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磁共振成象(MRI Magnetic Resonance Imaging)的基本原理包括核磁共振(NMR)原理和成象理论两方面内容,本讲仅介绍一些最基本的概念。一、核磁共振核磁共振是物理学中一个重要领域,它有完整的理论体系和实验方法。这里我们仅从经典模型出发,介绍一些为了解核磁共振成象而必须掌握的最基本的概念。对于核磁共振的量子力学理论,我们只是引用了一些结论和术语,至于理论本身则不做介绍。另外,由于医用磁共振成象利用的只是人体中氢核(质子)的核磁共振现象,所以我们仅讨论氢核,当然文中介绍的基本概念对其它核磁矩不为零的核,如
The fundamentals of MRI Magnetic Resonance Imaging include both nuclear magnetic resonance (NMR) principles and imaging theory. Only a few basic concepts are introduced in this talk. First, nuclear magnetic resonance NMR is an important area of physics, it has a complete theoretical system and experimental methods. Here we start from the classic model only, introducing some of the most basic concepts that must be mastered in order to understand magnetic resonance imaging. For the nuclear magnetic resonance quantum mechanics theory, we only cite some conclusions and terms, as the theory itself is not introduced. In addition, since medical magnetic resonance imaging utilizes only the nuclear magnetic resonance (NMR) phenomenon of hydrogen nuclei (protons) in the human body, we only discuss hydrogen nuclei, of course, the basic concepts introduced in this paper are for other nuclei with non-zero nuclear magnetic moments such as