Determination of Cochlear Duct Length With 3D Versus Two-dimensional Methods: A Retrospective Clinical Study of Imaging by Computed Tomography and Cone Beam Computed Tomography.
In Vivo
; 35(6): 3339-3344, 2021.
Article
em En
| MEDLINE
| ID: mdl-34697167
ABSTRACT
BACKGROUND:
The aim of this study was to compare three different methods for measurement of cochlear duct length (CDL) in the clinical setting for two different imaging modalities, namely computed tomography (CT) and cone-beam computed tomography (CBCT). PATIENTS ANDMETHODS:
One hundred temporal bone data sets (CT n=50; CBCT n=50) of non-malformed cochleae were retrospectively analyzed using three different CDL estimation techniques 3D curved multiplanar reconstruction (cMPR), 2D cMPR and the A-value formula.RESULTS:
The data sets belonged to 60 patients (34 males, 26 females; mean age=50.28±18.58 years). For both imaging modalities, application of the 3D cMPR estimation technique led to significantly greater mean CDL values than the two-dimensional methods (p<0.0083). The CDL measurements viewed in CT imaging software were significantly shorter than the corresponding CBCT measurements (p<0.05). Using a linear mixed model, differences in CDL by sex (p=0.796), age (p=0.377) and side of ear (p=0.690) were not significant.CONCLUSION:
The 3D cMPR technique was found to provide the most accurate in vivo CDL measurement in non-malformed cochlea in both CT and CBCT imaging compared to 2D methods. The study results also suggest that the higher spatial resolution in CBCT imaging results in more precise CDL determination than in CT.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Implante Coclear
Tipo de estudo:
Observational_studies
Limite:
Adult
/
Aged
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Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
In Vivo
Ano de publicação:
2021
Tipo de documento:
Article