WE‐DE‐206‐04: MRI Pulse Sequences ‐ Spin Echo, Gradient Echo, EPI, Non‐Cartesia

摘要

Magnetic resonance imaging (MRI) has become an essential part of clinical imaging due to its ability to render high soft tissue contrast. Instead of ionizing radiation, MRI use strong magnetic field, radio frequency waves and field gradients to create diagnostic useful images. It can be used to image the anatomy and also functional and physiological activities within the human body. Knowledge of the basic physical principles underlying MRI acquisition is vitally important to successful image production and proper image interpretation. This lecture will give an overview of the spin physics, imaging principle of MRI, the hardware of the MRI scanner, and various pulse sequences and their applications. It aims to provide a conceptual foundation to understand the image formation process of a clinical MRI scanner. Learning Objectives: 2. Understand the origin of the MR signal and contrast from the spin physics level. 3. Understand the main hardware components of a MRI scanner and their purposes 4. Understand steps for MR image formation including spatial encoding and image reconstruction 5. Understand the main kinds of MR pulse sequences and their characteristics.