ArticleMagnetic resonance in medicine2018
RACER-GRASP: Respiratory-weighted, aortic contrast enhancement-guided and coil-unstreaking golden-angle radial sparse 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 34 papers.
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Who cites it
34 citing papers in PubMed.
- Respiratory Motion Management in Abdominal MRI: Revisiting the Gap Between Technical Advances and Clinical Translation.Magnetic resonance in medicine · 2026Review
- Variable density and anisotropic field-of-view for 3D Stack-of-Stars radial imaging.Magma (New York, N.Y.) · 2026Article
- Free-breathing phase-sensitive inversion recovery TMagnetic resonance in medicine · 2026Article
- Accelerated Abdominal MRI: A Review of Current Methods and Applications.Journal of magnetic resonance imaging : JMRI · 2025Review
- MRI of GlycoNOE in the human liver using GraspNOE-Dixon.Magnetic resonance in medicine · 2025Article
- SC-GROG followed by L+S reconstruction with multiple sparsity constraints for accelerated Golden-angle-radial DCE-MRI.PloS one · 2025Article
- Accelerated dynamic magnetic resonance imaging from Spatial-Subspace Reconstructions (SPARS).PloS one · 2025Article
- A signal model for fat-suppressed TNMR in biomedicine · 2025Article
- DCE-MRI of the liver with sub-second temporal resolution using GRASP-Pro with navi-stack-of-stars sampling.NMR in biomedicine · 2024Article
- Free-breathing, fat-corrected TMagnetic resonance in medicine · 2024Article
- Live-view 4D GRASP MRI: A framework for robust real-time respiratory motion tracking with a sub-second imaging latency.Magnetic resonance in medicine · 2023Article
- Kz-accelerated variable-density stack-of-stars MRI.Magnetic resonance imaging · 2023Article
- 4D Golden-Angle Radial MRI at Subsecond Temporal Resolution.NMR in biomedicine · 2023Article
- Cancellation of streak artifacts in radial abdominal imaging using interference null space projection.Magnetic resonance in medicine · 2022Article
- Golden-Angle Radial MRI: Basics, Advances, and Applications.Journal of magnetic resonance imaging : JMRI · 2022Review
- Repeatability and robustness of MP-GRASP TMagnetic resonance in medicine · 2022Article
- Aliasing artifact reduction in spiral real-time MRI.Magnetic resonance in medicine · 2021Article
- Magnetization-prepared GRASP MRI for rapid 3D T1 mapping and fat/water-separated T1 mapping.Magnetic resonance in medicine · 2021Article
- Rapid 4D-MRI reconstruction using a deep radial convolutional neural network: Dracula.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2021Article
- Free-breathing radial imaging using a pilot-tone radiofrequency transmitter for detection of respiratory motion.Magnetic resonance in medicine · 2021Article
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6 authors.
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Abstract
purposeTo develop and evaluate a novel dynamic contrast-enhanced imaging technique called RACER-GRASP (Respiratory-weighted, Aortic Contrast Enhancement-guided and coil-unstReaking Golden-angle RAdial Sparse Parallel) MRI that extends GRASP to include automatic contrast bolus timing, respiratory motion compensation, and coil-weighted unstreaking for improved imaging performance in liver MRI.
methodsIn RACER-GRASP, aortic contrast enhancement (ACE) guided k-space sorting and respiratory-weighted sparse reconstruction are performed using aortic contrast enhancement and respiratory motion signals extracted directly from the acquired data. Coil unstreaking aims to weight multicoil k-space according to streaking artifact level calculated for each individual coil during image reconstruction, so that coil elements containing a high level of streaking artifacts contribute less to the final results. Self-calibrating GRAPPA operator gridding was applied as a pre-reconstruction step to reduce computational burden in the subsequent iterative reconstruction. The RACER-GRASP technique was compared with standard GRASP reconstruction in a group of healthy volunteers and patients referred for clinical liver MR examination.
resultsCompared with standard GRASP, RACER-GRASP significantly improved overall image quality (average score: 3.25 versus 3.85) and hepatic vessel sharpness/clarity (average score: 3.58 versus 4.0), and reduced residual streaking artifact level (average score: 3.23 versus 3.94) in different contrast phases. RACER-GRASP also enabled automatic timing of the arterial phases.
conclusionsThe aortic contrast enhancement-guided sorting, respiratory motion suppression and coil unstreaking introduced by RACER-GRASP improve upon the imaging performance of standard GRASP for free-breathing dynamic contrast-enhanced MRI of the liver. Magn Reson Med 80:77-89, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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