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Techniques in the Assessment of Cardiovascular Blood Flow and Velocity

  • Michael MarklEmail author
Chapter
Part of the Contemporary Cardiology book series (CONCARD)

Abstract

The intrinsic motion sensitivity of MRI, which is exploited in phase-contrast (PC) MRI, can be used to measure and quantify in vivo blood flow simultaneously with morphological data within a single examination. In clinical routine, the PC-MRI acquisition is typically synchronized with the cardiac cycle (CINE imaging) and based on methods that resolve two spatial dimensions (2D) in individual slices and encode the component of time-resolved velocity-directed perpendicularly to the 2D plane. This approach allows measurements of volume flow, systolic peak velocity, as well as regurgitant and shunt flows in congenital and acquired heart disease. A number of advanced flow MR imaging techniques that build on the fundamental principles of PC-MRI have recently been introduced, including real-time flow imaging for the evaluation of flow changes on short time scales and 4D flow MRI for the comprehensive analysis of complex time-resolved 3D blood flow characteristics. This chapter reviews the fundamental principles, imaging techniques, and applications of 2D CINE PC-MRI and provides and introduction and discussion of advanced flow MR imaging techniques.

Keywords

Blood flow Phase-contrast MRI Velocity encoding Velocity mapping 4D flow MRI 

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Northwestern University Feinberg School of MedicineDepartment of Radiology and Biomedical EngineeringChicagoUSA

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