ISMRM 24th Annual Meeting & Exhibition • 07-13 May 2016 • Singapore |
Weekend Educational Course: Cardiovascular MRI: Vascular Flow & Angiography
Skill Level: Basic to Intermediate
Organizers: Daniel B. Ennis, Ph.D. & Harald Kramer, M.D.
Saturday 07 May 2016 |
Overview
An introduction to the vascular MRI examination. The sessions will review the basic principles and applications of contrast and non-contrast enhanced MRA techniques from both a technical and clinical perspective. The course will also explain the differences in both technique and application of static and dynamic MRA compared to 2D and 4D flow imaging.
Target Audience
Clinicians, scientists and engineers who wish to discriminate between the various techniques available for vascular imaging and their appropriate application in clinical practice.
Educational Objectives
Upon completion of this course, participants should be able to:
- Describe and critique the basic vascular MRI examination from a clinical and technical perspective and evaluate how their own practice could be improved;
- Critically assess the various MRA and flow imaging techniques and reflect on their current clinical practice; and
- Compare and contrast between angiographic and flow imaging techniques and reflect on their own practice.
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PROGRAM |
Moderator:
Martin Graves |
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The Basic Vascular MRI Exam |
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14:00
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Contrast & Non-contrast Enhanced Methods - Technical
Perspectives - Permission Withheld
Mitsue Miyazaki1
1Toshiba Medical Research Institution, Vernon
Hills, IL, United States
Both contrast enhanced (CE) and non-contrast enhanced (NCE)
MRA techniques are introduced. In CE-MRA, developing
trends including bolus timing estimation, temporal and
spatial resolution improvement, and low dose gadolinium
(Gd) MRA are revisited. In NCE-MRA, recent developments,
including inflow, flow-dependent, and spin labeling
techniques are introduced. Clinical applications of
these NCE-MRA techniques are also demonstrated.
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14:30
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Contrast & Non-contrast Enhanced Methods - Clinical
Applications
James Carr1
1NORTHWESTERN
This presentation will demonstrate the technical and
clinical applications of contrast enhanced and
non-contrast magnetic resonance angiography (MRA). MRA
is routinely used to evaluate the vasculature in a
non–invasive fashion. Contrast enhanced MRA can be
implemented as a conventional timed flow arrest protocol
or as time resolved dynamic imaging. The technical
aspects of both of these approaches will be described in
detail. Several different Gadolinium based contrast
agents are routinely used for CEMRA including both
extracellular and blood pool agents. Methods for optimal
utilization of contrast agents for MRA will be
described. Because of the risk of NSF with gadolinium
use in patients with renal failure, there has been
renewed interest in non contrast MRA techniques. Several
of these NCMRA approaches will be discussed. Through a
series of case presentations, this talk will attempt to
illustrate the optimal use of all of these techniques in
clinical practice. At the end of this lecture, attendees
should understand the basic technical principles for
CEMRA and NCMRA and will also be more familiar with the
appropriate clinical indications for using these
techniques.
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15:00
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Break & Meet the Teachers |
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The Advanced Vascular MRI Exam |
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15:15
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Definition of Terms: Static & Dynamic CE-MRA & 2D/4D Flow
Oliver Wieben1
1Depts. of Medical Physics & Radiology,
University of Wisconsin-Madison, Madison, WI, United
States
Over the last decades, many methodological advances have
been introduced to expand the capabilities of anatomical
and functional MRA beyond the basic MR acquisition
principles. These innovations provide new opportunities
and challenges. Here we will review several key concepts
with a special focus on their terminology, protocol
choices available to the clinical and research user, and
implications on the resulting images in the context of
contrast-enhanced MRA and flow MRI.
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15:45
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Practical Challenges of MRA & Flow
Alex J Barker1
1Radiology, Northwestern University, Chicago,
IL, United States
MRA and phase contrast flow measurements involve the
measurement of moving bodies, specifically blood (or in
some cases CSF). Motion will produces artifact in MR
images. While some of these artifacts are advantageous
for the purpose of MRA (TOF) and flow images,
unanticipated motion will degrade the quality of the
exam. This educational section will discuss the
practical considerations and challenges when
protocolling MRA and flow measurements.
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16:15
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Break & Meet the Teachers |
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16:30
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Clinical Applications of
MRA
Winfried Willinek1
1Department of Radiology, Neuroradiology,
Sonography and Nuclear Medicine
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17:00
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Clinical Applications of 2D & 4D Flow
Alejandro Roldan-Alzate
Conventional flow-sensitive magnetic resonance imaging
(MRI) using two-dimensional (2D) slice selection,
cardiac gating, and phase contrast (PC) velocity
encoding in one direction is an excellent quantitative
alternative to measure blood flow in different vascular
territories. Recent advances allow for the acquisition
of MRI data sets with three-directional velocity
encoding over a 3D volume throughout the cardiac cycle
in clinically feasible scan times of 20 minutes and
less. This presentation will discuss clinical
applications of 2D and 4D flow MRI.
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17:30
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Adjournment & Meet the
Teachers |
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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. |