New criteria for assessing fit quality in dynamic contrast-enhancedT1-weighted MRI for perfusion and permeability imaging - Archive ouverte HAL Access content directly
Journal Articles Magnetic Resonance in Medicine Year : 2005

New criteria for assessing fit quality in dynamic contrast-enhancedT1-weighted MRI for perfusion and permeability imaging

Nouveaux critères pour l'estimation de qualité d'ajustement en imagerie dynamique T1 avec injection d'agent de contraste pour l'imagerie de perfusion et de perméabilité

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Abstract

Contrast-enhanced (CE) MRI provides in vivo physiological information that cannot be obtained by conventional imaging methods. This information is generally extracted by using models to represent the circulation of contrast agent in the body. However, the results depend on the quality of the fit obtained with the chosen model. Therefore, one must check the fit quality to avoid working on physiologically irrelevant parameters. In this study two dimensionless criteria-the fraction of modeling information (FMI) and the fraction of residual information (FRI)-are proposed to identify errors caused by poor fit. These are compared with more conventional criteria, namely the quadratic error and the correlation coefficient, both theoretically and with the use of simulated and real CE-MRI data. The results indicate the superiority of the new criteria. It is also shown that these new criteria can be used to detect oversimplified models. Magn Reson Med 54:868-877, 2005.
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Dates and versions

hal-03788053 , version 1 (08-11-2022)

Identifiers

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Daniel Balvay, Frédérique Frouin, Guillaume Calmon, Bertrand Bessoud, Edmond Kahn, et al.. New criteria for assessing fit quality in dynamic contrast-enhancedT1-weighted MRI for perfusion and permeability imaging. Magnetic Resonance in Medicine, 2005, 54 (4), pp.868 - 877. ⟨10.1002/mrm.20650⟩. ⟨hal-03788053⟩
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