导航技术三维对比剂增强磁共振

冠状动脉成像
李晓兵 史晓晞 秦明明 张继斌 王晓周 刘仁坚 罗健君
翁小琳 蒯建萍 许建铭 邰晓霞
【摘要】 目的 评价导航技术三维对比剂增强磁共振冠状动脉成像的应用价值。方法 应用
导航技术三维对比剂增强磁共振血管成像方法, 对20 例受检者分别进行左、右冠状动脉成像, 经后处
理获得左、右冠状动脉血管图像。应用信噪比和对比噪声比评价增强前后的冠状动脉图像, 并对冠状
动脉主干及其主要分支的显示情况进行评价。结果 ( 1 ) 对获得成功的18 例冠状动脉图像进行评
价, 增强前冠状动脉图像的信噪比为26. 37 ±7. 02, 对比噪声比为14. 76 ±6. 97; 增强后冠状动脉图像
的信噪比为38. 87 ±11. 62, 对比噪声比为33. 72 ±10. 80, 经统计学比较, 信噪比和对比噪声比增强前
后的差异有统计学意义( t = 2. 91, 4. 62; P < 0. 05) 。( 2 ) 对比剂增强后左、右及左回旋支冠状动脉近
中段的显示率为100% , 远侧段的显示率分别为94. 4%、88. 8% 、77. 8% 。结论 导航技术三维对比
剂增强磁共振冠状动脉成像有较高的信噪比和对比噪声比, 应用于临床尚需进一步的对照研究。
【关键词】 冠状血管; 磁共振血管造影术; 造影剂
Corona ry a rtery imaging wit h r eal-time na vigator thr ee-dimensional contra st enhanced MR cor onar y
a ngiogra phy LI Xiao-bing, SHI Xia o-xi, QIN Ming-ming, ZHANG J i-bin, WANG Xiao-zhou, LIU Renjia
n, LUO J ian-jun, WENG Xiao-lin, KUAI J ia n-ping, XU Jian-ming, TAI Xiao-xia. Department of
Radiology, Suzhou Municipa l Hospital ( Hea dquarters) , Suzhou 215002, China
【Abstra ct 】 Objective To evaluate the value of real-time navigator three-dimensional contrast
enhanced MR coronary angiography. Methods Real-time navigator three-dimensional contrast enhanced
MR coronary angiography was performed in twenty cases, the major coronary arteries were acquired after
post-processing. The images of the major coronary arteries were evaluated with signal-to-noise ratio ( SNR)
and contrast-to-noise ratio ( CNR) , and observe the demonstration of the major coronary arteries and
branches. Results Of twenty cases, real-time navigator three-dimensional contrast enhanced MR coronary
angiography were successfully performed in eighteen cases . SNR and CNR were 26. 37 ±7. 02, 14. 76 ±6. 97
before contrast enhancement vs 38. 87 ±11. 62, 33. 72 ±10. 80 after contrast enhancement, respectively.
Statistical differences were significant between them( P < 0. 05) . The demonstration of proximal and middle
of the major coronary branches, including left coronary ( left main branch and left anterior descending
branches) , right coronary and left circumflex branch were 100% , and distal of them were 94. 4% , 88. 8% ,
and 77. 8% , respectively. Conclusion Better SNR and CNR can be achieved with real-time navigator
three-dimensional contrast enhanced MR coronary angiography, more researches should be done before
application in clinics.
【Key wor ds】 Coronary vessels ; Magnetic resonance angiography; Contrast media

导航技术三维对比剂增强磁共振.rar