- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving 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
Studieoversikt
Status
Intervensjon / Behandling
Detaljert beskrivelse
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
Studietype
Registrering (Faktiske)
Kontakter og plasseringer
Studiesteder
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Haifa, Israel
- Bnai Zion Medical Center
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Prøvetakingsmetode
Studiepopulasjon
Beskrivelse
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
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Observasjonsmodeller: Bare etui
- Tidsperspektiver: Retrospektiv
Kohorter og intervensjoner
Gruppe / Kohort |
Intervensjon / Behandling |
|---|---|
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CT of the temporal bone
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
the size of round window niche and its relation to the cochlea
Tidsramme: january-june 2014 (six months)
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january-june 2014 (six months)
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Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
sizes of working channel from the mastoid cortex into the round window membrane and its relation to the mastoid sagment of the facial nerve
Tidsramme: january-june 2014 (six months)
|
january-june 2014 (six months)
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: Michal Luntz, Prof., chair of otorhinolaryngology department at the Bnai Zion medical center
Studierekorddatoer
Studer hoveddatoer
Studiestart
Primær fullføring (Forventet)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 0140-13-BNZ (Annet stipend/finansieringsnummer: TRADIS GAT LTD. ISRAEL)
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