KHẢO SÁT HÌNH ẢNH THẦN KINH VII BẰNG PHẦN MỀM 3D SLICER Ở NGƯỜI BỆNH TEO HẸP ỐNG TAI NGOÀI

Abstract

Congenital aural atresia is a spectrum of ear deformities present at birth that involves some degree of failure of the development of the external auditory canal. This malformation may be associated with other congenital anomalies; it occurs as a result of abnormal development of the first and second branchial arches and the first branchial cleft and most often occurs sporadically, although the disease may be manifested in different syndromes. Congenital aural atresia is considered one of the most difficult and challenging surgeries for the otologic surgeon. The goals of atresia surgery are to restore functional hearing, preferably without the requirement of a hearing aid, and to reconstruct a patent, infection-free external auditory canal. To optimize the surgical outcome, careful audiological and radiological evaluation of the patient should be performed preoperatively. Facial nerve dysfunction following atresia surgery has been reported to range from 0 to 11%. So the most compelling reason for atresia surgery is the fear of injuring an abnormally placed facial nerve. However, high resolution computed tomography of the temporal bone and 3-Dimention facial nerve reconstruction can provide important preoperative evaluation of facial nerve anomalies in aural atresia and stenosis.