Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference

Abstract Background We evaluated the accuracy of magnetic resonance imaging (MRI) computed tomography (CT)-like sequences compared to normal-resolution CT (NR-CT) and super-high-resolution CT (SHR-CT) for planning of cochlear implantation. Methods Six cadaveric temporal bone specimens were used. 3-T...

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Main Authors: Ulysse Puel, Achille Beysang, Gabriella Hossu, Michael Eliezer, Bouchra Assabah, Khalid Ambarki, Pedro Augusto Gondim Teixeira, Alain Blum, Cécile Parietti-Winkler, Romain Gillet
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Language:English
Published: SpringerOpen 2025-01-01
Series:European Radiology Experimental
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Online Access:https://doi.org/10.1186/s41747-024-00538-x
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author Ulysse Puel
Achille Beysang
Gabriella Hossu
Michael Eliezer
Bouchra Assabah
Khalid Ambarki
Pedro Augusto Gondim Teixeira
Alain Blum
Cécile Parietti-Winkler
Romain Gillet
author_facet Ulysse Puel
Achille Beysang
Gabriella Hossu
Michael Eliezer
Bouchra Assabah
Khalid Ambarki
Pedro Augusto Gondim Teixeira
Alain Blum
Cécile Parietti-Winkler
Romain Gillet
author_sort Ulysse Puel
collection DOAJ
description Abstract Background We evaluated the accuracy of magnetic resonance imaging (MRI) computed tomography (CT)-like sequences compared to normal-resolution CT (NR-CT) and super-high-resolution CT (SHR-CT) for planning of cochlear implantation. Methods Six cadaveric temporal bone specimens were used. 3-T MRI scans were performed using radial volumetric interpolated breath-hold (STARVIBE), pointwise-encoding time reduction with radial acquisition (PETRA), and ultrashort time of echo (UTE) sequences. CT scans were performed on two scanners for SHR-CT and NR-CT acquisitions. Two radiologists evaluated accuracy based on preimplantation metrics and the ability to identify various anatomical structures, particularly the facial recess and round window. Wilcoxon rank-sum test and intraclass correlation coefficient (ICC) were used. Results The facial nerve was always clearly visible (score ≥ 2) in the MRI, NR-CT, and SHR-CT scans (p ≥ 0.621). However, the chorda tympani nerve (CTN) was clearly visualized in UTE, STARVIBE, and PETRA sequences in only 33% (2/6 specimens, p = 0.016), 50% (3/6 specimens, p = 0.038), and 83% (5/6 specimens, p = 0.017) of cases, respectively, whereas it was always clearly visualized in SHR and NR-CT (p = 0.426). The round window (RW) was never visualized in MRI sequences (p ≤ 0.010), whereas it was identified in all cases in SHR and NR-CT (p = 1.000). There was a strong correlation between measurements obtained from MRI and CT modalities (ICC ≥ 0.837). Conclusion MRI CT-like sequences assessed the facial nerve in all cases and the CTN in up to 87% of cases. However, the detection of the RW was insufficient for surgical planning. CT and MRI measurements were in agreement. Relevance statement CT-like MRI sequences can image the anatomy of the facial recess and the length of the basal turn of the cochlea with similar accuracy as conventional CT, although they cannot image the round window. Key Points CT-like MRI sequences are not widely used in preoperative cochlear implantation imaging. CT-like sequences can image the facial recess as well as conventional CT. CT-like sequences can image the basal turn length of the cochlea as well as conventional CT. Round window depiction is not possible with CT-like MRI sequences. Graphical Abstract
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spelling doaj-art-95aae7aa6d384c2ea03dbe4dda1170512025-01-05T12:08:11ZengSpringerOpenEuropean Radiology Experimental2509-92802025-01-019111110.1186/s41747-024-00538-xComparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a referenceUlysse Puel0Achille Beysang1Gabriella Hossu2Michael Eliezer3Bouchra Assabah4Khalid Ambarki5Pedro Augusto Gondim Teixeira6Alain Blum7Cécile Parietti-Winkler8Romain Gillet9Guilloz Imaging Department, Central Hospital, University Hospital Center of NancyGuilloz Imaging Department, Central Hospital, University Hospital Center of NancyCIC, Innovation Technologique, Université de Lorraine, University Hospital Center of NancyDepartment of Radiology, Centre Hospitalier National d’Ophtalmologie des Quinze-VingtsFaculty of Medicine and University Hospital, Department of Anatomy, University of LorraineSiemens Healthcare SASGuilloz Imaging Department, Central Hospital, University Hospital Center of NancyGuilloz Imaging Department, Central Hospital, University Hospital Center of NancyDepartment of Otorhinolaryngology, Head and Neck Surgery, University HospitalGuilloz Imaging Department, Central Hospital, University Hospital Center of NancyAbstract Background We evaluated the accuracy of magnetic resonance imaging (MRI) computed tomography (CT)-like sequences compared to normal-resolution CT (NR-CT) and super-high-resolution CT (SHR-CT) for planning of cochlear implantation. Methods Six cadaveric temporal bone specimens were used. 3-T MRI scans were performed using radial volumetric interpolated breath-hold (STARVIBE), pointwise-encoding time reduction with radial acquisition (PETRA), and ultrashort time of echo (UTE) sequences. CT scans were performed on two scanners for SHR-CT and NR-CT acquisitions. Two radiologists evaluated accuracy based on preimplantation metrics and the ability to identify various anatomical structures, particularly the facial recess and round window. Wilcoxon rank-sum test and intraclass correlation coefficient (ICC) were used. Results The facial nerve was always clearly visible (score ≥ 2) in the MRI, NR-CT, and SHR-CT scans (p ≥ 0.621). However, the chorda tympani nerve (CTN) was clearly visualized in UTE, STARVIBE, and PETRA sequences in only 33% (2/6 specimens, p = 0.016), 50% (3/6 specimens, p = 0.038), and 83% (5/6 specimens, p = 0.017) of cases, respectively, whereas it was always clearly visualized in SHR and NR-CT (p = 0.426). The round window (RW) was never visualized in MRI sequences (p ≤ 0.010), whereas it was identified in all cases in SHR and NR-CT (p = 1.000). There was a strong correlation between measurements obtained from MRI and CT modalities (ICC ≥ 0.837). Conclusion MRI CT-like sequences assessed the facial nerve in all cases and the CTN in up to 87% of cases. However, the detection of the RW was insufficient for surgical planning. CT and MRI measurements were in agreement. Relevance statement CT-like MRI sequences can image the anatomy of the facial recess and the length of the basal turn of the cochlea with similar accuracy as conventional CT, although they cannot image the round window. Key Points CT-like MRI sequences are not widely used in preoperative cochlear implantation imaging. CT-like sequences can image the facial recess as well as conventional CT. CT-like sequences can image the basal turn length of the cochlea as well as conventional CT. Round window depiction is not possible with CT-like MRI sequences. Graphical Abstracthttps://doi.org/10.1186/s41747-024-00538-xCochlear implantationComputed tomographyChorda tympani nerveFacial nerveMagnetic resonance imaging
spellingShingle Ulysse Puel
Achille Beysang
Gabriella Hossu
Michael Eliezer
Bouchra Assabah
Khalid Ambarki
Pedro Augusto Gondim Teixeira
Alain Blum
Cécile Parietti-Winkler
Romain Gillet
Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
European Radiology Experimental
Cochlear implantation
Computed tomography
Chorda tympani nerve
Facial nerve
Magnetic resonance imaging
title Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
title_full Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
title_fullStr Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
title_full_unstemmed Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
title_short Comparison of CT-like MRI sequences for preoperative planning of cochlear implantation using super-high-resolution CT as a reference
title_sort comparison of ct like mri sequences for preoperative planning of cochlear implantation using super high resolution ct as a reference
topic Cochlear implantation
Computed tomography
Chorda tympani nerve
Facial nerve
Magnetic resonance imaging
url https://doi.org/10.1186/s41747-024-00538-x
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