ArticleMedical physics2021
Gastrointestinal 4D MRI with respiratory motion correction.
Article in Medical physics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 19 citations in OpenAlex.
- Modality-agnostic, patient-specific digital twins modeling temporally varying digestive motion.Physics in medicine and biology · 2026Article
- Impact of abdominal compression on heart and stomach motion for stereotactic arrhythmia radioablation.Journal of applied clinical medical physics · 2024Article
- Volumetric MRI with sparse sampling for MR-guided 3D motion tracking via sparse prior-augmented implicit neural representation learning.Medical physics · 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
- Diffeomorphic Surface Modeling for MRI-Based Characterization of Gastric Anatomy and Motility.IEEE transactions on bio-medical engineering · 2023Article
- A model for gastrointestinal tract motility in a 4D imaging phantom of human anatomy.Medical physics · 2023Article
- Quantifying intrafractional gastric motion using auto-segmentation on MRI: Deformation and respiratory-induced displacement compared.Journal of applied clinical medical physics · 2023Article
- Development of an abdominal dose accumulation tool and assessments of accumulated dose in gastrointestinal organs.Physics in medicine and biology · 2023Article
- Real-time prediction of stomach motions based upon gastric contraction and breathing models.Physics in medicine and biology · 2022Article
- The future of MRI in radiation therapy: Challenges and opportunities for the MR community.Magnetic resonance in medicine · 2022Review
- 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
- A hierarchical model of abdominal configuration changes extracted from golden angle radial magnetic resonance imaging.Physics in medicine and biology · 2021Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 2 countries.
Funding
Abstract
purposeGastrointestinal motion patterns such as peristalsis and segmental contractions can alter the shape and position of the stomach and intestines with respect to other irradiated organs during radiation therapy. Unfortunately, these deformations are concealed by conventional four-dimensional (4D)-MRI techniques, which were developed to visualize respiratory motion by binning acquired data into respiratory motion states without considering the phases of GI motion. We present a method to reconstruct breathing-compensated images showing the phases of periodic gastric motion and study the effect of this motion on regional anatomical structures.
methodsSixty-seven DCE-MRI examinations were performed on patients undergoing MRI simulation for hepatocellular carcinoma using a golden-angle stack-of-stars sequence that collected 2000 radial spokes over 5 min. The collected data were reconstructed using a method with integrated respiratory motion correction into a time series of 3D image volumes without visible breathing motion. From this series, a gastric motion signal was extracted by temporal filtering of time-intensity curves in the stomach. Using this motion signal, breathing-corrected back-projection images were sorted according to the gastric phase and reconstructed into 21 gastric motion state images showing the phases of gastric motion.
resultsReconstructed image volumes showed gastric motion states clearly with no visible breathing motion or related artifacts. The mean frequency of the gastric motion signal was 3 cycles/min with a standard deviation of 0.27 cycles/min.
conclusionsPeriodic gastrointestinal motion can be visualized without confounding respiratory motion using the presented GI 4D MRI technique. GI 4D MRIs may help define internal target volumes for treatment planning, aid in planning organ at risk volume definition, or support motion model development for gastrointestinal motion tracking algorithms for real-time MR-guided radiation therapy.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.