[The diagnostic value of high resolution CT in assessment of temporal bone traumatic facial nerve paralysis].
OBJECTIVE
To investigate the diagnostic value of high resolution CT for temporal bone traumatic facial nerve paralysis and the guidance significance for surgery.


METHODS
Twenty-nine patients of traumatic facial nerve paralysis were investigated. The predictive diagnosis was made according to the clinical data and the image features of HRCT, then a comparative analysis of the preoperative image features and the surgical findings were carried out.


RESULTS
The trend of temporal bone fracture displayed on the CT scan was basically consisted with the surgical findings. The direct CT signs of facial nerve injury include the bone fracture line went through the tube, bone tube rupture or continuity interruption, while the indirect CT signs include local incrassation of the facial nerve, lower bone density of the tube, geniculate fossa expansion, oppressed facial nerve, et al. The predictive diagnostic accordance rates of all the image features were above 90% as to the surgical findings.


CONCLUSIONS
High resolution CT could localize the trend of temporal bone fracture,and is helpful to estimate the extent of facial nerve injury and other complications. High resolution CT could provide reliable basis for clinical diagnosis and treatment.
Guo
Aikuan
A
Department of Otolaryngology, the First Hospital, Zhengzhou University, Zhengzhou, 450052, China.
Li
Sujuan
S
Qin
Zhaobing
Z
Lu
Wei
W
Jiang
Lan
L
D000293:Adolescent; D000328:Adult; D005154:Facial Nerve / Q000000981:diagnostic imaging; D020220:Facial Nerve Injuries / Q000000981:diagnostic imaging*; D005158:Facial Paralysis / Q000000981:diagnostic imaging*; D005260:Female; D050723:Fractures, Bone / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013701:Temporal Bone / Q000000981:diagnostic imaging* / Q000293:injuries; D014057:Tomography, X-Ray Computed / Q000379:methods; D055815:Young Adult