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01-10-2016 | Magnetic Resonance

3D-Flair sequence at 3T in cochlear otosclerosis

Authors: Francesco Lombardo, Sara De Cori, Gayane Aghakhanyan, Domenico Montanaro, Daniele De Marchi, Francesca Frijia, Susanna Fortunato, Francesca Forli, Dante Chiappino, Stefano Berrettini, Raffaello Canapicchi

Published in: European Radiology | Issue 10/2016

Abstract

Purpose

To assess the capability of three-dimensional fluid-attenuated inversion recovery (3D-FLAIR) sequences in detecting signal alterations of the endolabyrinthine fluid in patients with otosclerosis.

Materials and methods

3D-FLAIR before and after (-/+) gadolinium (Gd) administration was added to the standard MR protocol and acquired in 13 patients with a clinical/audiological diagnosis of severe/profound hearing loss in otosclerosis who were candidates for cochlear implantation and in 11 control subjects using 3-T magnetic resonance imaging (MRI) equipment. The MRI signal of the fluid-filled cochlea was assessed both visually and calculating the signal intensity ratio (SIR = signal intensity cochlea/brainstem).

Results

We revealed no endocochlear signal abnormalities on T1-weighted –/+ Gd images for either group, while on 3D-FLAIR we found bilateral hyperintensity with enhancement after Gd administration in eight patients and bilateral hyperintensity without enhancement in one patient. No endocochlear signal abnormalities were detected in other patients or the control group.

Conclusion

Using 3-T MRI equipment, the 3D-FLAIR -/+ Gd sequence is able to detect the blood-labyrinth barrier (BLB) breakdown responsible for alterations of the endolabyrinthine fluid in patients with cochlear otosclerosis. We believe that 3D-FLAIR +/- Gd is an excellent imaging modality to assess the intra-cochlear damage in otosclerosis patients.

Key Points

• Gd-enhanced T1-weighted MRI has limited application to detect intra-cochlear damage.

• 3D-FLAIR is less sensitive to flux artefacts and allows multiplanar reconstruction.

• Post-Gd 3D-FLAIR is advantageous as it may highlight the BLB breakdown.

• Using 3D-FLAIR -/+ Gd, we were able to identify intra-cochlear signal hyperintensities.

• 3D-FLAIR might be applied for monitoring disease progression and treatment response.

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Title: 3D-Flair sequence at 3T in cochlear otosclerosis
Authors: Francesco Lombardo
Sara De Cori
Gayane Aghakhanyan
Domenico Montanaro
Daniele De Marchi
Francesca Frijia
Susanna Fortunato
Francesca Forli
Dante Chiappino
Stefano Berrettini
Raffaello Canapicchi
Publication date: 01-10-2016
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 10/2016
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-4170-9

Keynote webinar | Spotlight on medication adherence

Springer Medicine

3D-Flair sequence at 3T in cochlear otosclerosis

Abstract

Purpose

Materials and methods

Results

Conclusion

Key Points

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Purpose

Materials and methods

Results

Conclusion

Key Points

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