Field-Based Spatial Self-Registration of Multicoil Hardware for B

Isabelle Zinghini, Ian Macleod, Carlotta Ianniello, Sebastian Theilenberg, Christoph Juchem

Abstract read

In one paragraph

Article in Magnetic resonance in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it

0cells of the map it votes in

1citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

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.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

Field-Based Spatial Self-Registration of Multicoil Hardware for BMagnetic resonance in medicine · 2026
Article

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Isabelle ZinghiniHigh Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0009-0000-4350-0978

Ian MacleodDepartment of Biomedical Engineering, Columbia University, New York, New York, USA.

Carlotta IannielloDepartment of Biomedical Engineering, Columbia University, New York, New York, USA.

Sebastian TheilenbergDepartment of Biomedical Engineering, Columbia University, New York, New York, USA.ORCID https://orcid.org/0000-0003-3439-5111

Christoph JuchemHigh Field MR Center, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.

Funding

NIH HHS R01-EB030560

6 · The paper itself

Abstract

purposeTo develop and validate a magnetic field-based method for self-registration of multicoil (MC) shim hardware in MRI systems, enabling accurate B

methodsAn algorithm was designed to estimate rigid transformations between 3D field maps acquired during hardware calibration (Reference field) and subsequent experiments (Measured field). Hardware misplacement was determined by co-registration of the two fields within a defined region of interest. Simulations using Biot-Savart-derived MC basis fields and experimental validation with a 48-channel MC array at 3 T were used to quantify localization accuracy under varying signal-to-noise ratio (SNR) levels. A genetic algorithm optimized coil currents to generate a Reference field shape that yielded minimal self-registration error.

resultsSimulations and measurements demonstrated that submillimeter (≤ 0.5 mm) and subdegree (≤ 0.5°) localization accuracy is achievable at practical SNR levels (≥ 5). Errors decreased with increasing SNR and field complexity. The optimized field produced by the genetic algorithm yielded the lowest mean translation error (0.20 mm) and rotation error (0.11°), consistent with theoretical predictions. Self-registration computation required less than 10 s per case.

conclusionThe proposed field-based self-registration method enables rapid, accurate localization of MC shim hardware using only MR-acquired field maps, eliminating the need for external tracking hardware or repeated calibrations. This approach enhances reproducibility of MC field control and supports improved B

Indexed as

Image EnhancementMagnetic Resonance ImagingAlgorithmsEquipment DesignEquipment Failure AnalysisMagnetic FieldsPhantoms, ImagingReproducibility of ResultsSensitivity and SpecificitySignal-To-Noise RatioB0 mappingB0 shimmingmagnetic field modelingMRIMRI hardwaremulticoil shimming

Identifiers

PMID42121294

DOI10.1002/mrm.70413

PMCPMC13327421

What OpenQuestion holds

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LicenceCC BY-NC

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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.