ArticleMagnetic resonance in medicine2018
Rigid-body motion correction of the liver in image reconstruction for golden-angle stack-of-stars DCE MRI.
Article in Magnetic resonance in medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Motion-compensated image reconstruction for improved kidney function assessment using dynamic contrast-enhanced MRI.NMR in biomedicine · 2024Article
- Stochastic optimization of three-dimensional non-Cartesian sampling trajectory.Magnetic resonance in medicine · 2023Article
- Real time volumetric MRI for 3D motion tracking via geometry-informed deep learning.Medical physics · 2022Article
- Volumetric prediction of breathing and slow drifting motion in the abdomen using radial MRI and multi-temporal resolution modeling.Physics in medicine and biology · 2021Article
- Gastrointestinal 4D MRI with respiratory motion correction.Medical physics · 2021Article
- Modeling intra-fractional abdominal configuration changes using breathing motion-corrected radial MRI.Physics in medicine and biology · 2021Article
- Bulk motion-compensated DCE-MRI for functional imaging of kidneys in newborns.Journal of magnetic resonance imaging : JMRI · 2020Article
- Abdominal synthetic CT generation from MR Dixon images using a U-net trained with 'semi-synthetic' CT data.Physics in medicine and biology · 2020Article
- 3D nonrigid motion correction for quantitative assessment of hepatic lesions in DCE-MRI.Magnetic resonance in medicine · 2019Article
- Abdominal DCE-MRI reconstruction with deformable motion correction for liver perfusion quantification.Medical physics · 2018Article
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3 authors.
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Abstract
purposeRespiratory motion can affect pharmacokinetic perfusion parameters quantified from liver dynamic contrast-enhanced MRI. Image registration can be used to align dynamic images after reconstruction. However, intra-image motion blur remains after alignment and can alter the shape of contrast-agent uptake curves. We introduce a method to correct for inter- and intra-image motion during image reconstruction.
methodsSixteen liver dynamic contrast-enhanced MRI examinations of nine subjects were performed using a golden-angle stack-of-stars sequence. For each examination, an image time series with high temporal resolution but severe streak artifacts was reconstructed. Images were aligned using region-limited rigid image registration within a region of interest covering the liver. The transformations resulting from alignment were used to correct raw data for motion by modulating and rotating acquired lines in k-space. The corrected data were then reconstructed using view sharing.
resultsPortal-venous input functions extracted from motion-corrected images had significantly greater peak signal enhancements (mean increase: 16%, t-test, P < 0.001) than those from images aligned using image registration after reconstruction. In addition, portal-venous perfusion maps estimated from motion-corrected images showed fewer artifacts close to the edge of the liver.
conclusionsMotion-corrected image reconstruction restores uptake curves distorted by motion. Motion correction also reduces motion artifacts in estimated perfusion parameter maps. Magn Reson Med 79:1345-1353, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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