| 1. | Nmr imaging equipment
核磁共振成像装置 |
| 2. | Using permanent magnet as the main magnet , which is the core of nmr imaging device , is the current trend
主磁体是该装置的核心部分，采用永磁型主磁体是当前的重要发展方向。 |
| 3. | The device of nmr imaging is a sort of equipment of advanced medical diagnosis , which can acquire the transected scanning imaging of interior tissue of human body
核磁共振成像装置是一种先进的医疗诊断设备，可用来获得人体内部组织的断层扫描图像。 |
| 4. | Imagine if the mri scanner had been known by the name that is often used by researchers , the nmr imaging device : the nuclear magnetic resonance machine
可以想象，如果mri扫描仪为人所共知的仅仅是其经常被研究人员所使用的名字nmr图像装置，也就是核磁共振设备。 |
| 5. | The experiments of fluidsaturated rock show that the nmr imaging technology has many advantages in analyzing the pore structure , fluid distribution , fracture identification and flooding process
通过岩心核磁共振成像基础实验研究，认为核磁成像岩心分析技术在孔隙分布、流体分布、裂缝识别、驱替过程研究等方面具有突出的优势。 |
| 6. | At last , the experiment for the mini - device of nmr imaging , which is finished together with the relative company , proves the efficiency of the optimized schemes of pole shape presented in this thesis
最后，本文以一种小型核磁共振成像装置作为实例，并与有关单位合作，用实验对优化方案进行了验证，证明了本文提出方法的有效性。 |
| 7. | At the beginning the thesis indicates the crux of nmr imaging is the homogeneity of the static magnetic field through introducing the basic principle of nmr imaging and presents the requirement of the satisfying imaging
首先，本文介绍了核磁共振成像的基本原理，指出样品区静磁场的均匀度是核磁共振成像的关键所在，并给出了满足成像要求的条件。 |
| 8. | The permanent main magnet is mainly the developing direction through analyzing the advantages and disadvantages between three sort of main magnets : superconductor , routine and permanence . aiming at the different types of the permanent main magnet with edge effects , which ca n ' t reach the demand of nmr imaging , numerical method of magnetic field computation and the theory of shape optimization is applied
因此，本文应用磁场数值分析和形状优化的理论和方法，探索了大空间内均匀磁场的技术，目标是在核磁共振成像主磁体己设计好的基础上，对极靴的形状进行优化设计，尽量扩大样品区磁场均匀的范围。 |
