【摘要】 目的:探讨对称性顶骨凹陷症的临床发病率、分型、CT表现及其诊断价值。方法:对94例对称性顶骨凹陷症患者CT图像进行回顾性分析,平均年龄78岁,89例行CT平扫,5例增强扫描。均采用脑窗及骨窗观察。结果:总人群发病率3.0‰,50岁以上人群发病率9.9‰。男女比例1∶2.6。双侧对称性顶骨凹陷症75例,非对称性顶骨凹陷症16例,单侧顶骨凹陷症3例。CT表现为顶骨外板凹陷、板障变薄、内板完整,头皮软组织正常。结论:CT对颅骨骨质异常敏感,结合临床,能明显提高对称性顶骨凹陷症的检出率。更多还原

【Abstract】 Objective:To discuss the clinical incidence rate,CT classification and features as well as CT diagnostic value for symmetrical impression of parietal bones.Methods:CT scans of 94 cases of symmetrical parietal bone impression were retrospectively analyzed.The average age of patients was 78 years.CT plain scans were performed in 89 cases and enhancing scans were undergone in 5 cases.All the images were read using both brain and bone windows.Results:The incidence rate of symmetrical parietal bone impression in all the whole population of patients having been examined with cranial CT was 3.0‰,and in patients of age over 50, the incidence rate was 9.9‰.The sex ratio of male to female patients was 1∶2.6. There were 75 cases with symmetrical parietal bone impression, 16 cases with asymmetrical ones and 3 cases with only a unilateral one. On CT images, the outer table of the parietal bones showed symmetrical impression,the diploe revealed thinner and the inner table was intact.Nothing was abnormal in the relative scalp and soft tissue.Conclusion:CT sensitivity was very high in detecting the abnormality of bony structures of the skull.Obviously,the detection rate of symmetrical parietal bone impression could be improved by CT examination in combination with clinical information of the cases.更多还原