摘要
目的 :研究儿童期正常颞骨变异的发生率 ,CT表现及其临床意义。方法 :通过对 190位儿童的颞骨CT影像回顾性分析 ,将颞骨的正常变异归纳为 :①颈静脉球高位 ;②颈静脉球高位伴静脉球裸露 ;③颈静脉孔显著不对称 ;④乙状窦前位 ;⑤扩大的耳蜗导水管开口。结果 :上述正常颞骨变异在儿童期的发生率分别为 ( 1) 12 .6% ;( 2 ) 3 .7% ;( 3 ) 3 .1% ;( 4 ) 1.5 % ;( 5 ) 4.4%。结论 :儿童期颞骨正常变异较常见。在外科手术前对内耳、中耳及后颅窝正常变异的了解是非常重要的。
Objective:To investigate the incidence and appearance of the normal variations of the temporal bone on CT scans and its clinical significance in children.Methods:CT imaging of the temporal bones of 190 children was reviewed retrospectively.Results:The normal variations included:①a high positioned jugular bulb;②an incomplete bony covering of a high positioned jugular bulb;③severe asymmetry of the jugular foramen;④an anteriorly located sigmoid sinus;⑤a large cochlear aqueduct.The frequency of the variations mentioned above was as follows:(1) 12.6%;(2)3.7%;(3)3.1%;(4)1.5%;(5)4.4% respectively.Conclusion:Normal anatomical variations of temporal bone in children were common.It is important to recognise such variations before operations on the inner ear,middle ear and posterior fossa in children.
出处
《放射学实践》
2000年第5期353-355,共3页
Radiologic Practice
关键词
颞骨变异
CT
儿童
Temporal bone Variation Tomography,X ray computed
