Olivier Maillot1, Arnaud Attyé2, Claire Boutet3, Kamel Boubagra4, Romain Perolat1, Marion Zanolla1, Sylvie Grand4, Sébastien Schmerber5, Alexandre Krainik4. 1. Department of Neuroradiology and MRI, Grenoble University Hospital, SFR RMN Neurosciences, Grenoble, France. 2. Department of Neuroradiology and MRI, Grenoble University Hospital, SFR RMN Neurosciences, Grenoble, France; University Grenoble Alpes, IRMaGe, 38000 Grenoble, France. Electronic address: aattye@chu-grenoble.fr. 3. Department of Radiology, Saint-Etienne University Hospital, Saint-Etienne, France. 4. Department of Neuroradiology and MRI, Grenoble University Hospital, SFR RMN Neurosciences, Grenoble, France; University Grenoble Alpes, IRMaGe, 38000 Grenoble, France. 5. Department of Otolaryngology-Head and Neck Surgery, University Hospital of Grenoble, Grenoble, France.
Abstract
PURPOSE: After a trauma, the conductive ossicular chain may be disrupted by ossicular luxation or fracture. Recent developments in 3D-CT allow a better understanding of ossicular injuries. In this retrospective study, we compared patients with post-traumatic conductive hearing loss (CHL) with those referred without CHL to evaluate the relationship between ossicular injuries and CHL. We also assessed the added value of 3D reconstructions on 2D-CT scan to detect ossicular lesions in patients surgically managed. METHODS: The CT scans were performed using a 40-section spiral CT scanner in 49 patients with post-traumatic CHL (n=29) and without CHL (n=20). Three radiologists performed independent blind evaluations of 2D-CT and 3D reconstructions to detect ossicular chain injury. We used the t-test to explore differences regarding the number of subjects with ossicular injury in the two groups. We also estimated the diagnostic accuracy and the inter-rater agreement of the 3D-CT reconstructions associated to 2D-CT scan. RESULTS: We identified ossicular abnormality in 14 patients out of 29 and in one patient out of 20 in the CHL and non-CHL groups respectively. There was a significant difference regarding the number of subjects with ossicular lesions between the two groups (P≤0.01). The diagnostic sensitivity of 3D-CT reconstructions associated with 2D-CT ranged from 66% to 100% and the inter-reader agreement ranged from 0.85 to 1, depending of the type of lesion. CONCLUSION: The relationship between ossicular lesion and the presence of CHL tightly correlated. 3D-CT reconstructions of the temporal bone are useful to assess patients in a post-traumatic context.
PURPOSE: After a trauma, the conductive ossicular chain may be disrupted by ossicular luxation or fracture. Recent developments in 3D-CT allow a better understanding of ossicular injuries. In this retrospective study, we compared patients with post-traumatic conductive hearing loss (CHL) with those referred without CHL to evaluate the relationship between ossicular injuries and CHL. We also assessed the added value of 3D reconstructions on 2D-CT scan to detect ossicular lesions in patients surgically managed. METHODS: The CT scans were performed using a 40-section spiral CT scanner in 49 patients with post-traumatic CHL (n=29) and without CHL (n=20). Three radiologists performed independent blind evaluations of 2D-CT and 3D reconstructions to detect ossicular chain injury. We used the t-test to explore differences regarding the number of subjects with ossicular injury in the two groups. We also estimated the diagnostic accuracy and the inter-rater agreement of the 3D-CT reconstructions associated to 2D-CT scan. RESULTS: We identified ossicular abnormality in 14 patients out of 29 and in one patient out of 20 in the CHL and non-CHL groups respectively. There was a significant difference regarding the number of subjects with ossicular lesions between the two groups (P≤0.01). The diagnostic sensitivity of 3D-CT reconstructions associated with 2D-CT ranged from 66% to 100% and the inter-reader agreement ranged from 0.85 to 1, depending of the type of lesion. CONCLUSION: The relationship between ossicular lesion and the presence of CHL tightly correlated. 3D-CT reconstructions of the temporal bone are useful to assess patients in a post-traumatic context.
Authors: Rory J Lubner; Renata M Knoll; Danielle R Trakimas; Ryan A Bartholomew; Daniel J Lee; Brad Walters; Joseph B Nadol; Aaron K Remenschneider; Elliott D Kozin Journal: Laryngoscope Investig Otolaryngol Date: 2020-04-21
Authors: Georgios Mantokoudis; Njima Schläpfer; Manuel Kellinghaus; Arsany Hakim; Moritz von Werdt; Marco D Caversaccio; Franca Wagner Journal: PLoS One Date: 2021-02-08 Impact factor: 3.240
Authors: Ryan A Bartholomew; Rory J Lubner; Renata M Knoll; Iman Ghanad; David Jung; Joseph B Nadol; Victor E Alvarez; Aaron Remenschneider; Elliott D Kozin Journal: Laryngoscope Investig Otolaryngol Date: 2020-03-16