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

Autor: Puel U; Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 Avenue du Marechal de Lattre de Tassigny, 54000, Nancy, France. ulysse.puelpro@gmail.com.; CIC, Innovation Technologique, Université de Lorraine, University Hospital Center of Nancy, Nancy, France. ulysse.puelpro@gmail.com.; University of Lorraine, INSERM, IADI, Nancy, France. ulysse.puelpro@gmail.com., Beysang A; Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 Avenue du Marechal de Lattre de Tassigny, 54000, Nancy, France., Hossu G; CIC, Innovation Technologique, Université de Lorraine, University Hospital Center of Nancy, Nancy, France.; University of Lorraine, INSERM, IADI, Nancy, France., Eliezer M; Department of Radiology, Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts, 28 Rue de Charenton, 75012, Paris, France., Assabah B; Faculty of Medicine and University Hospital, Department of Anatomy, University of Lorraine, 9 Avenue de la Forêt de Haye, 54500, Vandœuvre-lès-Nancy, France., Ambarki K; Siemens Healthcare SAS, Saint Denis, France., Gondim Teixeira PA; Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 Avenue du Marechal de Lattre de Tassigny, 54000, Nancy, France.; CIC, Innovation Technologique, Université de Lorraine, University Hospital Center of Nancy, Nancy, France.; University of Lorraine, INSERM, IADI, Nancy, France., Blum A; Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 Avenue du Marechal de Lattre de Tassigny, 54000, Nancy, France.; CIC, Innovation Technologique, Université de Lorraine, University Hospital Center of Nancy, Nancy, France.; University of Lorraine, INSERM, IADI, Nancy, France., Parietti-Winkler C; Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, 29 avenue du Maréchal de Lattre de Tassigny, 54035, Nancy Cedex, France., Gillet R; Guilloz Imaging Department, Central Hospital, University Hospital Center of Nancy, 29 Avenue du Marechal de Lattre de Tassigny, 54000, Nancy, France.; CIC, Innovation Technologique, Université de Lorraine, University Hospital Center of Nancy, Nancy, France.; University of Lorraine, INSERM, IADI, Nancy, France.
Jazyk: angličtina
Zdroj: European radiology experimental [Eur Radiol Exp] 2025 Jan 02; Vol. 9 (1), pp. 1. Date of Electronic Publication: 2025 Jan 02.
DOI: 10.1186/s41747-024-00538-x
Abstrakt: 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.
Competing Interests: Declarations. Ethics approval and consent to participate: Studies on anonymously donated specimens do not require review board approval in our institution. The head of the Department of Anatomy at the Lorraine’s University, Prof. Manuela PEREZ, agreed on the use of cadaveric specimens for this study. Regarding living subjects, the retrospective use of anonymized data does not require IRB approval in our institution and is specifically mentioned in the patient’s charter. Consent for publication: Not applicable. Competing interests: Two authors in this work, AB and PAGT, are involved in a nonremunerated research contract with Canon Medical Systems. KA is a Siemens Healthcare GmbH employee. The remaining authors have no conflict of interest to report.
(© 2024. The Author(s).)
Databáze: MEDLINE
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