为您写高质量毕业论文和职称论文提供关于高质量方面毕业论文范文,与FIESTA序列扫描参数优化在胎羊中的应用相关论文范文集,包括关于高质量及图像及序列方面的论文题目、提纲、开题报告、文献综述、参考文献的大学硕士和本科毕业论文,是免费优秀的高质量论文范文。
【摘 要 】目的:优化快速稳态进动采集序列(FIESTA)扫描序列的参数,取得高质量的图像,便于MRI在人类胎儿扫描中的应用.方法:对2只胎羊行FIESTA序列扫描,变化各种扫描参数,比较不同参数下图像质量的差异.比较总结出相对理想的扫描参数.结果:总结得出相对理想的扫描参数为 TR:3.8ms,TE:1.4ms,层厚:7mm,间隔:1mm,矩阵:224×224,采集次数:2次.结论:通过胎羊动物模型,所取得的比较理想的扫描参数,能更好地运用于人类胎儿,将对诊断胎儿各种病变诊断有重要作用.
【关 键 词 】胎羊;MRI;快速类T2W序列;扫描参数
Scan parameters optimization of FIESTA sequence in the application study of fetal sheep
【Abstract】 Objective In order to enhance the image qualities, optimize scan parameters of FIESTA sequence were studied through fetal sheep for better use of fetal MRI in human. Materials and Methods Two fetal sheep were scanned by different parameters of FIESTA. Compared their specific absorption rate (SAR), imaging definition. Better parameters summarized after the study. Results The better parameters of FIESTA were TR:3.8ms,TEA