Temporal High-Resolution Computed Tomography and Magnetic Resonance Imaging of Congenital Inner Ear Anomalies in Children

Abstract

Imaging plays an important role in determining indications of cochlear implantation and choosing candidates for the procedure in children. Temporal high-resolution computed tomography (HRCT) and magnetic resonance imaging (MRI) can display precisely the complex anatomic structure of inner ear. Although HRCT permits detailed imaging of bony structures, MRI gives valuable information about membranous labyrinth, internal acoustic canal, and vestibulocochlear nerve. Magnetic resonance imaging examination of the brain should be performed at the same time to evaluate any coexistent brain parenchymal abnormality. These imaging modalities are complementary methods in evaluating congenital inner ear anomalies. The aim of this pictorial essay is to reviewing temporal HRCT and MRI findings of congenital inner ear anomalies.

Special anatomy series. Imaging inner ear structures with high-frequency ultrasound: Application to physical rehabilitation space medicine

“…A review of the literature was performed for imaging of the inner ear. MRI 8 – 12 and CT 13 , 14 have been used previously. Both T1 and T2 weighted imaging MRIs have captured images of the inner ear 8 – 10 .…”

“…MRI has been used to image the inner ear in diagnosing Meniere disease 15 , 16 . High-resolution CT has been used to study calcium functional imaging of otoliths 13 and congenital inner ear anomalies in children 14 . Current imaging systems of this type are not practically feasible for space travel due to limitations of weight and space, as well as the need for containment of ionizing radiation and strong magnetic fields.…”

Cochlear implantation in children with enlarged vestibular aqueduct (EVA): relationship to Pendred syndrome diagnosis, surgical outcomes, and radiological findings

“…Another aspect considered in our study was the use of imaging studies to plan surgery and avoid potential complications. Several studies have illustrated the importance of a thorough preoperative radiological examination to classify cochlear and/or vestibular anomalies before surgery [64,65]. Abnormal HRCT or MRI scans may predict compromised cochlear patency, thus anticipating difficulties with device insertion [7,23].…”

Escuchar con los ojos: evaluación por tomografía axial computarizada de la pérdida auditiva

“…Es relevante decir que los datos obtenidos con TAC y resonancia magnética (RM) de los huesos temporales son complementarios y en pacientes seleccionados con hipoacusia se deben considerar ambas modalidades (12,13). El método diagnóstico y de planeación quirúrgica recomendado es la TAC del hueso temporal.…”