门静脉海绵样变的高场MRI诊断分析.docVIP

门静脉海绵样变的高场MRI诊断分析 文档信息 主题： 关于“医学心理学”中“医学影像”的参考范文。 属性： Doc-029134，doc格式，正文9182字。质优实惠，欢迎下载！ 说明： 作为医学资料、临床医学资料的写作参考资料，提供解决怎么写及格式等相关问题。 适用： 作为文章写作的参考文献，解决如何写好实用应用文、正确编写文案格式、内容摘取等相关工作。 正文 门静脉海绵样变的高场MRI诊断分析 文1：门静脉海绵样变的高场MRI诊断分析 high field mri diagnosis of cavernous traformation of portal vein ding qing-guo， jia chuan-hai，lu yong-ming，et al. the imaging center of the 2nd people’s hospital， changshu jiangsu province 215500，china [abstract] objective to investigate mri manifestio of cavernous traformation of portal vein(ctpv)，and to evaluate the mri value in diagnosing ctpv. methods 16 patients with ctpv proved by surgico- pathology underwent mr plain scan，dynamic contrast enhancement and 5 patients were performed with dynamic contrast-enhanced magnetic resonance angiography(dce-mra).the mri features of ctpv were reviewed retrospectively. results the etiology of 16 cases with ctpv was showed in obstruction of portal vein and its branches and abundant collateral branch vei around it was exhibited in mr plain scan. abnormal perfusion of liver parenchyma in 7 cases could be seen in arterial phase during mr dynamic enhancement. the abnormal collateral branch vei were enhanced during the portal above-mentioned alteratio were displayed more obvious on biliary duct was irregular stenosis in 6 cases. conclusion ctpv has characteristic mri manifestio. mri can play an important role in diagnosing ctpv and definiting etiolog of ctpv。 [key words] portal vein;cavernous traformation;magnetic resonance imaging;mr angiography 门静脉海绵样变(cavernous traformation of portal vein，ctpv)是指门静脉主干和/或分支因不同病因导致完全或部分阻塞后，在其周围形成大量迂曲扩张的小静脉形成类似“海绵状”丰富的侧枝循环。，在ctpv中的应用受到重视[1-4，7]。笔者收集经临床手术病理证实的16例ctpv，分析其mri表现，旨在探讨mri在ctpv中的诊断价值。 材料与方法 16例ctpv，男11例，女5例，年龄33～72岁，平均52.岁，形成ctpv的病因包括肝硬化6例，肝细胞癌、胆管细胞癌、肝脏转移瘤、胰腺炎、肝移植各2例。所有病例均经临床手术病理证实。 mri检查采用ge signa infinity excite ⅱ echospeed超导磁共振成像设备，使用8通道体线圈。均作了横断位呼吸触发快速自旋回波(fse)t2wi压脂序列扫描，参数：tte=8571ms/，层厚7～8mm，间隔1mm，激励次数4。二维快速扰相梯度回波序列成像(2d fspgr)，参数：tte=190～215ms/，层厚与间隔同t2wi，翻