- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT02093806
Clinical Applications of Round Window Imaging Anatomy in Cochlear Implant Surgery
Clinical Applications of Round Window High Resolution Computerised Tomography Anatomy in Cochlear Implant Surgery
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
The assessment of the anatomy of the round window will be executed using the stractured measuring software used for imaging of the Bnai Zion medical center (CARESTREAM PACS Ver. 11.0, CARSTREAM HEALTH INC.) in IAC window (centered at 700 with a total width of 4000) in the available zoom by the software (usually 400-800%).
Measuring the length (mm) and angle will be executed by the software's structured rulers.
Measuring protocol:
- Measured scans: one taken in an orbito-meatal plane
- Chosen slices: where both the round window niche and the external ear canal are seen on the same slice
Distances measured:
- Distance 1: between the anterior edge of the round window niche and the cortex of the mastoid, with a minimal distance of 0.5mm to the posterior wall of the external ear canal
- Distance 2: between the posterior edge of the round window niche and the cortex of the mastoid, with a minimal distance of 0.3mm to the anterior edge of the mastoid segment of the facial nerve.
- Distance 3: the size of the round window niche (from its anterior to posterior edges)
- Distance 4: between the anterior (most medial) edge of the round window membrane to a point at least 0.3mm anterior to the mastoid segment of the facial nerve.
- Distance 5: between the posterior (most lateral) edge of the round window membrane to a point at least 0.3mm anterior to the mastoid segment of the facial nerve
- Distance 6: size of round window membrane (anterior/medial to posterior/lateral)
- Distance 7: between the lateral edges of distance 1 and 2 marking the cortical size of the "working channel" created between the lines (from the cortex to the round window).
Angles measured:
- Between distance 1 and 7 - marking the angle of the "working channel" relatively to the cortex
- Between distance 1, passing in the middle of distance 3 to the middle of distance 6 - marking the angle of possible insertion from the working channel into the cochlea
Type d'étude
Inscription (Réel)
Contacts et emplacements
Lieux d'étude
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Haifa, Israël
- Bnai Zion Medical Center
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Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- age 20 years old or older
- high resolution computerized tomography of the temporal bone (slices ≤1mm) before the surgery
- on the measured slices both the round window niche and the posterior wall of the external ear canal are seen
Exclusion Criteria:
- inner, middle or external ear malformation
- temporal bone malformation
- status post cochlear implant
- status post temporal bone trauma
- slices were the round window niche and the posterior wall of the external ear canal are not seen on the same slice
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Modèles d'observation: Cas uniquement
- Perspectives temporelles: Rétrospective
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
|---|---|
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CT of the temporal bone
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
|---|---|
|
the size of round window niche and its relation to the cochlea
Délai: january-june 2014 (six months)
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january-june 2014 (six months)
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Mesures de résultats secondaires
Mesure des résultats |
Délai |
|---|---|
|
sizes of working channel from the mastoid cortex into the round window membrane and its relation to the mastoid sagment of the facial nerve
Délai: january-june 2014 (six months)
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january-june 2014 (six months)
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Collaborateurs et enquêteurs
Parrainer
Les enquêteurs
- Chercheur principal: Michal Luntz, Prof., chair of otorhinolaryngology department at the Bnai Zion medical center
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 0140-13-BNZ (Autre subvention/numéro de financement: TRADIS GAT LTD. ISRAEL)
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