ISMRM 25th Annual Meeting & Exhibition • 22-27 April 2017 • Honolulu, HI, USA
Sunrise Educational Session: It Doesn’t Have to Be That Way: Non-Traditional Acquisition
Sunrise Session

ORGANIZERS: Michael S. Hansen, Ph.D. & Joshua D. Trzasko, Ph.D.

Tuesday, 25 April 2017
Room 315  07:00 - 07:50 Moderators: Michael Hansen, Sebastian Kozerke

Skill Level: Intermediate
Slack Channel: #e_crosscutting
Session Number: STu04

Overview
Most clinical MRI is performed using slightly variations of standard technology. However, in the research domain, many groups are now pushing the limits of what MRI technology can do, identifying new realms that it can be applied to, and violating the classic dogmas to enable wholly new imaging capabilities. In this course, we will explore some of these MRI technology extremes, investigate their technical foundations, and identify what potential impact they could have on clinical practice.

Target Audience
Physicists and Engineers who are interested in pushing the limits of MRI technology and exploring non-traditional uses of the latter.

Educational Objectives
Upon completion of this course, participants should be able to:

-Identify and describe MRI techniques that employ non-traditional hardware setups (e.g., magnets, gradients);
-Identify and describe MRI techniques that employ non-traditional data acquisition strategies (e.g., RF, sampling); and
-Identify and describe MRI techniques that employ non-traditional data processing strategies (e.g., artifact-to-information, assisted diagnosis).


07:00
 RF
David Brunner
Excitation and detection of NMR on human subjects is intrinsically limited by the interaction of the RF fields and the subject. Therefore most research focuses on the improvements of RF coils. Moving the RF frontend electronics to the coil however has a major impact on the technology and applies to all coils. Furthermore, the lack of measurements during transmission and switching represents the major gap in the detection of the spin state which poses problems for acquisition of short-lived coherences and spin dynamics under RF irradiation. Methods for reduction and omitting this dead time will be discussed.
07:25
 Data
Dong Liang
Data acquisition is an important step in magnetic resonance imaging (MRI). Acquisition time and image quality heavily depend on how we sample k-space and how we reconstruct images from the acquired data. In other words, data acquisition and image reconstruction are inseparable. Usually, new imaging theory raises the request on novel sampling scheme. The first part of this talk will briefly review traditional data acquisition connected with traditional reconstruction methods. The second part of the talk will discuss non-traditional acquisition motivated by advanced reconstruction ideas such as compressed sensing (CS), low-rank and deep learning based methods.
07:50
 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.