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Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion
Published on: January 17, 2025
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MDCT Assessment of the Cochlear-Carotid Interval
1Department of Radiology, Head and Neck Surgery, Kecioren Education and Research Hospital; Ankara, Turkey - hpgunbey@hotmail.com.
The Neuroradiology Journal
|September 25, 2013
Summary
The cochlear-carotid interval (CCI) varies from 0.0 to 6 mm, with 0.9% of patients showing a minimal or absent space. This measurement is crucial for preventing carotid artery injury during cochlear implant surgery.
Area of Science:
- Radiology
- Neurosurgery
- Anatomy
Background:
- The proximity of the cochlea and carotid artery poses a surgical risk during cochlear implant procedures.
- Understanding the cochlear-carotid interval (CCI) is vital for surgical safety.
Purpose of the Study:
- To establish the normal range of the cochlear-carotid interval (CCI) using 64-slice multi-detector computed tomography (MDCT).
- To assess the relationship between CCI and patient demographics like sex.
Main Methods:
- 1105 patients underwent temporal MDCT scans.
- The CCI was measured by two independent observers using coronal, axial, and sagittal views.
- Measurements were analyzed for variations, correlations, and relationships with sex.
Main Results:
- The CCI ranged from 0.0 mm to 6 mm across 2210 temporal sides.
- A complete absence of the interval (0.0 mm) was observed in 0.9% of cases.
- No significant correlation was found between CCI and sex, or between measurements by different readers or sides.
Conclusions:
- The cochlear-carotid interval (CCI) exhibits significant variability, ranging from 0.0 mm to 6 mm, irrespective of sex.
- Preoperative knowledge of CCI, particularly thin or absent bone, is essential for radiologists to alert surgeons and prevent carotid canal penetration during cochlear implant surgery.
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