磁共振成像Issue(5)：343-347,5.DOI:10.3969/j.issn.1674-8034.2014.05.006
非对比剂增强MR血管成像联合多反转空间标记脉冲技术在肺动脉成像的可行性研究
Non-contrast-enhanced MR angiography using spatial labeling with multiple inversion pulses sequence imaging in pulmonary artery:a feasibility study
摘要
Abstract
Objective:The purpose of this study was to demonstrate the feasibility of a non-contrast-enhanced magnetic resonance angiography (MRA) sequence, Multiple Inversion Pulses Sequence (SLEEK), used in pulmonary artery, and to explore the optimum blood-suppression inversion time (BSP-TI) for good image quality. Materials and 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 1.5 T MRI system for assessing pulmonary artery. The ability to present four segments (①pulmonary trunk.②main right and left pulmonary arteries.③interlobar arteries.④ segmental arteries bilaterally) were evaluated independently by two radiologists using a four-point scale. Relative signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) also were determined. Results:Thirteen volunteers were successfully performed SLEEK MRA, only one volunteer failed because of irregular respiration. The subjective image quality was signiifcantly better with BSP-TI 700 ms and 900 ms than with 500 ms, 1100 ms and 1300 ms (P<0.05). The CNR and relative SNR of pulmonary artery were significantly better with BSP-TI 700 ms than with 500 ms (P<0.05), though showed no signiifcantly better than with 900 ms, 1100 ms and 1300 ms (P>0.05), taking into the pulmonary venous contamination consideration (1100 ms 5/13, 1300ms 9/13), the image quality with BSP-TI 700 ms for pulmonary artery was signiifcantly better than with others. Conclusions:Performing non-contrast-enhanced MRA with SLEEK sequence can achieve clear vessel delineation both in central and peripheral pulmonary arteries with the BSP-TI of 700 ms.关键词
肺动脉/磁共振血管造影术Key words
pulmonary artery/Magnetic resonance angiography分类
医药卫生引用本文复制引用
孟晓岩,汤浩,王秋霞,李震,李晓娟,陈晓,胡军武,胡道予..非对比剂增强MR血管成像联合多反转空间标记脉冲技术在肺动脉成像的可行性研究[J].磁共振成像,2014,(5):343-347,5.基金项目
国家基金面上项目(编号81371524)；湖北省自然科学基金(编号2013CKB018) （编号81371524）
