磁振造影的發展為近代醫學影像的一大躍進，並成為基礎研究和臨床醫學中不可或缺的角色。本文由磁振造影的基本原理出發，並依序介紹目前磁振造影的最新發展，包括灌流性磁振造影、擴散性磁振造影及功能性磁振造影等，並探討其於中樞神經之應用。

The improvement in magnetic resonance imaging (MRI) technique has been the milestone of medical imaging in recent years. MRI becomes an indispensable tool in basic research and clinical medicine. Herein we introduce the basic principles of MRI and the newly developed techniques, including the perfusion, diffusion, and functional MRI, followed by their current applications in the central nervous system.