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目的 :比较动脉激发静脉采血样(arterial stimulation venous sampling,ASVS)与CT能谱成像对胰岛素瘤术前定位诊断的准确率。方法:22例经手术、病理证实的胰岛素瘤病例同时行ASVS和CT能谱成像检查,记录临床资料、肿瘤数量、部位和大小,比较这2种方法定位诊断的准确率。结果:病理证实一共24个病灶,ASVS和CT能谱成像均正确诊断22例中的21例,定位诊断准确率均为95.5%。ASVS误诊1例由于解剖变异,CT能谱成像误诊1例由于肿瘤外生性生长。结论:CT能谱成像具有与ASVS同样的定位诊断准确率,ASVS可用于其他检查方法均为阴性的可疑病例或需明确肿瘤病灶的分泌功能之时。
Objective: To compare the diagnostic accuracy of arterial stimulation venous sampling (ASVS) and CT imaging in the diagnosis of insulinomas. Methods: Twenty-two cases of insulinoma confirmed by pathology and pathology were examined by ASVS and CT spectral imaging at the same time. The clinical data, the number of tumor, the location and the size of tumor were recorded. The diagnostic accuracy of these two methods was compared. Results: A total of 24 lesions were confirmed by pathology. Twenty-one of 22 cases were correctly diagnosed by ASVS and CT, and the accuracy of localization diagnosis was 95.5%. 1 case of ASVS misdiagnosis due to anatomical variation, 1 case of misdiagnosis of CT spectrum due to tumor growth. CONCLUSIONS: CT spectral imaging has the same diagnostic accuracy as ASVS. ASVS can be used in other suspected negative cases or when the secretory function of tumor lesions needs to be clarified.