Outputs (93)

A standardized MRI phantom for dissolved phase 129Xe MRI (2024)
Journal Article
Filkins, M., Harrison, A., Collier, G. J., Norquay, G., Wild, J. M., Rigby, S. P., Pavlovskaya, G. E., & Meersmann, T. (2024). A standardized MRI phantom for dissolved phase 129Xe MRI. Journal of Magnetic Resonance, 21, Article 100175. https://doi.org/10.1016/j.jmro.2024.100175

Pulmonary MRI of hyperpolarized xenon-129 (hp129Xe) dissolved in the lung parenchyma and vascular phase is gaining increasing attention for clinical assessment of gas exchange in multiple diseases. These conditions can involve thickening of barrier t... Read More about A standardized MRI phantom for dissolved phase 129Xe MRI.

Combined magnetic resonance imaging, high resolution manometry and a randomised trial of bisacodyl versus hyoscine shows the significance of an enlarged colon in constipation: the RECLAIM study (2024)
Journal Article
Wilkinson-Smith, V., Scott, M., Menys, A., Wiklendt, L., MARCIANI, L., Atkinson, D., Sansone, S., Zdanavciene, A., Coupland, C., Knowles, C., Dinning, P., Taylor, S., Gowland, P., Hoad, C., Corsetti, M., & Spiller, R. (2025). Combined magnetic resonance imaging, high resolution manometry and a randomised trial of bisacodyl versus hyoscine shows the significance of an enlarged colon in constipation: the RECLAIM study. Gut, 74(1), 35-44. https://doi.org/10.1136/gutjnl-2024-332755

Background
Colonic motility in constipation can be assessed non-invasively using MRI.

Objective
To compare MRI with high resolution colonic manometry (HRCM) for predicting treatment response.

Design
Part 1: 44 healthy volunteers (HV), 43... Read More about Combined magnetic resonance imaging, high resolution manometry and a randomised trial of bisacodyl versus hyoscine shows the significance of an enlarged colon in constipation: the RECLAIM study.

Determinants of cerebral blood flow and arterial transit time in healthy older adults (2024)
Journal Article
Feron, J., Segaert, K., Rahman, F., Fosstveit, S. H., Joyce, K. E., Gilani, A., Lohne-Seiler, H., Berntsen, S., Mullinger, K. J., & Lucas, S. J. (2024). Determinants of cerebral blood flow and arterial transit time in healthy older adults. Aging, 16(18), 12473-12497. https://doi.org/10.18632/aging.206112

Cerebral blood flow (CBF) and arterial transit time (ATT), markers of brain vascular health, worsen with age. The primary aim of this cross-sectional study was to identify modifiable determinants of CBF and ATT in healthy older adults (n = 78, aged 6... Read More about Determinants of cerebral blood flow and arterial transit time in healthy older adults.

Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex (2023)
Journal Article
Asghar, M., Sanchez-Panchuelo, R., Schluppeck, D., & Francis, S. (2023). Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex. Brain Topography, 36, 816-834. https://doi.org/10.1007/s10548-023-01000-8

Functional magnetic resonance imaging can provide detailed maps of how sensory space is mapped in the human brain. Here, we use a novel 16 stimulator setup (a 4 × 4 grid) to measure two-dimensional sensory maps of between and within-digit (D2–D4) spa... Read More about Two-Dimensional Population Receptive Field Mapping of Human Primary Somatosensory Cortex.

A molecular–mechanical link in shear-induced self-assembly of a functionalized biopolymeric fluid (2023)
Journal Article
Pavlovskaya, G. E., & Meersmann, T. (2023). A molecular–mechanical link in shear-induced self-assembly of a functionalized biopolymeric fluid. Soft Matter, 19(17), 3228-3237. https://doi.org/10.1039/d2sm01381a

23Na multiple quantum filtered (MQF) rheo-NMR methods were applied to probe the molecular foundation for flow induced self-assembly in 0.5% κ-carrageenan fluid. This method is sensitive enough to utilize an endogenous sodium ion concentration of appr... Read More about A molecular–mechanical link in shear-induced self-assembly of a functionalized biopolymeric fluid.

Trajectories of cortical structures associated with stress across adolescence: a bivariate latent change score approach (2023)
Journal Article
Nweze, T., Banaschewski, T., Ajaelu, C., Okoye, C., Ezenwa, M., Whelan, R., Papadopoulos Orfanos, D., Bokde, A. L., Desrivières, S., Grigis, A., Garavan, H., Gowland, P., Heinz, A., Brühl, R., Martinot, J., Martinot, M. P., Artiges, E., Nees, F., Paus, T., Poustka, L., …IMAGEN Consortium. (2023). Trajectories of cortical structures associated with stress across adolescence: a bivariate latent change score approach. Journal of Child Psychology and Psychiatry, 64(8), 1159-1175. https://doi.org/10.1111/jcpp.13793

Background: Stress exposure in childhood and adolescence has been linked to reductions in cortical structures and cognitive functioning. However, to date, most of these studies have been cross-sectional, limiting the ability to make long-term inferen... Read More about Trajectories of cortical structures associated with stress across adolescence: a bivariate latent change score approach.

A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men (2023)
Journal Article
Aliyu, A. I., Nixon, A., Hoad, C., Marciani, L., Corsetti, M., Aithal, G. P., Macdonald, I. A., Cordon, S. M., Alhussain, M. H., Inoue, H., Yamada, M., & Taylor, M. A. (2023). A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men. British Journal of Nutrition, 130(8), 1316-1328. https://doi.org/10.1017/S0007114523000302

AbstractInclusion in nasogastric tube feeds (NGTF) of acid-sensitive, seaweed-derived alginate, expected to form a reversible gel in the stomach, may create a more normal intragastric state and modified gastrointestinal responses. This may ameliorate... Read More about A comparative, randomised MRI study of the physiological and appetitive responses to gelling (alginate) and non-gelling nasogastric tube feeds in healthy men.

GLP−1 Promotes Cortical and Medullary Perfusion in the Human Kidney and Maintains Renal Oxygenation During NaCl Loading (2023)
Journal Article
Haddock, B., Kristensen, K. B., Tayyab, M., Larsson, H. B. W., Lindberg, U., Vestergaard, M., Francis, S., Jensen, B. L., Andersen, U. B., & Asmar, A. (2023). GLP−1 Promotes Cortical and Medullary Perfusion in the Human Kidney and Maintains Renal Oxygenation During NaCl Loading. Journal of the American Heart Association, 12(3), Article e027712. https://doi.org/10.1161/JAHA.122.027712

Background

GLP‐1 (glucagon‐like peptide‐1) receptor agonists exert beneficial long‐term effects on cardiovascular and renal outcomes. In humans, the natriuretic effect of GLP‐1 depends on GLP‐1 receptor interaction, is accompanied by suppression o... Read More about GLP−1 Promotes Cortical and Medullary Perfusion in the Human Kidney and Maintains Renal Oxygenation During NaCl Loading.

Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes (2022)
Journal Article
Coleman, S. C., Seedat, Z. A., Whittaker, A. C., Lenartowicz, A., & Mullinger, K. J. (2023). Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes. NeuroImage, 265, Article 119801. https://doi.org/10.1016/j.neuroimage.2022.119801

Post-task responses (PTRs) are transitionary responses occurring for several seconds between the end of a stimulus/task and a period of rest. The most well-studied of these are beta band (13 – 30 Hz) PTRs in motor networks following movement, often c... Read More about Beyond the Beta Rebound: Post-Task Responses in Oscillatory Activity follow Cessation of Working Memory Processes.

Improved Dynamic Contrast-Enhanced MRI Using Low Rank with Joint Sparsity (2022)
Journal Article
Zhang, J., Najeeb, F., Wang, X., Xu, P., Omer, H., Zheng, J., Zhang, J., Francis, S., Glover, P., Bowtell, R., & Wang, C. (2022). Improved Dynamic Contrast-Enhanced MRI Using Low Rank with Joint Sparsity. IEEE Access, 10, 121193-121203. https://doi.org/10.1109/access.2022.3222313

This work presents a free-breathing dynamic contrast-enhanced (DCE) MRI reconstruction method called low-rank plus sparse (L+S) with joint sparsity. The proposed method improved dynamic contrast performance by integrating an additional temporal Fast... Read More about Improved Dynamic Contrast-Enhanced MRI Using Low Rank with Joint Sparsity.