论文标题
Ultrashort Echo时间和零回波时间MR成像及其在高磁场上的应用：文献调查
Ultrashort echo time and zero echo time MR imaging and their applications at high magnetic fields: A literature survey
论文作者
论文摘要
已经开发出UTE（超短回声时间）和中兴时间（零回波时间）序列，以检测来自无法通过常规MRI方法检测到的区域的短T2弛豫信号。由于固体和半固体组织中的高偶极 - 偶极相互作用，因此产生的回声时间根本不足以使用常规成像方法产生信号，通常会导致来自讨论的区域的空隙信号。通过应用这些技术，可以对固体和半固体区域进行成像，从而对临床成像产生深远的影响。高和超高的场强（UHF）在提供更好的敏感性和MR成像特异性方面具有至关重要的优势。当与UTE和中兴序列结合使用时，图像可以恢复空隙信号以及备受改善的信号质量。为了进一步，从各种研究工具中获得了辅助数据，以进一步验证研究，同时解决该方法的缺点。已经发现，UTE和中兴序列以及某些技术（例如定性成像和新轨迹）对准确的图像描述肌肉骨骼系统，神经系统，肺成像和牙科成像至关重要。
UTE (Ultrashort Echo Time) and ZTE (Zero Echo Time) sequences have been developed to detect short T2 relaxation signals coming from regions that are unable to be detected by conventional MRI methods. Due to the high dipole-dipole interactions in solid and semi-solid tissues, the echo time generated is simply not enough to produce a signal using conventional imaging method, often leading to void signal coming from the discussed areas. By the application of these techniques, solid and semi-solid areas can be imaged which can have a profound impact in clinical imaging. High and Ultra-high field strength (UHF) provides a vital advantage in providing better sensitivity and specificity of MR imaging. When coupled with the UTE and ZTE sequences, the image can recover void signals as well as a much-improved signal quality. To further this strategy, secondary data from various research tools was obtained to further validate the research while addressing the drawbacks to this approach. It was found that UTE and ZTE sequences coupled with some techniques such as qualitative imaging and new trajectories are very crucial for accurate image depiction of the areas of the musculoskeletal system, neural system, lung imaging and dental imaging.
