磁敏感成像技术在肝脏局灶性病变的初步应用

李秋云; 肖恩华; 李华兵; 卞读军; 贺忠

中国临床医学影像杂志 ›› 2011, Vol. 22 ›› Issue (2) : 100-104.

论著

磁敏感成像技术在肝脏局灶性病变的初步应用

李秋云，肖恩华，李华兵，卞读军，贺忠

作者信息 +

Clinic application of susceptibility weighted imaging in the discovery and diagnosis of focal liver lesions

LI Qiu-yun, XIAO En-hua, LI Hua-bing, BIAN Du-jun, HE Zhong

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摘要

目的：探讨磁敏感加权成像（SWI）在肝脏局灶性病变内部结构的显示能力及其鉴别诊断中的应用价值。方法：搜集18例经临床及影像证实肝脏病变包括血管畸形、肝细胞癌、转移瘤、血管瘤以及肝囊肿患者共25个肝局灶性病变行常规T1WI、T2WI及SWI扫描，并将其SWI图像与常规MRI序列进行比较。18例均同时行增强扫描，1例动静脉畸形同时行MRA检查，1例血管瘤动态增强后再次行SWI检查。结果：1例血管畸形SWI能较常规平扫、增强及3D MRA更清楚显示其异常静脉血管形态；4例肝细胞癌、3例胆管细胞癌及2例转移瘤，SWI均能显示病灶内瘤静脉及血液降解产物；5例肝血管瘤及3例肝囊肿，SWI均显示病灶呈均匀稍高信号，病灶较大者邻近静脉受压。结论：SWI在显示肝脏静脉性血管畸形、肿瘤相关静脉结构等方面优于常规MR序列，对肝脏局灶性病变有一定鉴别诊断价值，是研究肝脏局灶性病变内部结构的一种新的方法。

Abstract

Objective: To investigate the value of susceptibility weighted imaging in the discovery and diagnosis of focal liver lesions. Methods: Eighteen patients with 25 focal liver lesions were collected, all of them were proved by clinic and imaging. It included liver vascular malformation(n=1), hepatocellular carcinoma(n=4), cholangiocellular carcinoma(n=3), metastatic tumor in liver(n=2), liver haemangioma(n=5), and liver cyst(n=3). MR imaging were performed with conventional T1WI, T2WI, SWI and dynamic Gd-DTPA contrast enhanced MRI. The SWI imagings were compared to conventional sequence imagings. 3D MRA were performed in liver vascular malformation(n=1) and post-gadolinium enhanced SWI performed in one liver haemangioma. Results: In liver vascular malformation(n=1), SWI was better than conventional MRI and 3D MRA in discovering abnormal veins. SWI could discover tumor vascular structure and degradation products of blood in hepatocellular carcinoma(n=4), cholangiocellular carcinoma(n=3) and metastatic tumor in liver(n=2). SWI showed homogeneous slight hyper-signal in liver haemangioma(n=5) and liver cyst(n=3), and in comparatively large lesion of which the adjacent vein was compressed. Conclusion: SWI surpassed conventional MRI sequences in discovering liver venous vascular malformation and vascular structure in tumor. SWI is very helpful in differential diagnosis of focal liver lesions. It is a new approach to investigate the internal structures of focal liver lesions.

导出引用

李秋云;肖恩华;李华兵;卞读军;贺忠. 磁敏感成像技术在肝脏局灶性病变的初步应用[J]. 中国临床医学影像杂志. 2011, 22(2): 100-104

LI Qiu-yun;XIAO En-hua;LI Hua-bing;BIAN Du-jun;HE Zhong. Clinic application of susceptibility weighted imaging in the discovery and diagnosis of focal liver lesions[J]. Journal of China Clinic Medical Imaging. 2011, 22(2): 100-104

中图分类号： Ｒ575 Ｒ445.2