and radiation exposure using human temporal bones. Otol Neurootol, 36, 2015, 4, s. 592–599.

20. Trieger, A., Schulze, A., Schneider, M., et al.: In vivo measurements of the insertion depth of cochlear implant arrays using flat-panel volume computed tomography. Otol Neurootol, 32, 2011, 1, s. 152–157.

21. Vokřál, J., Černý, L., Skřivan, J., et al.: Nastavování zvukových procesorů u pacientů s kochleárním implantátem na Foniatrické klinice 1. LF UK a VFN. Otorinolaryngol Foniatr, 61, 2012, 4, s. 216–222.

22. Vymlátilová, E., Příhodová, J., Šupáček, I., et al.: Faktory ovlivňující využitíkochleárního implantátu u dětí. Otorinolaryngol Foniatr, 1999, 3, s. 131–134.

23. Walliczek-Dworschak, U., Diogo, I., Strack, L., et al.: Indications of cone beam CT in head and neck imaging in children. Otorhinolaryngol Ital, 37, 2017, 4, s. 270–275.

24. Wimmer, W., Bell, B., Huth, M. E. et al.: Cone beam and micro-computed tomography validation of manual array insertion for minimally invasive cochlear implantation. Audiol Neuro-Otol, 19, 2014, 1, s. 22–30.