| 高波,郭启勇,侯阳,孙红彬.3.0T磁共振全心方法冠状动脉造影的初步评价[J].中国医学影像技术,2006,22(3):377~379 |
| 3.0T磁共振全心方法冠状动脉造影的初步评价 |
| Whole-heart turbo-field-echo coronary MR angiography at 3 Tesla: initial experience |
| 投稿时间：2005-12-12 修订日期：2006-01-25 |
| DOI： |
| 中文关键词: 磁共振血管造影术 冠状动脉 梯度回波序列 |
| 英文关键词:Magnetic resonance angiography Coronary arteries Turbo field echo |
| 基金项目: |
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| 中文摘要: |
| 目的 初步评价三维(3D)全心方法冠状动脉造影在3.0T磁共振应用的可行性及价值。方法 采用3D 分段k-空间快速梯度回波序列(turbo field echo, TFE),实时呼吸导航门控技术,心电向量(VCG)R波触发门控技术,在3.0T磁共振对12例健康志愿者进行磁共振冠状动脉造影(MRCA)检查。结果 左主干和左前降支(LM+LAD)、左旋支(LCX)及右冠状动脉(RCA)的血管长度(mm)分别为98±16、56±9、108±29;血管直径(mm)分别为2.6±0.4、2.4±0.3、2.6±0.3;左、右冠状动脉的信噪比(SNR)和强化噪声比(CNR)分别为35±12、19±6和23±5、18±3。结论 初步研究显示全心方法MRCA在3.0T磁共振是可行的,能够显示冠状动脉的远段和管径较小的分支血管,显示了增强的信噪比。全心方法使冠状动脉定位采集过程变得简单,易操作。 |
| 英文摘要: |
| Objective To evaluate the feasibility and the value of whole-heart magnetic resonance coronary angiography (MRCA) at 3 Tesla. Methods Whole-heart MRCA was performed in 12 healthy volunteers by using a three-dimensional segmented k-space gradient echo imaging sequence (turbo field echo) with free breathing. Visible vessel length, vessel diameter, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were determined for each vessel. Results The average length of the combined left main (LM) and left anterior descending branches (LAD) was (98±16) mm, of the left circumflex branch (LCX) was (56±9) mm, and of the right coronary (RCA) was (108±29) mm. The proximal diameters of the LAD, LCX, and RCA were (2.6±0.4) mm, (2.4±0.3) mm, and (2.6±0.3) mm, respectively. SNR and CNR were 35±12 and 19±6 for the left versus 23±5 and 18±3 for the right coronary system, respectively. Conclusion This preliminary study demonstrates that whole-heart MRCA is feasible at 3 Tesla. The main vessels, including their distal segments and smaller-diameter branching vessels can be displayed. |
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