ArticleNeuroImage2010
Improved shimming for fMRI specifically optimizing the local BOLD sensitivity.
Article in NeuroImage, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 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
11 citing papers in PubMed.
- Advancements in MR hardware systems and magnetic field control: BPsychoradiology · 2024Review
- Automated slice-specific z-shimming for functional magnetic resonance imaging of the human spinal cord.Human brain mapping · 2022Article
- Article
- Optogenetic auditory fMRI reveals the effects of visual cortical inputs on auditory midbrain response.Scientific reports · 2018Article
- Model-based iterative reconstruction for single-shot EPI at 7T.Magnetic resonance in medicine · 2017Article
- Variable slice thickness (VAST) EPI for the reduction of susceptibility artifacts in whole-brain GE-EPI at 7 Tesla.Magma (New York, N.Y.) · 2017Article
- A Hitchhiker's Guide to Functional Magnetic Resonance Imaging.Frontiers in neuroscience · 2016Review
- Intuitive decision making as a gradual process: investigating semantic intuition-based and priming-based decisions with fMRI.Brain and behavior · 2016Article
- Measurement of renal tissue oxygenation with blood oxygen level-dependent MRI and oxygen transit modeling.American journal of physiology. Renal physiology · 2014Article
- High-resolution functional MRI of the human amygdala at 7 T.European journal of radiology · 2013Article
- Multi-parametric neuroimaging reproducibility: a 3-T resource study.NeuroImage · 2011Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
In functional MRI, magnetic field inhomogeneities due to air-tissue susceptibility differences may lead to severe signal dropouts and geometric distortions in echo-planar images. Therefore, the inhomogeneities in the field are routinely minimized by shimming prior to imaging. However in fMRI, the Blood Oxygen Level Dependent (BOLD) effect is the measure of interest, so the BOLD sensitivity (BS) should be optimized rather than the magnetic field homogeneity. The analytical expression for an estimate of the BOLD sensitivity has been recently developed, allowing for the computation of BOLD sensitivity maps from echo-planar images and field maps. This report describes a novel shimming procedure that optimizes the local BOLD sensitivity over a region of interest. The method is applied in vivo and compared to a standard global shimming procedure. A breath-holding experiment was carried out and demonstrated that the BS-based shimming significantly improved the detection of activation in a target region of interest, the medial orbitofrontal cortex.
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.