DICOM-Based Quantification of MRI Artifact from Auditory Implants: a Technical Note Comparing Bone-Conduction- and Cochlear Implants.
Overview
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Freiburg, Freiburg, Germany
- Department of Neuroradiology, University Medical Center Freiburg, Freiburg, Germany
Abstract
Purpose: MRI in patients with auditory implants is limited by implant-related signal void, geometric distortion, and intravoxel dephasing. Artifact extent is often described qualitatively. We aimed to quantify MRI artifact burden from a novel transcutaneous bone-conduction implant (SentioTM) and to compare it with cochlear implant controls under routine, label-compliant 1.5 T clinical conditions.
Methods: We retrospectively analyzed MRI examinations of patients with a SentioTM implant (n = 7) and cochlear implant controls (n = 5). All scans were performed at 1.5 T, the manufacturer-approved field strength for the SentioTM Ti implant, on the same scanner using routine transverse turbo spin-echo sequences (T2-weighted and T1-weighted; 5‑mm slice thickness). Artifacts were quantified slice-by-slice with a custom Python-based DICOM pipeline. The artifact-to-brain ratio (ABR, %) and maximum void area (cm2) were computed; ABRmax (peak slice) served as patient-level summary. Groups were compared using the Mann-Whitney U test and Cliff’s delta.
Results: SentioTM implants showed smaller and more confined artifacts. Median ABRmax was 1.1% [IQR 0.2] with a median maximum void area of 1.7 cm2 [IQR 0.4]. Cochlear implant controls showed larger artifacts (ABRmax 2.6% [IQR 1.0]; median maximum void area 3.8 cm2 [IQR 2.0]; p = 0.007–0.01; δ = 0.81–0.89). Supratentorial diagnostic image quality outside the immediate implant region was preserved in all T2w/
Conclusion: Quantitative artifact assessment using ABRmax is feasible in routine 1.5 T MRI. Under identical protocol conditions, the SentioTM implant produced a smaller and more localized MRI artifact burden than the cochlear implant controls examined here. Routine turbo spin-echo imaging remained diagnostically useful outside the implant region.
Supplementary Information: The online version of this article (https://
Reproduced under the paper's license (CC BY), from the paper cited above.
Code
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Data
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Data Availability
The DICOM-based pipeline is available from the corresponding author on reasonable request. Raw imaging data cannot be shared publicly due to patient privacy regulations.
Reproduced under the paper's license (CC BY), from the paper cited above.
Versions
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Version 2, 28 September 2026
- Publisher: n/a → Springer Science+Business Media
Version 1, 27 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 4 authors, 5 keywords, 11 MeSH terms, 1 funder, 11 references.
Cite
This paper
Straub, B., Arndt, S., Urbach, H., & Becker, L. I. (2026). DICOM-Based Quantification of MRI Artifact from Auditory Implants: a Technical Note Comparing Bone-Conduction- and Cochlear Implants. Clinical neuroradiology, 36(3), 1113-1117. https://
BibTeX
@article{straub2026dicom
author = {Straub, Benjamin and Arndt, Susan and Urbach, Horst and Becker, Lucas I},
title = {{DICOM-Based Quantification of MRI Artifact from Auditory Implants: a Technical Note Comparing Bone-Conduction- and Cochlear Implants}},
journal = {Clinical neuroradiology},
year = {2026},
month = jun,
volume = {36},
number = {3},
pages = {1113--1117},
publisher = {Springer Science+Business Media},
issn = {1869-1439},
doi = {10.1007/
url = {https://
pmid = {42230343},
pmcid = {PMC13522037}
}
RIS
TY - JOUR
AU - Straub, Benjamin
AU - Arndt, Susan
AU - Urbach, Horst
AU - Becker, Lucas I
TI - DICOM-Based Quantification of MRI Artifact from Auditory Implants: a Technical Note Comparing Bone-Conduction- and Cochlear Implants
T2 - Clinical neuroradiology
J2 - Clin Neuroradiol
PY - 2026
DA - 2026/
VL - 36
IS - 3
SP - 1113
EP - 1117
SN - 1869-1439
PB - Springer Science+Business Media
DO - 10.1007/
UR - https://
LA - en
ER -
CSL-JSON
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