Description of flow phenomena in magnetic resonance imaging

The magnetic resonance (MR) signal from the hydrogen nuclei of blood is not only determined by the MR parameters T1, T2 and proton density, but is strongly dependent on the movement of the protons. Magnetic resonance imaging (MRI) offers therefore the possibility to visualize the distribution of mov...

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Bibliographic Details
Published in:	Diagnostic imaging in clinical medicine Vol. 55; no. 1-2; p. 37
Main Authors:	Deimling, M, Mueller, E, Lenz, G, Barth, K, Fritschy, P, Seiderer, M, Reinhardt, E R
Format:	Journal Article
Language:	English
Published:	Switzerland 1986
Subjects:	Blood Circulation Blood Flow Velocity Blood Vessels - pathology Blood Vessels - physiology Humans Magnetic Resonance Spectroscopy Mathematics Models, Cardiovascular Models, Structural
Online Access:	Get more information
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Summary:	The magnetic resonance (MR) signal from the hydrogen nuclei of blood is not only determined by the MR parameters T1, T2 and proton density, but is strongly dependent on the movement of the protons. Magnetic resonance imaging (MRI) offers therefore the possibility to visualize the distribution of moving spins, especially blood flow, noninvasively and without contrast agents; moreover, the velocity of the moving spins can be quantified. Flow phenomena in MRI are a pretentious field because the complicated hydrodynamics of the living system is coded in the MR signal; therefore, an understanding of the underlying physical principle of the MR signal is required to interpret and extract flow information from the image. However, rather simple theoretical and experimental models of fluid transport in vessels allow to explain the main features of various effects observed in images.
ISSN:	0254-881X