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目的 :比较 CT、MRI、DSA(血管造影 )三种影像学检查方法对肾癌诊断的影像学特点和意义。方法 :回顾性分析 1 60例经手术病理证实的肾细胞癌的 CT、MRI、DSA的表现 ,对比三者优缺点 ,找出各自的规律。结果 :三者均可以显示肿块的位置、大小和周围组织的关系及转移征像。结论 :显示肿块与周围组织关系 MRI优于 CT。“假包膜”为 MRI特征性表现。DSA与 CT增强表现的肿块密度改变不一致是因为静脉注射造影剂和直接动脉内注射造影剂两者的浓集时间与分布规律不一致有关
OBJECTIVE: To compare the imaging features and significance of the three imaging methods of CT, MRI and DSA in the diagnosis of renal cell carcinoma. Methods: The clinical manifestations of CT, MRI and DSA in 160 cases of renal cell carcinoma confirmed by surgery and pathology were retrospectively analyzed. The advantages and disadvantages of the three were compared to find their own rules. Results: All three showed the location of tumor, the relationship between the size and the surrounding tissues and metastatic signs. Conclusion: The MRI showed that the relationship between tumor and surrounding tissue was better than that of CT. “False capsule” is a characteristic manifestation of MRI. The inconsistencies in mass density changes between DSA and CT enhancement are due to inconsistencies in concentration time and distribution pattern between intravenous and direct intra-arterial injections of contrast media