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多层重叠薄块和最佳倾斜非饱和激发磁共振血管造影在脑动静脉畸形诊断中的应用

Study of MOTSA and TONE MRA in cerebral AVM
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摘要  目的:分析脑动静脉畸形(arteriovenousmalformations,AVM)的三维时间飞越法磁共振血管造影(3D-TimeofFlightMagneticResonanceAngiography,3D-TOFMRA)结合多层重叠薄块(multi pleoverlappingthinslabacquisition,MOTSA)和最佳倾斜非饱和激发(tiltedoptimizednonsaturatingexcita tion,TONE)技术的磁共振成像表现,探讨其应用价值。方法:对150例AVM患者分别行SE序列磁共振成像(MRI),3D-TOFMRA结合MOTSA和TONE检查。结果:MRI及3D-TOFMRA都能显示AVM的瘤巢,AVM的继发改变MRI能很好地显示,MRA能显示AVM的三维解剖结构。结论:MOTSA结合TONEMRA是无创性评价脑AVM的有效方法,结合MRI可提高诊断准确率,为临床治疗方案的选择提供帮助并能对治疗效果进行客观评价。 Aim: To analyze the MRA features of cerebral AVM with MOTSA and TONE 3D-TOF, and discuss its diagnostic value. Methods: One hundred and fifty case were studied respectively with SE MRI sequence, 3D-TOF MRA with MOTSA and TONE on a GE signa echo speed 1.5T scanner. Results: The nets of AVM could be seen on both MRI and MRA, the secondary changes of AVM were well defined on MRI and the three-dimensional anatomy of AVM could be demonstrated clearly on MRA. Conclusion: MRA with MOTSA and TONE has a definitive value in noninvasive evaluation of AVM, when combined with MRI, can improve the diagnostic accuracy, and provide essential information for the decision of treatments.
出处 《暨南大学学报(自然科学与医学版)》 CAS CSCD 2003年第6期49-53,共5页 Journal of Jinan University(Natural Science & Medicine Edition)
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