ArticleMedical physics2021
Technical Note: Effects of rotating gantry on magnetic field and eddy currents in 0.35 T MRI-guided radiotherapy (MR-IGRT) system.
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 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
3 citing papers in PubMed.
- Accurate, repeatable, and geometrically precise diffusion-weighted imaging on a 0.35 T magnetic resonance imaging-guided linear accelerator.Physics and imaging in radiation oncology · 2023Article
- System-dependent image distortion related to gantry positions of a 0.35 T MRgRT: Characterization and the corresponding correction.Journal of applied clinical medical physics · 2023Article
- Real-time BMedical physics · 2022Article
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
purposeThe purpose of this study was to identify the cause of severe image artifacts that occurred during gantry rotation in a 0.35 T MRI-Linac by comparing measurements of eddy currents, center frequency, and field inhomogeneities made with the gantry in motion and stationary.
methodsGradient and B
resultsSevere image artifacts were observed 22-35% of the time while the gantry was rotating. Short time constant eddy currents were not affected by gantry rotation. The peak to peak center frequency and FWHM rose by factors of 13.2-14.5 and 1.1-1.6, respectively, for the rotating versus stationary gantry. The magnitude of the center frequency offset and field inhomogeneities depended on the direction of the gantry rotation.
conclusionsImage artifacts during gantry rotation were primarily caused by center frequency variations and field inhomogeneities. Therefore, dynamic B
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