【摘要】 目的探讨64层螺旋CT三期增强扫描和三维重组在胰岛细胞瘤中的诊断价值。资料与方法回顾性分析12例经手术病理证实的胰岛细胞瘤患者的64层螺旋CT表现,重点分析动脉期及静脉期强化特点。结果12例胰岛细胞瘤均为单发,全部位于胰头,平扫8例与胰腺呈等密度,4例可见钙化,部分可见局限性隆起,但与正常胰腺分界不清。增强后动脉期呈明显均匀强化,CT值较正常胰腺平均高75～85 HU,静脉期强化程度较动脉期略下降,CT值较正常胰腺平均高47～57 HU。增强后瘤体边界与正常胰腺分界清晰。结论64层螺旋CT三期增强扫描及三维重组在胰岛细胞瘤诊断中有重要价值。更多还原

【Abstract】 Objective To explore the diagnosis value of 64-slice spiral CT three enhanced scanning and three-dimensional reconstruction in the islet cell tumor.Materials and Methods 12 cases of islet cell tumor proved by operation and pathology were scanned by 64-slice spiral CT.The CT characteristics of arterial and venous phase enhancment were analyzed mainly.Results The lesion was single and located at the pancreatic head in every case.8 cases had isodense with the pancreas.Calcifications were showed in 4 cases at non-enhanced scan.Some lesions bulged outward without clear boundary.Significantly homogeneous enhancement,average 75-85 HU increase,were showed at arterial phase.Average 47~ 57Hu decrease was showed at venous phase enhancement.The tumors boundary showed more clearly after enhancement.Conclusion The diagnosis of 64-slice spiral CT three enhanced scanning and three-dimensional reconstruction has important value in the diagnosis of islet cell tumor.更多还原