ISMRM23 - Making It Work: Sequence Tutorials: TSE

ISMRM & ISMRT Annual Meeting & Exhibition • 03-08 June 2023 • Toronto, ON, Canada

Making It Work: Sequence Tutorials: TSE

Sunrise Course

ORGANIZERS: Mark Chiew, Anthony Christodoulou, Brian Hargreaves, Khin Tha

Thursday, 08 June 2023

718B

07:00 - 08:00

Moderators: Tosiaki Miyati

Skill Level: Basic to Intermediate

Session Number: S-Th-06

CME Credit

Session Number: S-Th-06

Overview
Pulse sequences and imaging techniques often evolve beyond their initial descriptions in the literature, adding refinements over time that are key to practical implementation. Each hour of this sunrise session presents a deep-dive tutorial into a specific technique from start to finish, highlighting the details that make each technique really work in practice.

Target Audience
Physicists, engineers, and clinicians looking to implement their own sequences or gain a more comprehensive understanding of how various MRI acquisitions work under the hood.

Educational Objectives
As a result of attending this course, participants should be able to:
- Identify the key components in a modern EPI acquisition and its corrections;
- Describe the characteristics of an MR fingerprinting acquisition and inference scheme;
- Explain the workings of a TSE/FSE/RARE acquisition and its various refinements; and
- Summarize the methods for ASL acquisitions and associated physiological modelling.

07:00		Turbo Spin Echo: Acquisition View Presentation Video John Mugler III Keywords: Image acquisition: Sequences This presentation provides an in-depth discussion of key features that make turbo/fast spin echo a robust imaging method, including configuration of the phase-encoding gradients, selection of the RF-pulse phases, effects of signal decay during the echo train, and flip angles other than 180° for the refocusing RF pulses.
07:30		Turbo Spin Echo: Refinement View Presentation Video Andreas Loening Keywords: Image acquisition: Sequences, Image acquisition: Fast imaging, Physics & Engineering: Pulse design Turbo (fast) spin echo (TSE/FSE) sequences compromise the core of many imaging protocols, but their use is so routine that we rarely think about how we can get the most out of our existing sequences and how we can leverage further sequence improvements developed by MRI researchers. This lecture will focus on refining TSE/FSE parameters for clinical applications in body, MSK, and neuro imaging. Additionally, practical aspects will be discussed including radiofrequency energy deposition (SAR) limits, motion and mitigation methods, trade-offs with low refocusing flip angles, fast recovery, and moving beyond 2-D cartesian acquisitions.