ISMRM 25th Annual Meeting & Exhibition • 22-27 April 2017 • Honolulu, HI, USA

Educational Session: MR Physics & Techniques for Clinicians

Educational Course

ORGANIZERS: Marcus T. Alley, Ph.D. & Bernd Jung, Ph.D.

Tuesday, 25 April 2017
Room 316BC  08:15 - 10:15 Moderators: Michael Ith, Oliver Wieben

Skill Level: Basic to Intermediate

Slack Channel: #e_crosscutting
Session Number: Tu02


Overview
This two-hour course will be a basic and comprehensive review of MRI physics and techniques. The presentations will be non-mathematical and suitable for clinicians and physicists new to the field. The course will cover pulse sequence design and timing diagrams for basic MR imaging techniques such as spin-echo imaging, gradient-echo imaging, and fast spin-echo imaging. The course will be a basic and comprehensive review of MRI physics and techniques. The presentations will be non-mathematical and suitable for clinicians and physicists new to the field. The course will cover the basic principles of MR physics (signal generation, encoding, and relaxation) and k-space.

Target Audience
This course is primarily designed for the clinician who will benefit from an understanding of the "how’s and why’s" of MR imaging. While it requires no prior experience with MR, those with some familiarity and experience will also benefit. Those interested may include: radiologists and clinicians relatively new to MR imaging (including residents and fellows), experienced radiologists and clinicians wanting a refresher course in MR physics, and physicists and engineers wanting an introduction to the field.

Educational Objectives
Upon completion of this course, participants should be able to:
-Recognize the basic physics and properties of pulse sequences based upon spin and gradient echoes;
-Describe fast spin-echo imaging and applications of basic MR pulse sequences; and
-Design MR imaging protocols for diagnostic applications considering image contrast, spatial resolution, acquisition time, signal-to-noise ratio, and artifacts.



08:15
Spin Echo Imaging
Valentina Taviani
The spin echo pulse sequence is one of the most important pulse sequences in MRI. Fast spin echo imaging is routinely used due to its robustness to susceptibility variations and local field inhomogeneities, as well as for its ability to produce excellent T1, T2 and PD images. The aim of this lecture is to describe the basic physical principles governing spin echo imaging and to illustrate the effect of key imaging parameters, such as TE, TR and ETL (echo train length) on image contrast.

09:15
Gradient Echo Imaging
Armin Nagel
Magnetic resonance imaging (MRI) techniques can usually be classified into spin-echo (SE) and gradient-echo (GRE) pulse sequences. In this presentation, the basic physical principles of GRE imaging, as well as different mechanisms to generate image contrast will be explained. Differences between SE and GRE MRI will be discussed. Additionally, the influence of different pulse sequence parameters (e.g. echo time, repetition time, flip angle; as well as spoiling techniques and preparation pulses) on the image contrast will be covered. Clinical applications of GRE imaging techniques will be shown exemplarily.

10:15
Adjournment
 
 

The International Society for Magnetic Resonance in Medicine is accredited by the Accreditation Council for
Continuing Medical Education to provide continuing medical education for physicians.