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Title

Analysis of contrast-enhanced MR images to assess renal function

Authors
Michoux, N
Van Beers, B E
Published in Magma: Magnetic Resonance Materials in Physics, Biology and Medicine. 2006, vol. 19, no. 4, p. 167-79
Abstract The image analysis and kinetic modeling methods used in dynamic contrast-enhanced magnetic resonance imaging of the kidney are reviewed. Image analysis includes various techniques of coregistration and segmentation. Few methods have been completely implemented. Nevertheless, the use of coregistration may become a standard to decrease the effect of motion on abdominal images and improve the quality of the renal signals. Kinetic models are classified into three categories: enhancement-based, external and internal representations. Enhancement-based representations are limited to a basic analysis of the tracer concentration curves in the kidneys. Their relationship to the underlying physiology is complex and undefined. However, they can be used to evaluate the split renal function. External representations assess the kidney input and output. An external representation based on the up-slope of the renal enhancement to calculate the renal perfusion is commonly used because of its simplicity. In contrast, external representation based on deconvolution or identification methods remain underexploited. For glomerular filtration, an internal representation based on a two-compartmental model is mostly used. Internal representations based on multi-compartmental models describe the renal function in a more realistic way. Because of their numerical complexity, these models remain rarely used.
Keywords Glomerular Filtration RateHumansImage Processing, Computer-Assisted/methodsKidney/pathology/radiographyKineticsMagnetic Resonance Imaging/instrumentation/methodsModels, TheoreticalNephrons/pathologyTime Factors
Identifiers
PMID: 16906431
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Article (Published version) (400 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Structures
Research groups Imagerie cardiaque fonctionnelle (541)
Hypertension artérielle (128)
Cultures cellulaires et transplantations (519)
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MICHOUX, N et al. Analysis of contrast-enhanced MR images to assess renal function. In: Magma: Magnetic Resonance Materials in Physics, Biology and Medicine, 2006, vol. 19, n° 4, p. 167-79. https://archive-ouverte.unige.ch/unige:38720

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Deposited on : 2014-07-16

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