Abstract
Objective: Retrospectively determine the value of 3D reconstructions in addition to traditional 2D axial and coronal plane CT studies of pediatric cochlear implant candidates.
Method: Pediatric cochlear implant candidates with preoperative CT scans were identified, and 3D reconstructions were created. Three readers were blinded to clinical data and interpreted the 2D axial and coronal scans. A separate set of interpretations was made with the addition of 3D reconstructions.
Results: Between 1995 and 2009, 36 pediatric patients undergoing cochlear implantation with preoperative CT imaging were identified. Structures analyzed included the Vestibular Aqueduct, Cochlear Nerve Canal, Cochlea, and Vestibule. Visualization of congenital malformations was scored on a 3-point scale (1, visualized; 2, unsure; 3, not visualized). Wilcoxon signed rank test was used to compare the 2 interpretations. The addition of 3D reconstructions to 2D axial and coronal CT images is expected to improve visualization of malformations in cochlear implant candidates. This information is valuable for evaluation of cochlear implant candidates outside of the academic center setting and in resident training.
Conclusion: Three-dimensional CT reconstructions are complimentary in identification of congenital malformations in cochlear implant candidates.
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