Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations
Diffusion weighted imaging (DWI) and intravoxel incoherent motion (IVIM) have been explored to assess liver tumors and diffused liver diseases. IVIM reflects the microscopic translational motions that occur in voxels in magnetic resonance (MR) DWI. In biologic tissues, molecular diffusion of water a...
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| Format: | Article |
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MDPI AG
2021-02-01
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| Series: | Diagnostics |
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| Online Access: | https://www.mdpi.com/2075-4418/11/2/379 |
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| author | Olivier Chevallier Yì Xiáng J. Wáng Kévin Guillen Julie Pellegrinelli Jean-Pierre Cercueil Romaric Loffroy |
| author_facet | Olivier Chevallier Yì Xiáng J. Wáng Kévin Guillen Julie Pellegrinelli Jean-Pierre Cercueil Romaric Loffroy |
| author_sort | Olivier Chevallier |
| collection | DOAJ |
| description | Diffusion weighted imaging (DWI) and intravoxel incoherent motion (IVIM) have been explored to assess liver tumors and diffused liver diseases. IVIM reflects the microscopic translational motions that occur in voxels in magnetic resonance (MR) DWI. In biologic tissues, molecular diffusion of water and microcirculation of blood in the capillary network can be assessed using IVIM DWI. The most commonly applied model to describe the DWI signal is a bi-exponential model, with a slow compartment of diffusion linked to pure molecular diffusion (represented by the coefficient D<sub>slow</sub>), and a fast compartment of diffusion, related to microperfusion (represented by the coefficient D<sub>fast</sub>). However, high variance in D<sub>fast</sub> estimates has been consistently shown in literature for liver IVIM, restricting its application in clinical practice. This variation could be explained by the presence of another very fast compartment of diffusion in the liver. Therefore, a tri-exponential model would be more suitable to describe the DWI signal. This article reviews the published evidence of the existence of this additional very fast diffusion compartment and discusses the performance and limitations of the tri-exponential model for liver IVIM in current clinical settings. |
| first_indexed | 2024-03-09T00:36:18Z |
| format | Article |
| id | doaj.art-3bfd267c4c864d56922025f33cbbf8c1 |
| institution | Directory Open Access Journal |
| issn | 2075-4418 |
| language | English |
| last_indexed | 2024-03-09T00:36:18Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Diagnostics |
| spelling | doaj.art-3bfd267c4c864d56922025f33cbbf8c12023-12-11T18:07:43ZengMDPI AGDiagnostics2075-44182021-02-0111237910.3390/diagnostics11020379Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and LimitationsOlivier Chevallier0Yì Xiáng J. Wáng1Kévin Guillen2Julie Pellegrinelli3Jean-Pierre Cercueil4Romaric Loffroy5Image-Guided Therapy Center, Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21079 Dijon, FranceDepartment of Imaging and Interventional Radiology, Faculty of Medicine, The Chinese University of Hong Kong, New Territories, Hong Kong, ChinaImage-Guided Therapy Center, Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21079 Dijon, FranceImage-Guided Therapy Center, Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21079 Dijon, FranceImage-Guided Therapy Center, Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21079 Dijon, FranceImage-Guided Therapy Center, Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21079 Dijon, FranceDiffusion weighted imaging (DWI) and intravoxel incoherent motion (IVIM) have been explored to assess liver tumors and diffused liver diseases. IVIM reflects the microscopic translational motions that occur in voxels in magnetic resonance (MR) DWI. In biologic tissues, molecular diffusion of water and microcirculation of blood in the capillary network can be assessed using IVIM DWI. The most commonly applied model to describe the DWI signal is a bi-exponential model, with a slow compartment of diffusion linked to pure molecular diffusion (represented by the coefficient D<sub>slow</sub>), and a fast compartment of diffusion, related to microperfusion (represented by the coefficient D<sub>fast</sub>). However, high variance in D<sub>fast</sub> estimates has been consistently shown in literature for liver IVIM, restricting its application in clinical practice. This variation could be explained by the presence of another very fast compartment of diffusion in the liver. Therefore, a tri-exponential model would be more suitable to describe the DWI signal. This article reviews the published evidence of the existence of this additional very fast diffusion compartment and discusses the performance and limitations of the tri-exponential model for liver IVIM in current clinical settings.https://www.mdpi.com/2075-4418/11/2/379diffusion weighted imagingintravoxel incoherent motionlivertri-exponentialb-value |
| spellingShingle | Olivier Chevallier Yì Xiáng J. Wáng Kévin Guillen Julie Pellegrinelli Jean-Pierre Cercueil Romaric Loffroy Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations Diagnostics diffusion weighted imaging intravoxel incoherent motion liver tri-exponential b-value |
| title | Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations |
| title_full | Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations |
| title_fullStr | Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations |
| title_full_unstemmed | Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations |
| title_short | Evidence of Tri-Exponential Decay for Liver Intravoxel Incoherent Motion MRI: A Review of Published Results and Limitations |
| title_sort | evidence of tri exponential decay for liver intravoxel incoherent motion mri a review of published results and limitations |
| topic | diffusion weighted imaging intravoxel incoherent motion liver tri-exponential b-value |
| url | https://www.mdpi.com/2075-4418/11/2/379 |
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