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Cardiac T 1 mapping: Techniques and applications

JOURNAL OF MAGNETIC RESONANCE IMAGING(2020)

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Abstract
A key advantage of cardiac magnetic resonance (CMR) imaging over other cardiac imaging modalities is the ability to perform detailed tissue characterization. CMR techniques continue to evolve, with advanced imaging sequences being developed to provide a reproducible, quantitative method of tissue interrogation. The T-1 mapping technique, a pixel-by-pixel method of quantifying T-1 relaxation time of soft tissues, has been shown to be promising for characterization of diseased myocardium in a wide variety of cardiomyopathies. In this review, we describe the basic principles and common techniques for T-1 mapping and its use for native T-1, postcontrast T-1, and extracellular volume mapping. We will review a wide range of clinical applications of the technique that can be used for identification and quantification of myocardial edema, fibrosis, and infiltrative diseases with illustrative clinical examples. In addition, we will explore the current limitations of the technique and describe some areas of ongoing development. Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019.
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Key words
cardiac magnetic resonance,T-1 mapping,ECV,magnetic resonance imaging
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