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Inicio Radiología (English Edition) A practical introduction to the hemodynamic analysis of the cardiovascular syste...
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Vol. 56. Issue 6.
Pages 485-495 (November - December 2014)
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Vol. 56. Issue 6.
Pages 485-495 (November - December 2014)
Update in Radiology
A practical introduction to the hemodynamic analysis of the cardiovascular system with 4D Flow MRI
Introducción práctica al análisis hemodinámico del sistema cardiovascular mediante la técnica «4D Flow»
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J.A. Pineda Zapataa,
Corresponding author
julian.pineda21@gmail.com

Corresponding author.
, J.A. Delgado de Bedouta, S. Rascovsky Ramíreza, C. Bustamantea, S. Mesab, V.D. Calvo Betancura
a Grupo de Investigación, Instituto de Alta Tecnologi¿a Médica (IATM), Medellín, Antioquia, Colombia
b Universidad CES, Medellín, Antioquia, Colombia
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Table 1. Acquisition parameters for the 4D Flow modality based on the area of study.
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Abstract

The 4D Flow MRI technique provides a three-dimensional representation of blood flow over time, making it possible to evaluate the hemodynamics of the cardiovascular system both qualitatively and quantitatively. In this article, we describe the application of the 4D Flow technique in a 3T scanner; in addition to the technical parameters, we discuss the advantages and limitations of the technique and its possible clinical applications. We used 4D Flow MRI to study different body areas (chest, abdomen, neck, and head) in 10 volunteers. We obtained 3D representations of the patterns of flow and quantitative hemodynamic measurements. The technique makes it possible to evaluate the pattern of blood flow in large and midsize vessels without the need for exogenous contrast agents.

Keywords:
4D Flow
Cardiovascular magnetic resonance imaging
Phase contrast angiography
Hemodynamics
Blood flow
Resumen

La técnica de resonancia magnética 4D Flow permite evaluar cualitativa y cuantitativamente la hemodinámica del sistema cardiovascular representando en tres dimensiones los patrones de flujo sanguíneo en el tiempo y cuantificando variables hemodinámicas. En este trabajo describimos la técnica 4D Flow en un equipo de resonancia de 3T y adicionalmente se exponen, además de los parámetros técnicos, las ventajas, las limitaciones y las posibles aplicaciones clínicas. Para esto estudiamos a diez voluntarios con la técnica 4D Flow en diferentes áreas corporales (tórax, abdomen, cuello y cráneo) con la que obtuvimos representaciones tridimensionales de los patrones del flujo y medidas cuantitativas hemodinámicas. La técnica permite evaluar los patrones de flujo sanguíneo en vasos grandes y medianos sin la necesidad de contrastes exógenos.

Palabras clave:
4D Flow
Resonancia magnética cardiovascular
Angiografía con contraste de fase
Hemodinámica
Flujo sanguíneo

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