鼻骨正常变异和鼻骨骨折的CT诊断

目的比较CT和X线平片对鼻骨骨折的诊断价值,提高对鼻骨正常变异的认识。方法80例鼻骨骨折病人,均做鼻骨CT横断面、冠状面和正侧位X线平片检查。结果CT全部诊断正确,阳性率为100%,X线平片诊断65例,阳性率为81%。80例CT诊断的骨折中,单纯性鼻骨骨折35例(占44%),粉碎性骨折12例(占15%),复合性骨折33例(占41%)。在18例健康志愿者的鼻骨CT检查中,发现2例鼻额缝缝间骨和1例鼻骨尖的“鹰嘴样”变异,其发生率为17%(3/18)。而CT均清晰显示骨折存在;18例健康志愿者中有3例存在不同类型的鼻骨变异。结论CT扫描在鼻骨正常变异和鼻骨骨折诊断中具有重要的临床价值。

CT diagnosis of nasal bone normal variation and nasal bone fracture

Objective To compare the nasal bone diagnostic value of CT scan with X-ray plain film,and enhance the learning to nasal bone normal variation.Methods Eighty cases of patients with nasal bone fracture were collected,all having nasal bone CT films scanned cross-sectionally and coronary-sectionally and lateral radiography.Results All CT films revealed nasal bone fracture correctly,positive rate was 100%,and X-ray plain film diagnosed 65 cases,positive rate was 81%.In 80 cases of nasal bone fractures(account for 44%),12 cases of comminuted fractures(account for 15%) and 33 cases of compound fractures(account for 41%).In 18 cases of healthy volunteers with nasal bone CT films,two cases of sutural bone in nasal-frons bone suture and one case of "olecranon" variation in apex of nasal bone were found,incidence was 17%(3/18).Conclusion CT scan is the best imaging method in diagnosing nasal bone fracture,better than X-ray plain film.To learn nasal bone normal variation,we can lessen the misdiagnosis of nasal bone fracture.