ISMRM23 - Vascular Imaging: Viewing Structure & Function

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

Vascular Imaging: Viewing Structure & Function

Weekend Course

ORGANIZERS: Christopher François, Tarique Hussain, Xihai Zhao

Sunday, 04 June 2023

718A

07:45 - 11:30

Moderators:
Non-Contrast-Enhanced MRA: Ioannis Koktzoglou & Mitsue Miyazaki
Contrast-Enhanced MRA: Jeffrey Maki & Hideki Ota
Vessel Wall & Multiparametric Vascular Imaging: Zhensen Chen & David Saloner
Assessing Vascular Function with 4D Flow MRI: Julio Garcia Flores & Zhongzhao Teng

Skill Level: Basic to Advanced

Session Number: WE-18

CME Credit

Session Number: WE-18

Overview
This course is going to introduce the fundamentals and clinical applications of basic and advanced vascular imaging techniques, including MRA, vessel wall imaging, and non-cardiac 4D flow imaging. In this course, the following 4 modules were designed from viewing vascular structure to function: non-contrast MRA; contrast-enhanced MRA; vessel wall and multiparametric vascular imaging; and non-cardiac 4D Flow. We will bring together experts in the field of vascular imaging to give lectures and panel discussions at each module.

Target Audience
This course will target radiologists, MR physicists, MR technicians, cardiologists, neurologists, vascular surgeons, and physicians in vascular intervention.

Educational Objectives
As a result of attending this course, participants should be able to:
- Explain how vascular imaging techniques work;
- Identify new vascular imaging techniques;
- Describe how to perform standard vascular imaging in clinical settings;
- Recall the current guidelines and consensus in vascular imaging; and
- State the benefits of novel contrast agents in CE-MRA, such as Ferumoxytol.

		Contrast-Enhanced MRA
07:45		CE-MRA vs. CTA: Which Exam to Perform View Presentation Video Giles Roditi Keywords: Cardiovascular: Cardiovascular The aim of this presentation is to highlight the issues that will clinically dictate whether to perform CE-MRA or CTA, providing a framework to approach the problem illustrated with case studies
08:10		CE-MRA with Novel Contrast Agents View Presentation Video Peng Hu Keywords: Cardiovascular: Vascular In this talk, latest developments in CE-MRA will be discussed, with a special emphasis on novel contrast agents such as ferumoxytol, which has gained more attention in the past five years within the CE-MRA community. Both technical pulse sequence optimizations and clinical examples of ferumoxytol CEMRA will be discussed for different body sites. Cardiac applications will also be discussed.
		Non-Contrast-Enhanced MRA
08:35		History & Current Status of Non-Contrast-Enhanced MRA Techniques View Presentation Video Martin Graves Keywords: Cardiovascular: Angiography Non-contrast-enhanced magnetic resonance angiography (NCE-MRA) has evolved considerably since its inception in the mid-1980s. The technique uses flow-related signal changes to visualize the vasculature, without contrast agents. Initially, time-of-flight (TOF) and phase-contrast (PC) were the most common methods. However, limitations such as flow-related artifacts and slow acquisition times, have led to the development of techniques like flow-sensitive dephasing (FSD), balanced steady-state free precession (bSSFP) and quiescent-interval slice-selective (QISS). These methods have shown promise in improving image quality and reducing scan times. NCE-MRA is currently used in clinical practice, particularly for patients with renal insufficiency or contraindications to contrast-enhanced imaging.
09:00		The Clinical Value of Non-Contrast-Enhanced MRA View Presentation Video Ruth Lim Keywords: Cardiovascular: Vascular, Cardiovascular: Angiography Non contrast enhanced MRA (NC MRA) has been available for many years with multiple techniques developed in response to the discovery of Nephrogenic Systemic Fibrosis. When to consider NC MRA will be discussed, including advantages and challenges. Techniques including flow-dependent, flow independent and phase sensitive techniques will be reviewed, as well as where within the body they are best applied. Clinical examples applying these techniques will be discussed.
09:25		Break & Meet the Teachers
		Vessel Wall & Multiparametric Vascular Imaging
09:50		Multicontrast MR Vessel Wall Imaging View Presentation Video Niranjan Balu Keywords: Cardiovascular: Atherosclerosis This course will discuss the fundamental principles underlying the need for multi-contrast MRI in the context of vessel wall pathology. The target audience is researchers and clinicians who are interested in understanding the basics of vessel wall MRI acquisition, processing and interpretation. As a result of this course, participant will be able to describe the MR sequences specifically used for vessel wall MRI, the interpretation of vessel wall components particularly with reference to atherosclerosis and be able to adapt the protocol and methods to other vessel wall pathologies and different vascular beds.
10:15		Multiparametric & Multitasking Vessel Wall Imaging View Presentation Video Haikun Qi Keywords: Cardiovascular: Vascular Multiparametric and Multitasking Vessel Wall MRI are a set of innovative MRI techniques that are transforming the way of vessel MRI by providing more efficient and motion-robust imaging than traditional methods. These techniques involve advanced MRI sequence design to allow for the acquisition of multiple imaging parameters in a single scan. This presentation will introduce the recent advancements in vascular imaging using multicontrast and multiparametric MRI. Finally, the current challenges for clinical translation and potential solutions will be discussed.
		Assessing Vascular Function with 4D Flow MRI
10:40		4D Flow of the Aorta View Presentation Video Liliana Ma Keywords: Cardiovascular: Hemodynamics, Cardiovascular: Vascular, Cardiovascular: Blood This talk will discuss the application of 4D flow MRI to the aorta. It will cover the acquisition of a 4D flow data set and relevant post-processing steps used to go from raw images to potentially useful data. In addition, qualitative visualization, quantitative analysis, common clinical parameters, as well as advanced analyses will also be discussed.
11:05		Intracranial 4D Flow View Presentation Video Rui Li Keywords: Cardiovascular: Vascular With the technical development and the clinical validation of 4D Flow MRI, it is doable in routine clinical diagnosis with valuable hemodynamic information.