Intra- and Interrater Reliability of CT- versus MRI-Based Cochlear Duct Length Measurement in Pediatric Cochlear Implant Candidates and Its Impact on Personalized Electrode Array Selection.

compared a medium-length electrode array (24 mm) and a standard-length lateral wall array (31.5 mm) from MED-EL ® , Innsbruck, Austria, and showed a trend towards better speech perception with longer electrode arrays and a greater AID in a prospective study in 13 CI users.

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However, studies have shown that in precurved electrode arrays, modiolar proximity positively affects postoperative speech outcomes, whereas in lateral wall electrode arrays, angular insertion depth (AID) is a highly significant factor for postoperative speech perception [ 13 ].

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