术中超声在胰岛素瘤定位诊断中的价值

目的 探讨术中超声在胰岛素瘤定位诊断中的价值。方法 对２８例胰岛素瘤患者的术前Ｂ超，ＣＴ，ＭＲＩ和选择性动脉造影检查的定位资料进行分析，统计了术中超声与术中门诊，术中脾门静脉穿刺置管分段取血快速胰岛素测定（ＰＶＳ）３种方法对胰岛素瘤的定位准确率，并进行了比较研究。

The value of intraoperative ultrasonographic localization in insulinoma

Objective To evaluate the value of intraoperative ultrasonographic localization in insulinomas. Methods Preoperative data were analysed in 28 cases of insulinomas examined by ultrasonography, computed tomography(CT), magnetic resonance imaging(MRI) and arteriography. The accurate rates of intraoperative localization with intraoperative ultrasound(IOUS), intraoperative palpation and intraoperative selective portal venous sampling(PVS) were reported and compared with each other.Results The preoperative accurate rates of localizing insulinoma by ultrasonography, CT, MRI and arteriography were 28.6 %, 32.2 %, 41.7 %and 50.0 %, respectively. The accurate rate of IOUS was 92.3 %, of intraoperative palpation was 82.1 %, of intraoperative PVS was 92.3 %. Conclusions Intraoperative ultrasound not only shows the location of insulinoma accurately, but also provides the spatial relationship between tumour and vital structures, such as pancreatic duct, common bile duct, and critical blood vessels. It can thereby help surgeons choose appropriate surgical procedures and reduce the incidence of operative complications.