ArticleMagnetic resonance in medicine2022
MaxGIRF: Image reconstruction incorporating concomitant field and gradient impulse response function effects.
Article in Magnetic resonance in medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed, 29 citations in OpenAlex.
- Comparative Performance Analysis of an Open Source Motion-Compensated Cardiac Diffusion Sequence Across Different MRI Systems and Gradient Strengths-A Pilot Study.Magnetic resonance in medicine · 2026Article
- Distortion correction in TSE near titanium implants at 0.55 T using reversed frequency-encoding and model-based reconstruction.Magma (New York, N.Y.) · 2026Article
- Cartesian MaxGIRF: Model-based EPI reconstruction incorporating gradient nonlinearity and concomitant field effects.Magnetic resonance in medicine · 2026Article
- MR sequence design to account for nonideal gradient performance.Magnetic resonance in medicine · 2026Article
- Modeling the MRI gradient system with a temporal convolutional network: Improved reconstruction by prediction of readout gradient errors.Magnetic resonance in medicine · 2026Article
- Article
- A single oscillating waveform-based gradient delay estimation.Magnetic resonance imaging · 2025Article
- Multidimensional RF pulse design with consideration of concomitant field effects.Magnetic resonance in medicine · 2025Article
- Measuring biventricular function and left atrial volume in a single five-dimensional whole-heart cardiovascular magnetic resonance scan at 0.55T.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2025Article
- New clinical opportunities of low-field MRI: heart, lung, body, and musculoskeletal.Magma (New York, N.Y.) · 2024Review
- Cardiac MRI at Low Field Strengths.Journal of magnetic resonance imaging : JMRI · 2024Review
- Real-time water/fat imaging at 0.55T with spiral out-in-out-in sampling.Magnetic resonance in medicine · 2024Article
- Trajectory correction enables free-running chemical shift encoded imaging for accurate cardiac proton-density fat fraction quantification at 3T.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2024 · on this mapArticle
- Low-field MRI: A report on the 2022 ISMRM workshop.Magnetic resonance in medicine · 2023Review
- An evolution of low-field strength MRI.Magma (New York, N.Y.) · 2023Review
- Concomitant field compensation of spiral turbo spin-echo at 0.55 T.Magma (New York, N.Y.) · 2023Article
- Low-field 0.55 T MRI evaluation of the fetus.Pediatric radiology · 2023Article
- Contrast-optimal simultaneous multi-slice bSSFP cine cardiac imaging at 0.55 T.Magnetic resonance in medicine · 2023Article
- Calibration of concomitant field offsets using phase contrast MRI for asymmetric gradient coils.Magnetic resonance in medicine · 2023Article
- MaxGIRF: Image reconstruction incorporating concomitant field and gradient impulse response function effects.Magnetic resonance in medicine · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
Abstract
purposeTo develop and evaluate an improved strategy for compensating concomitant field effects in non-Cartesian MRI at the time of image reconstruction. THEORY: We present a higher-order reconstruction method, denoted as MaxGIRF, for non-Cartesian imaging that simultaneously corrects off-resonance, concomitant fields, and trajectory errors without requiring specialized hardware. Gradient impulse response functions are used to predict actual gradient waveforms, which are in turn used to estimate the spatiotemporally varying concomitant fields based on analytic expressions. The result, in combination with a reference field map, is an encoding matrix that incorporates a correction for all three effects.
methodsThe MaxGIRF reconstruction is applied to noiseless phantom simulations, spiral gradient-echo imaging of an International Society for Magnetic Resonance in Medicine/National Institute of Standards and Technology phantom, and axial and sagittal multislice spiral spin-echo imaging of a healthy volunteer at 0.55 T. The MaxGIRF reconstruction was compared against previously established concomitant field-compensation and image-correction methods. Reconstructed images are evaluated qualitatively and quantitatively using normalized RMS error. Finally, a low-rank approximation of MaxGIRF is used to reduce computational burden. The accuracy of the low-rank approximation is studied as a function of minimum rank.
resultsThe MaxGIRF reconstruction successfully mitigated blurring artifacts both in phantoms and in vivo and was effective in regions where concomitant fields counteract static off-resonance, superior to the comparator method. A minimum rank of 8 and 30 for axial and sagittal scans, respectively, gave less than 2% error compared with the full-rank reconstruction.
conclusionsThe MaxGIRF reconstruction simultaneously corrects off-resonance, trajectory errors, and concomitant field effects. The impact of this method is greatest when imaging with longer readouts and/or at lower field strength.
Indexed as
Identifiers
What OpenQuestion holds
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.