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Related Concept Videos

Computed Tomography01:10

Computed Tomography

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
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Enhancing Electrode Location Assessment in Cochlear Implantation via Computed Tomography Image Fusion
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Cochlear length determination using Cone Beam Computed Tomography in a clinical setting.

Waldemar Würfel1, Heinrich Lanfermann2, Thomas Lenarz1

  • 1Department of Otorhinolaryngology, Hannover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany.

Hearing Research
|August 16, 2014
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Summary
This summary is machine-generated.

Cochlear length, crucial for cochlear implant surgery, varies significantly by gender. This study presents a reproducible method using Cone Beam Computed Tomography to measure cochlear length, aiding personalized treatment.

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Area of Science:

  • Anatomy
  • Medical Imaging
  • Otolaryngology

Background:

  • Cochlear implants require audiological and medical evaluations.
  • Anatomical assessment via imaging is vital for medical considerations.
  • Cochlear length variability is increasingly recognized as important for preoperative evaluation.

Purpose of the Study:

  • To introduce a reproducible methodology for determining individual cochlear length in a clinical setting.
  • To establish cochlear length as a clinically available parameter for preoperative evaluation.
  • To investigate the relationship between cochlear length, gender, age, and ear laterality.

Main Methods:

  • Retrospective analysis of temporal bone imaging using Cone Beam Computed Tomography.
  • Utilized OsiriX software with a 3D Multiplanar Reconstruction tool.
  • Defined and measured cochlear length from the bony round window to the helicotrema along the lateral wall.

Main Results:

  • Measured cochlear length in 436 temporal bones (218 subjects).
  • Mean cochlear length was 37.6 mm (SD: ± 1.93 mm), with a range of 32-43.5 mm.
  • Found a significant difference in cochlear length between genders (p < .0001), but not between left/right ears or with age.

Conclusions:

  • Cochlear length is a reproducible and clinically relevant parameter for cochlear implant treatment.
  • Significant gender-based differences in cochlear length warrant consideration in personalized treatment planning.
  • Individual cochlear length evaluation may enhance cochlear implant electrode selection and surgical outcomes.