Abstract: Objective To investigate multislice CT (MSCT) findings of intratemporal facial nerve canal with multiplanar reconstruction (MPR) and curved-planar reconstruction (CPR). Methods MSCT was performed in 70 patients with paranasal sinusitis without abnormality in temporal bone including 50 adults and 20 children. Original images were transferred to workstation for image processing. According to the course of intratemporal facial nerve canal,MPR and CPR images were acquired. Facial nerve canal and relation with adjacent structures were measured in different MPR and CPR images. The appearances of facial nerve canal in different images and age groups were compared. Results The length of tympanic segment on CPR image was longer than that on MPR image,and its width on MPR image was wider than that on CPR image (P0.05).However,there was no significant difference in the length and width of labyrinthine and mastoid segment between MPR and CPR images (P0.05). The CPR images acquired in the coronal plane showed the first genu exactly,while the CPR images acquired in the axial plane showed the second genu exactly. The dehiscent incidence of the first genu was 21.4% on both MPR and CPR images,and 32.9%,31.4% of the tympanic segment on MPR and CPR images,respectively (P0.05). One ear with the bifurcate of the tympanic segment was shown on MPR image,but missed on CPR images. The length of mastoid segment in adults was longer than that in children (P0.05). Conclusion MPR and CPR images by multislice spiral CT are both valuable methods of facial nerve canal assessment. In combination with primitive axial images,MPR and CPR images may provide reliable evidence for the diagnosis and surgical treatment of facial nerve diseases.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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