ArticleMagnetic resonance in medicine2014
Prevention of motion-induced signal loss in diffusion-weighted echo-planar imaging by dynamic restoration of gradient moments.
Article in Magnetic resonance in medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed.
- ADHD-related sex differences in frontal lobe white matter microstructure and associations with response control under conditions of varying cognitive load and motivational contingencies.Brain imaging and behavior · 2023Article
- Reduced basal ganglia tissue-iron concentration in school-age children with attention-deficit/hyperactivity disorder is localized to limbic circuitry.Experimental brain research · 2022Article
- Accuracy and precision in super-resolution MRI: Enabling spherical tensor diffusion encoding at ultra-high b-values and high resolution.NeuroImage · 2021Article
- Motion-insensitive diffusion imaging of the brain using optical tracking and dynamic sequence updates.Magnetic resonance in medicine · 2021Article
- Prospective motion detection and re-acquisition in diffusion MRI using a phase image-based method-Application to brain and tongue imaging.Magnetic resonance in medicine · 2021Article
- Prospective motion correction for diffusion weighted EPI of the brain using an optical markerless tracker.Magnetic resonance in medicine · 2021Article
- Baby brain atlases.NeuroImage · 2019Review
- Diffusion tensor spectroscopic imaging of the human brain in children and adults.Magnetic resonance in medicine · 2017Article
- Motion correction for diffusion weighted SMS imaging.Magnetic resonance imaging · 2017Article
- Compressive Sensing Based Q-Space Resampling for Handling Fast Bulk Motion in Hardi Acquisitions.Proceedings. IEEE International Symposium on Biomedical Imaging · 2016Article
- Prospective motion correction of segmented diffusion weighted EPI.Magnetic resonance in medicine · 2015Article
- Hyperintense Vessels on T2-PROPELLER-FLAIR in Patients with Acute MCA Stroke: Prediction of Arterial Stenosis and Perfusion Abnormality.AJNR. American journal of neuroradiology · 2015Article
- Motion artifacts in MRI: A complex problem with many partial solutions.Journal of magnetic resonance imaging : JMRI · 2015Review
- Comparison of optical and MR-based tracking.Magnetic resonance in medicine · 2015Article
- Fornix as an imaging marker for episodic memory deficits in healthy aging and in various neurological disorders.Frontiers in aging neuroscience · 2014Review
- Subject-Motion Correction in HARDI Acquisitions: Choices and Consequences.Frontiers in neurology · 2014Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
purposeHead motion is a significant problem in diffusion-weighted imaging as it may cause signal attenuation due to residual dephasing during strong diffusion encoding gradients even in single-shot acquisitions. Here, we present a new real-time method to prevent motion-induced signal loss in DWI of the brain.
methodsThe method requires a fast motion tracking system (optical in the current implementation). Two alterations were made to a standard diffusion-weighted echo-planar imaging sequence: first, real-time motion correction ensures that slices are correctly aligned relative to the moving brain. Second, the tracking data are used to calculate the motion-induced gradient moment imbalance which occurs during the diffusion encoding periods, and a brief gradient blip is inserted immediately prior to the signal readout to restore the gradient moment balance.
resultsPhantom experiments show that the direction as well as magnitude of the gradient moment imbalance affects the characteristics of unwanted signal attenuation. In human subjects, the addition of a moment-restoring blip prevented signal loss and improved the reproducibility and reliability of diffusion tensor measures even in the presence of substantial head movements.
conclusionThe method presented can improve robustness for clinical routine scanning in populations that are prone to head movements, such as children and uncooperative adult patients.
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