此项研究的目的是评价高分辨CT对判定听骨链状况的实用性和局限性。研究方法是用CT诊断出26名慢性中耳炎或先天性听小骨畸形的患者,用术中所见来进行鉴定。槌骨小头、砧骨体和砧骨长脚的全部病变,高分辨CT都可以发现。但是高分辨CT对诊断槌骨柄和镫骨上 The purpose of this study was to evaluate the utility and limitations of high-resolution CT in determining the condition of the ossicular chain. The study was based on the CT diagnosis of 26 patients with chronic otitis media or congenital hearing loss of the ossicles, identified by intraoperative findings. The entire lesion of the mallet, the incus body and the incus long leg can be found by high resolution CT. However, high-resolution CT was used to diagnose mallet stems and stapes