Assessing Cochlear Length Using Cone Beam Computed Tomography in Adults With Cochlear Implants

Abstract

A novel method for calculating outer- and inner-wall cochlear length using CBCT images has been developed which is feasible in clinical settings.

Comprehensive Analysis of Factors Affecting Cochlear Size: A Systematic Review and Meta‐analysis

“…Gender is another covariate that may affect the size of cochleae, because most related studies found that males' OC was slightly longer than that of females. Certain studies reported that the cochlear size was significantly different between men and women, 2,5,15,19,42,43,57,67 whereas others did not find such a difference 11,12,14,23,28,36,43,59 . This review found no significant difference in the cochlear size according to gender.…”

“…In this systematic review, the data were obtained from 56 studies 2–5,11,12,14–17,19,20,22–26,28–30,32–37,39–45,53–74 . However, there were 65 different subgroups.…”

“…At the beginning of the 21st century, high‐resolution multi‐detector computed tomography (HRCT) was widely used in preoperative imaging, 5,15,23,24 followed by the introduction of cone‐beam computed tomography (CBCT) 19,26,27 . In the current approach, HRCT and CBCT are the most commonly used imaging methods 5,15,19,23,28 . Ultra high‐resolution multi‐detector computed tomography (U‐HRCT) has recently emerged among in vivo imaging methods 29 .…”

“…19,26,27 In the current approach, HRCT and CBCT are the most commonly used imaging methods. 5,15,19,23,28 Ultra high-resolution multi-detector computed tomography (U-HRCT) has recently emerged among in vivo imaging methods. 29 Currently, microcomputed tomography (micro-CT) and synchrotron radiation phase-contrast imaging (SR-PCI) provide the most detailed ultra-high-resolution images.…”

Measuring the cochlea and cochlear implant electrode depth

“…Also in 2014, it was shown that outer cochlea wall measurements could be measured on cone beam CT and these measurements fall in a normal distribution [13]. Then in 2018, it was shown that the inner wall could also be measured on cone beam CT [14]. And in 2017, a method for automated two-turn CDL measurements was presented to decrease clinical time spent measuring CDL and to address user-dependent measurement variability [15].…”