摘要
目的基于将放射状k空间填充及压缩感知技术融合于mDixon技术开发一种新型MR血管成像(MRA)序列(3D mDixon-MRA),观察其用于颈部动脉成像的可行性。方法前瞻性收集45例疑诊颈部动脉疾病患者,以3D时间飞跃法采集颈部动脉MRA(3D TOF-MRA)及3D mDixon-MRA,比较颈总动脉根部和中远段、椎动脉根部和中远段及颈内外动脉根部在2种图像中的信噪比(SNR)和对比度噪声比(CNR),以及2种图像质量主观评分的差异。结果3D mDixon-MRA所示各动脉SNR均显著高于3D TOF-MRA(P均<0.01)。颈总动脉根部CNR在2种图像中的差异无统计学意义(P=0.13),其余动脉在3D mDixon-MRA中的CNR均显著高于3D TOF-MRA(P均<0.01)。颈总动脉根部、椎动脉根部及椎动脉中远段在3D mDixon-MRA中的主观评分均高于3D TOF-MRA(P均<0.05),其余动脉在2种图像中的主观评分差异均无统计学意义(P均>0.05)。结论3D mDixon-MRA序列可用于颈部动脉成像,有利于提高图像质量、缩短扫描时间。
Objective To develop a novel MR angiography sequence(3D mDixon-MRA)based on integrating k-space radial sampling and compressed sensing technology into mDixon technique,and to explore its feasibility for application in cervical artery imaging.Methods Forty-five patients with suspected cervical artery diseases were prospectively enrolled,and 3D time-of-flight cervical artery MRA(3D TOF-MRA)and 3D mDixon-MRA were performed.Signal-to-noise ratio(SNR)and contrast-to-nosie ratio(CNR)of root and mid-distal of the common carotid artery,root and mid-distal of the vertebral artery,root of internal and external carotid arteries,as well as the subjective scores of imaging quality were compared between 2 kinds of images.Results SNR of each artery on 3D mDixon-MRA was significantly higher than that on 3D TOF-MRA(all P<0.01).No significant difference of CNR of common carotid artery root was found between 3D mDixon-MRA and 3D TOF-MRA(P=0.13),while CNR of the other arteries were significantly higher on 3D mDixon-MRA than those on 3D TOF-MRA(all P<0.01).The subjective scores of common carotid artery root,the root and mid-distal of vertebral artery on 3D mDixon-MRA were significantly higher than those on 3D TOF-MRA(all P<0.05),while no significant difference of subjective scores of the rest arteries was found between 2 kinds of images(all P>0.05).Conclusion 3D mDixon-MRA sequence could be used for cervical artery imaging,which could improve imaging quality and shorten scanning time.
作者
康泰山
林良杰
吴健
林建忠
徐丽娜
KANG Taishan;LIN Liangjie;WU Jian;LIN Jianzhong;XU Lina(Department of MRI,Zhongshan Hospital of Xiamen University,Xiamen 361004,China;Xiamen Radiological Control Center,Xiamen 361004,China;PhilipsInvestment Co.,LTD.Beijing Branch,Beijing 100016,China;Department of Electronic Science,School of Electronic Science and Engineering,Xiamen University,Xiamen 361005,China)
出处
《中国医学影像技术》
CSCD
北大核心
2023年第4期592-596,共5页
Chinese Journal of Medical Imaging Technology
基金
中国博士后科学基金会面上项目(2020M671947)。
关键词
颈动脉疾病
磁共振血管成像
水脂分离技术
压缩感知
carotid artery diseases
magnetic resonance angiography
mDixon technology
compressed sensing
