摘要
目的评估3.0T MR NATIVE TrueFISP序列在肝门静脉成像中应用的可行性。方法对14名健康志愿者通过NATIVE TrueFISP序列应用不同的血流抑制翻转时间(BSP-TI)分别进行肝门静脉成像。扫描后的图像由2名放射学诊断医师对门静脉及其分支的显示情况进行主观评分,并比较不同BSP-TI下肝脏门静脉主干、左支、右支的对比信噪比(CNR)及信号信噪比(SNR)。结果 14名志愿者均成功完成检查。BSP-TI设置值依次为800、1 000、1 200、1 400ms,随着TI增加,门静脉远端分支的信号强度逐渐增强。在BSP-TI=1 200ms时,肝脏门静脉主干、左支、右支的CNR及SNR最高。结论3.0T MRI NATIVE TrueFISP序列可以实现非对比剂肝门静脉血管成像,BSP-TI为1 200ms时成像效果较好。
Objective The purpose of this study was to demonstrate the feasibility of a non-contrast-enhanced magnetic resonance angiography（MRA）sequence,NATIVE TrueFISP,used in portal vein,and to explore the optimum blood-suppression inversion time（BSP-TI）for good image quality.Methods Fourteen healthy volunteers who had no contraindications to MRI and no recent health problems or surgeries were recruited in the study.All subjects were performed at a 3.0 T MRI system for assessing portal vein.Imaging quality of hepatic portal vein was evaluated independently by two radiologists using a five-point scale.Relative signal-to-noise ratio（SNR）and contrast-to-noise ratio（CNR）also were determined.Results Fourteen volunteers were successfully performed NATIVE TrueFISP portal venography.The value of BSP-TI setting was 800,1 000,1 200,and 1400 s,and with BSP-TI increasing,the signal strength of the distal branch of portal vein was gradually enhanced.And when BSP-TI was 1200 ms,the CNR and SNR of the main hepatic portal vein,the left branch and the right branch were the highest.Conclusion Performing non-contrast-enhanced MRA with NATIVE TrueFISP sequence can achieve clear vessel delineation both for branches and for trunk with the BSP-TI of 1200 ms.
作者
刘海荣
陈亮
田春梅
刘宇佳
张林
LIU Hairong;CHEN Liang;TIAN Chunmei;LIU Yujia;ZHANG Lin(Department of Radiology, Binzhou Medical University Hospital, Binzhou 256603, P. R. China;Department of Paediatrics,Binzhou Medical University Hospital)
出处
《滨州医学院学报》
2017年第6期431-434,共4页
Journal of Binzhou Medical University
基金
山东省医药卫生科技发展计划项目(2014WSB 30011)
关键词
磁共振血管成像
真稳态自由进动序列
非对比增强
门静脉成像
magnetic resonance angiography, true steady-state free-precession, non-contrast enhancement, porta~ venography
