虚实结合的MRI实验实训项目开发与实践

Developing and Practice for the Combination of Virtual and Real Technologies in MRI Experimental Teaching

磁共振成像(MRI)是一门综合性学科,针对其原理的实验实训教学一直是难点。由于成本高昂、设备巨大、扫描参数固化,教学效率低等原因,直接使用MRI真机和小型磁共振教学实验仪一方面无法完全实现科学化、规范化和批量化的MRI技术实验教学,另一方面降低了操作的难度,局限了MRI的应用潜力,弱化了对学生图像质量的分析和控制能力培养。通过长期的教学实践和调研思考,提出了小型MRI模拟设备与虚拟软件相结合是实验教学的发展趋势,利用小型模拟设备进行结构教学,虚拟MRI实验实训软件进行原理教学,该软件能够模拟MRI的整个过程,正向与逆向学习相结合的方式使学生理解与掌握MRI相关原理。在此基础上,提出了"1+N+1"的虚实结合的实验实训教学模式,提高了教学实效。

It is a comprehensive subject for Magnetic Resonance Imaging（ MRI） Technology whose theory is very difficult to be understood by the students. As for those reasons,such as high-cost,huge-size,curing parameters,and the low efficiency of teaching,using the real devices or small magnetic resonance teaching experiment instruments are unable to achieve the scientific,standardized and mass of teaching on the one hand. Meanwhile,it also reduces the difficulty of operation,limits the application potential of MRI and weakens the students cultivation of the ability to analyze and control the quality of the image on the other hand. In this paper,through teaching practice and thinking for a long time,the authors presented that it is the development trend of experimental teaching by combining virtual teaching software with small MRI simulation equipment. Small MRI simulation equipment is used for the structure teaching of MRI equipment,and virtual teaching software is used for the theory teaching. The software is able to simulate the whole process of MRI,and makes the students understand and master relevant principle of MRI through forward and reverse learning. On this basis,the ＂1 ＋ N ＋ 1 ＂experimental teaching model of the virtuality and reality combination was presented and explained in this paper.