...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Academic radiology >Visualization of Lenticulostriate Arteries at 3T: Optimization of Slice-selective Off-resonance Sinc Pulse-prepared TOF-MRA and Its Comparison with Flow-sensitive Black-blood MRA
【24h】

Visualization of Lenticulostriate Arteries at 3T: Optimization of Slice-selective Off-resonance Sinc Pulse-prepared TOF-MRA and Its Comparison with Flow-sensitive Black-blood MRA

机译：晶状体动脉在3T的可视化：切片选择性非共振Sinc脉冲制备的TOF-MRA的优化及其与血流敏感性黑血MRA的比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Rationale and Objectives: To optimize visualization of lenticulostriate artery (LSA) by time-of-flight (TOF) magnetic resonance angiography (MRA) with slice-selective off-resonance sinc (SORS) saturation transfer contrast pulses and to compare capability of optimal TOF-MRA and flow-sensitive black-blood (FSBB) MRA to visualize the LSA at 3T. Materials and Methods: This study was approved by the local ethics committee, and written informed consent was obtained from all the subjects. TOF-MRA was optimized in 20 subjects by comparing SORS pulses of different flip angles: 0, 400°, and 750°. Numbers of LSAs were counted. The optimal TOF-MRA was compared to FSBB-MRA in 21 subjects. Images were evaluated by the numbers and length of visualized LSAs. Results: LSAs were significantly more visualized in TOF-MRA with SORS pulses of 400° than others (P < .003). When the optimal TOF-MRA was compared to FSBB-MRA, the visualization of LSA using FSBB (mean branch numbers 11.1, 95% confidence interval (CI) 10.0-12.1; mean total length 236 mm, 95% CI 210-263 mm) was significantly better than using TOF (4.7, 95% CI 4.1-5.3; 78 mm, 95% CI 67-89 mm) for both numbers and length of the LSA (P < .0001). Conclusions: LSA visualization was best with 400° SORS pulses for TOF-MRA but FSBB-MRA was better than TOF-MRA, which indicates its clinical potential to investigate the LSA on a 3T magnetic resonance imaging.
机译：原理和目的：通过飞行时间（TOF）磁共振血管造影（MRA）和切片选择非共振Sinc（SORS）饱和转移造影剂脉冲来优化小腿动脉（LSA）的可视化，并比较最佳TOF的能力-MRA和流量敏感的黑血（FSBB）MRA，以在3T时可视化LSA。资料和方法：本研究得到当地伦理委员会的批准，并从所有受试者中获得书面知情同意。通过比较不同翻转角（0、400°和750°）的SORS脉冲，优化了20位受试者的TOF-MRA。计算了LSA的数量。在21位受试者中，将最佳TOF-MRA与FSBB-MRA进行了比较。通过可视化LSA的数量和长度评估图像。结果：在400°SORS脉冲下，TOF-MRA中的LSA显着高于其他（P <.003）。将最佳TOF-MRA与FSBB-MRA进行比较时，使用FSBB可视化LSA（平均分支数11.1，95％置信区间（CI）10.0-12.1;平均总长度236 mm，95％CI 210-263 mm） LSA的数量和长度均明显优于使用TOF（4.7，95％CI 4.1-5.3; 78 mm，95％CI 67-89 mm）（P <.0001）。结论：对于TOF-MRA，LSA可视化效果最好为400°SORS脉冲，但FSBB-MRA优于TOF-MRA，这表明其在3T磁共振成像上研究LSA的临床潜力。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号