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磁共振LAVA序列及其重建对周围型胆管细胞癌的诊断价值
余帮龙,母其文,张福洲,祝林
0
(川北医学院第二临床医学院·南充市中心医院磁共振室;南充市中心医院小龙分院)
摘要:
【摘要】 目的 探讨磁共振LAVA序列及其重建在周围型胆管细胞癌中的诊断价值。方法 回顾分析36例周围型胆管细胞癌(IHPCC)的影像资料。均作CT平扫及增强、MRI常规平扫检查并运用MRI中的LAVA序列作动态增强扫描,观察CT及MRI平扫图像特征和各期强化特点。结果 36例周围型胆管细胞癌CT平扫均呈低或稍低密度,MRI平扫其T2WI均呈高或稍高信号,其中22例可见病灶中心斑片状或条状较低信号,经CT发现16例周围胆管扩张,T2WI则发现19例病灶周围胆管扩张,而经LAVA及其重建发现22例胆管扩张。MRI中32例在平衡期强化向中心扩大。仅4例在强化平衡期未向中心扩展,而在CT增强中,有6例无向心性强化。包含LAVA序列及其重建的MRI诊断符合率达到91.6%。结论 MRI的LAVA序列及其重建可以发现较细的胆管扩张,其扫描速度快,可很好地显示周围型胆管细胞癌的强化特点。是诊断周围型胆管细胞癌的有效方法。
关键词:  胆管细胞癌  CT  MRI  LAVA序列  诊断
DOI:
基金项目:
The value of MRI LAVA sequence and its reconstruction in diagnosing intrahepatic peripheral cholangiocarcinom
YU Banglong,MU Qiwen,ZHANG Xiaoming,ZHU Lin
(Department of Magnetic Resonance Imaging, The Second Affiliated Hospital of North Sichuan Medical College;Xiaolong Branch of Nanchong Central Hospital, Nanchong)
Abstract:
【Abstract】 Objective To investigate the value of MRI LAVA sequence in diagnosing intrahepatic peripheral cholangiocarcinoma (IHPCC).Methods The imaging data of 36 patients with intrahepatic peripheral cholangiocarcinoma were analyzed. Both CT and MRI were performed plain and dynamic enhanced in all patients. The MRI dynamic enhanced were performed by LAVA.Results CT nonenhanced scanning showed that the lesions of IHPCC was approxinately equal density or low density. On the other hands, MRI nonenhanced scanning showed all lesions showed mixed hyperintensity at main body on T2WI in 36 patients,and low signals at centre area were found in 21 patients. The bile duct dilatation of The lesion was showed on T2WI in 19 patients and 16 on CT, The bile duct dilatation of the lesion was showed on LAVA dynamic enhanced MRI in 22 patients, in MRI thirtytwo patients extended enhancement scope to center in portal and delayed phase, but no central enhancement in delayed phase in 4 patients. The accuracy of MRI with LAVA was 91.6%. Conclusion Thin bile duct dilatation of the lesions can be showed at MRI LAVA sequence or its reconstruction, more faster scaning speed, more better showed of the enhanced features of intrahepatic peripheral cholangiocarcinoma (IHPCC). The MRI LAVA sequence is an effective method in the diagnosis of intrahepatic peripheral cholangiocarcinoma.
Key words:  Cholangiocarcinoma  MRI  Diagnosis

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