目的　评价颞骨CT影像对慢性中耳乳突炎诊治的临床意义。方法　通过对 10 1例慢性中耳乳突炎患者颞骨CT影像资料观察分析 ,包括乳突分型、病灶改变和解剖变异等影像资料进行统计。结果　乳突气化型 32 .6 7%、板障型 2 7.2 2 %、硬化型 2 3.76 %、混合型 13.37%、乳突术后 2 .97%。鼓窦、上鼓室、中鼓室及乳突低密度影出现率分别为 79.2 1%、6 5 .35 %、41.5 8%和 73.2 8%。听骨链、脑板和耳上棘骨质破坏分别为 37.6 2 %、3.96 %、16 .83 %。颈静脉球高位、乙状窦壁前移、乙状窦壁表浅和脑板低位发生率分别为 2 3 .76 %、14.85 %、1.98%、5 .94%。结论　颞骨冠状和轴位CT从不同角度显示中耳乳突的病理改变、解剖变异 ,对本病诊断及手术治疗有重要指导意义 Objective To evaluate the clinical significance of temporal bone CT in the diagnosis and treatment of chronic otitis media. Methods The temporal bone CT images of 101 patients with chronic otitis media were observed and analyzed, including mastoid typing, lesion changes and anatomical variations. Results Mastoid gasification type 32.67%, plate type 2 7.2 2%, sclerosis 2 3.76%, mixed type 13.37%, mastoid surgery 2.97%. The appearance rates of the sinus, upper tympanic cavity, middle tympanic cavity and mastoid were 79.2%, 65.35%, 41.5% and 73.2%, respectively. Ossicular chain, brain and ear spina bony destruction were 37.6 2%, 3.96%, 16.83%. High jugular bulb, sigmoid sinus wall advancement, sigmoid sinus wall superficial and low incidence of brain were 23.76%, 14.85%, 1.98%, 5.94%. Conclusion Coronal and axial CT of the temporal bone show the pathological changes and anatomic variations of the middle ear mastoid process from different angles, which is of great guiding significance for the diagnosis and surgical treatment of this disease