摘要
[摘要 ]目的 评价 3.0T磁共振在胰腺神经内分泌肿瘤诊断中的应用价值。 方法 回顾性分析 6例经手术病理证实的胰腺内分泌肿瘤的患者，比较 T1WI， T2WI， DWI和动态增强四个序列对病灶的显示情况。 结果 6例患者中，其中 1例有 5个病灶，共 10例病灶。病灶最大径平均值为 2.12 cm，在 T1WI中 3例低信号， 5例稍低信号， 2例等信号。在 T2WI中 6例高信号， 2例稍高信号， 2例信号不均匀，表现为等 /高混杂信号； DWI中，去除囊变坏死等部分， 10例均为高信号。动态增强方式有以下几种： 6例病灶整个动态扫描周围表现为均匀轻中度强化， 2例病灶动脉期中度或明显均匀强化，门脉和延迟期有所下降但仍高于周围正常胰腺实质信号， 2例病灶中央明显囊变坏死，囊变坏死区无强化，周围呈持续性环状强化。 结论 多数胰岛细胞瘤 TIWI上表现为等低信号， T2WI上表现为高信号， DWI上均表现为高信号，动态增强上 MRI动脉期明显强化。
[关键词 ]胰腺肿瘤；神经内分泌肿瘤；磁共振成像；扩散加权成像
[Abstract] Objective To evaluate the value of 3.0T MR in the diagnosis of pancreatic neuroendocrine tumors. Methods six patients with pancreatic endocrine tumor confirmed by operation and pathology were analyzed retrospectively. The results of T1WI, T2WI, DWI and dynamic enhancement were compared. Results among the 6 patients, 1 had 5 lesions, 10 lesions in total. The average diameter of the lesions was 2.12 cm. In T1WI, 3 cases were low signal, 5 cases were slightly low signal, 2 cases were equal signal. In T2WI, there were 6 cases of high signal, 2 cases of slightly high signal, 2 cases of uneven signal, showing equal / high hybrid signal; in DWI, 10 cases were all high signal. The dynamic enhancement methods were as follows: 6 cases showed homogeneous light to moderate enhancement around the whole dynamic scanning, 2 cases showed moderate or obvious homogeneous enhancement in the arterial phase, decreased in the portal vein and delay phase, but still higher than the signal of surrounding normal pancreatic parenchyma, 2 cases showed obvious cystic necrosis in the center, no enhancement in the cystic necrosis area, and continuous annular enhancement around. Conclusion most islet cell tumors show isolow signal on Tiwi, high signal on T2WI and high signal on DWI. On dynamic contrast-enhanced MRI, the arterial phase is significantly enhanced.
出版日期
2020年01月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
