Open Access
CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2024; 34(01): 16-24
DOI: 10.1055/s-0043-1776054
Original Article

Readout-Segmented Echoplanar (RESOLVE) Diffusion-Weighted Imaging on 3T MRI in Detection of Cholesteatoma—Our Experience

1   Department of Radiodiagnosis and Imaging, Kasturba Medical College, Manipal, Karnataka, India
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2   Department of Radiodiagnosis, Dr. D. Y. Patil Medical College, Hospital and Research Center, Pimpri, Pune, Maharashtra, India
,
2   Department of Radiodiagnosis, Dr. D. Y. Patil Medical College, Hospital and Research Center, Pimpri, Pune, Maharashtra, India
,
2   Department of Radiodiagnosis, Dr. D. Y. Patil Medical College, Hospital and Research Center, Pimpri, Pune, Maharashtra, India
,
2   Department of Radiodiagnosis, Dr. D. Y. Patil Medical College, Hospital and Research Center, Pimpri, Pune, Maharashtra, India
,
3   Seth A.J.B ENT Municipal Hospital, Mumbai, Maharashtra, India
,
4   Shri Sathya Sai Medical College and Hospital, Chengalpattu, Tamil Nadu, India
› Author Affiliations

Funding None.
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Abstract

Background Several research studies have demonstrated the utility of diffusion-weighted imaging (DWI) in detecting middle ear cholesteatomas, especially with the non-echoplanar imaging (non-EPI) DWI technique. REadout Segmentation Of Long Variable Echo trains (RESOLVE), a multishot-EPI DWI, has better spatial resolution at a thinner section acquisition with reduced image distortion compared to the single-shot-EPI DWI technique.

Purpose In this study, we evaluated the diagnostic ability of RESOLVE -DWI in middle ear cholesteatomas with surgical and histopathological support.

Patients and Methods Fifty patients with clinical suspicion of primary cholesteatoma or postoperative recurrence were subjected to routine sequences and RESOLVE-DWI on magnetic resonance imaging (MRI). Thirty-eight patients had unilateral disease, while 12 patients had bilateral disease. The bilateral temporal bones of 50 patients were evaluated on MRI. The results attained by RESOLVE-DWI were correlated with intraoperative and histopathological findings.

Results RESOLVE-DWI truly detected 55 of the 58 surgically proven cholesteatomas. RESOLVE-DWI could not detect three cholesteatoma lesions due to their small size and falsely diagnosed one case each of impacted wax and non-cholesteatomatous otitis media as cholesteatoma. With a 95% confidence interval, RESOLVE-DWI showed 94.8% sensitivity, 95.2% specificity, 96% positive predictive value, 93% negative predictive value, and 95% diagnostic accuracy in cholesteatoma detection.

Conclusion RESOLVE-DWI is a sensitive and specific DWI technique for detecting middle ear cholesteatoma. However, RESOLVE-DWI has limitations in the diagnosis of small (<3 mm) cholesteatomas.

Note

The study was conducted at the Dr. D. Y. Patil Medical College, Hospital and Research Center, Pimpri, Pune, Maharashtra, India.


Ethical Approval and Consent to Participate

This study was approved prior by the IEC with research protocol number IESC/PGS/2019/173. All patients or the parent/guardian of minor patients provided written and informed consent.




Publication History

Article published online:
23 November 2023

© 2023. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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