【摘要】 目的熟悉高位心包上隐窝的CT表现及其对诊断与鉴别诊断的意义。方法收集我院2008-2010年的75例胸部螺旋CT检查患者,对其图像进行观察,对明确或怀疑有高位心包上隐窝者进行1.5mm薄层重建和多平面重建,经2名有经验的医师最后确认,统计高位心包上隐窝的出现率,描述其表现并测量其大小。结果确认为高位心包上隐窝的患者共有14例。①心包上隐窝的形态:在横轴位上表现为右侧气管旁区圆形、卵圆形、半月形、三角形水样密度结构,冠、矢状位呈长条带状,上部盲端呈囊袋状,往下紧贴无名动脉和升主动脉且与常见部位心包上隐窝相连。②心包上隐窝的大小:横轴位,平均长径和短径分别为20mm和13mm;矢状位或冠状位最长径平均53mm。结论 CT薄层和多平面重建可更好地观察高位心包上隐窝,从而更好地与纵隔病变相鉴别。更多还原

【Abstract】 Objective To clarify the CT features and clinical significance of the high-riding superior pericardial recess(HSPR).Methods The spiral CT scans of chest in 75 patients were retrospectively evaluated.Multiplanar reconstruction of chest and 1.5 mm thin-section CT image of suspected HSPR patients were performed.The prevalence and appearance of HSPR were determined.Results Fourteen cases were diagnosed as HSPR.①HSPR were manifested in the right paratracheal region as a triangular,round,oval or semilunar structure,as a long band-like structure along the lateral wall of right brachiocephalic artery,and the ascending aorta was with a upper sac-like blind end in coronal and sagittal reformations which was contiguous with the superior pericardial recess on caudal images.②The average diameters of the short-axis and long-axis of HSPR were 13 mm and 20 mm respectively,with the mean vertical extension of 53 mm.Conclusion The thin-section CT images and multiplanar reformations are better to depict the HSPR,and can be helpful to distinguish confidently from abnormal findings such as lymphadenopathy and cystic lesions.更多还原