ISMRM22 - Vascular Anomalies & Lymphatic Disorders

Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting • 07-12 May 2022 • London, UK

Vascular Anomalies & Lymphatic Disorders

Weekday Course

ORGANIZERS: Daniel Moses, Elizabeth Hecht, Mary-Louise Greer

Monday, 09 May 2022

ICC Capital Suite 14-16

17:00 - 19:00

Moderators:
Vascular Anomalies: Martin Prince
Lymphatic Disorders: Jeffrey Maki

Skill Level: Basic to Advanced

Session Number: M-07

Session Number: M-07

Overview
This session gives an overview of vascular malformations and lymphatic disorders and the role of MRI in their investigation and management. This is further explored through case-based review. The multidisciplinary facets and practicalities of providing an MR lymphography service will also be discussed.

Target Audience
Interventional and diagnostic radiologists and radiology trainees; clinicians involved in the management of vascular malformations and lymphatic disorders including cardiologists and cardiac, vascular, and plastic surgeons; MRI technologists; MRI physicists and research scientists with an interest in vascular malformations and lymphatic disorders.

Educational Objectives
As a result of attending this course, participants should be able to:
- Describe the nomenclature and classification system of vascular malformations;
- Recognize different vascular malformations and lymphatic disorders on MRI; and
- Summarize the challenges and resources required in implementing an MR Lymphography Service.

	Vascular Anomalies
17:00		Classification of Vascular Anomalies & Role of MRI View the Presentation Oscar Navarro Vascular anomalies are common in children. Using the classification proposed by the International Society for the Study of Vascular Anomalies (ISSVA), they can be categorized into two large groups: vascular tumors and vascular malformations. MRI is used in a minority of cases but provides useful information for diagnosis, treatment monitoring and assessment of associated anomalies, especially overgrowth. MRI relies on the use of T1 and T2 (usually with fat suppression) sequences as well as contrast-enhanced angiography and contrast-enhanced fat-suppressed T1 sequences. Correlation with clinical information is crucial for appropriate interpretation of MRI findings.
17:30		Case-Based Review of Vascular Anomalies No Video Available Maliha Sadick Introduction:Vascular Malformations represent a rare disease. The most common vascular anomalies include venous (VM), lymphatic (LM), arteriovenous (AVM) and combined malformations (CM).MRI in Slow-Flow and Fast-Flow Vascular Malformations:VMs are hyperintense lesions in Multiplanar Turbo Inversion Recovery Magnitude (TIRM) or T2-weighted TurboSpinEcho (T2 TSE) imaging. In late T1Vibe the full extent and patency of the VM is displayed.LMs appear as hyperintense cysts with/without septation in T2-weighted TSE sequences.AVMS are characterized by flow voids. MR-Time-resolved Angiography With Interleaved Stochastic Trajectories is mandatory for depiction of flow dynamics and shunting.Conclusion:MRI-morphology of vascular malformations decides on treatment.
	Lymphatic Disorders
18:00		Overview of Lymphatic Disorders View the Presentation Susanna Guerrini
18:30		In Practice: MR Lymphography Service & Case Review View the Presentation David Biko Imaging of the central lymphatic system can be performed using non-contrast T2 weighted lymphangiography and dynamic contrast enhanced lymphangiography (DCMRL) via an intranodal, intrahepatic, or intramesenteric approach. This talk will describe lymphatic anatomy, imaging techniques, and lymphatic flow disorders such as plastic bronchitis and protein losing enteropathy.