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Parametric Assessment of the Effect of Cochlear Implant Positioning on Brain MRI Artefacts at 3 T (2021)
Journal Article
Dewey, R. S., Dineen, R. A., Clemence, M., Dick, O., Bowtell, R., & Kitterick, P. T. (2021). Parametric Assessment of the Effect of Cochlear Implant Positioning on Brain MRI Artefacts at 3 T. Otology and Neurotology, 42(10), e1449-e1456. https://doi.org/10.1097/MAO.0000000000003281

Background:Brain magnetic resonance imaging in patients with cochlear implants (CIs) is impacted by image artefacts.Hypothesis:The optimal positioning of the CI to minimize artefacts is unknown. This study aimed to characterize the dependence of the... Read More about Parametric Assessment of the Effect of Cochlear Implant Positioning on Brain MRI Artefacts at 3 T.

Planar Coil Optimization in a Magnetically Shielded Cylinder (2021)
Journal Article
Packer, M., Hobson, P. J., Holmes, N., Leggett, J., Glover, P., Brookes, M. J., Bowtell, R., & Fromhold, T. M. (2021). Planar Coil Optimization in a Magnetically Shielded Cylinder. Physical Review Applied, 15(6), Article 064006. https://doi.org/10.1103/PhysRevApplied.15.064006

Hybrid magnetic shields with both active field generating components and high-permeability magnetic shielding are increasingly needed for various technologies and experiments that require precision-controlled magnetic field environments. However, the... Read More about Planar Coil Optimization in a Magnetically Shielded Cylinder.

Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system (2021)
Journal Article
Brookes, M. J., Boto, E., Rea, M., Shah, V., Osborne, J., Holmes, N., Hill, R. M., Leggett, J., Rhodes, N., & Bowtell, R. (2021). Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system. NeuroImage, 236, Article 118025. https://doi.org/10.1016/j.neuroimage.2021.118025

The optically pumped magnetometer (OPM) is a viable means to detect magnetic fields generated by human brain activity. Compared to conventional detectors (superconducting quantum interference devices) OPMs are small, lightweight, flexible, and operat... Read More about Theoretical advantages of a triaxial optically pumped magnetometer magnetoencephalography system.

Calibration-free regional RF shims for MRS (2021)
Journal Article
Berrington, A., Považan, M., Mirfin, C., Bawden, S., Park, Y. W., Marsh, D. C., Bowtell, R., & Gowland, P. A. (2021). Calibration-free regional RF shims for MRS. Magnetic Resonance in Medicine, 86(2), 611-624. https://doi.org/10.1002/mrm.28749

Purpose: Achieving a desired RF transmit field (B1+) in small regions-of-interest (ROIs) is critical for single-voxel MR spectroscopy at ultra-high field. RF shimming, using parallel transmission, requires B1+ mapping and optimisation, which limits i... Read More about Calibration-free regional RF shims for MRS.

Operculo-Insular and Anterior Cingulate Plasticity Induced by Transcranial Magnetic Stimulation in the Human Motor Cortex: A Dynamic Casual Modelling Study (2021)
Journal Article
Hodkinson, D. J., Bungert, A., Bowtell, R. W., Jackson, S. R., & Jung, J. (2021). Operculo-Insular and Anterior Cingulate Plasticity Induced by Transcranial Magnetic Stimulation in the Human Motor Cortex: A Dynamic Casual Modelling Study. Journal of Neurophysiology, 125(4), 1180-1190. https://doi.org/10.1152/jn.00670.2020

The ability to induce neuroplasticity with non-invasive brain stimulation techniques offers a unique opportunity to examine the human brain systems involved in pain modulation. In experimental and clinical settings, the primary motor cortex (M1) is c... Read More about Operculo-Insular and Anterior Cingulate Plasticity Induced by Transcranial Magnetic Stimulation in the Human Motor Cortex: A Dynamic Casual Modelling Study.

Probing the myelin water compartment with a saturation-recovery, multi-echo gradient-recalled echo sequence (2021)
Journal Article
Kleban, E., Gowland, P., & Bowtell, R. (2021). Probing the myelin water compartment with a saturation-recovery, multi-echo gradient-recalled echo sequence. Magnetic Resonance in Medicine, 86(1), 167-181. https://doi.org/10.1002/mrm.28695

Purpose: To investigate the effect of varying levels of (Formula presented.) -weighting on the evolution of the complex signal from white matter in a multi-echo gradient-recalled echo (mGRE) saturation-recovery sequence. Theory and Methods: Analysis... Read More about Probing the myelin water compartment with a saturation-recovery, multi-echo gradient-recalled echo sequence.

Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study (2020)
Journal Article
Briley, P. M., Liddle, E. B., Simmonite, M., Jansen, M., White, T. P., Balain, V., Palaniyappan, L., Bowtell, R., Mullinger, K. J., & Liddle, P. F. (2021). Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, 6(12), 1145-1156. https://doi.org/10.1016/j.bpsc.2020.10.018

Background: There is emerging evidence for abnormal beta oscillations in psychosis. Beta oscillations are likely to play a key role in the coordination of sensorimotor information that is crucial to healthy mental function. Growing evidence suggests... Read More about Regional Brain Correlates of Beta Bursts in Health and Psychosis: A Concurrent Electroencephalography and Functional Magnetic Resonance Imaging Study.