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《Journal of Binzhou Medical University》 2017-06
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Non-contrast-enhanced MR angiography using NATIVE TrueFISP sequence imaging in portalvein:a feasibility study

LIU Hairong;CHEN Liang;TIAN Chunmei;LIU Yujia;ZHANG Lin;Department of Radiology,Binzhou Medical University Hospital;Department of Paediatrics,Binzhou Medical University Hospital;  
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.
【Fund】: 山东省医药卫生科技发展计划项目(2014WSB 30011)
【CateGory Index】: R445.2;R575
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