All Outputs (82)

Fast Event-Related Mapping of Population Fingertip Tuning Properties in Human Sensorimotor Cortex at 7T (2022)
Journal Article
Khalife, S., Francis, S. T., Schluppeck, D., Sánchez-Panchuelo, R. M., & Besle, J. (2022). Fast Event-Related Mapping of Population Fingertip Tuning Properties in Human Sensorimotor Cortex at 7T. eNeuro, 9(5), 1-18. https://doi.org/10.1523/ENEURO.0069-22.2022

fMRI studies that investigate somatotopic tactile representations in the human cortex typically use either block or phase-encoded stimulation designs. Event-related (ER) designs allow for more flexible and unpredictable stimulation sequences than the... Read More about Fast Event-Related Mapping of Population Fingertip Tuning Properties in Human Sensorimotor Cortex at 7T.

Decreased renal perfusion during acute kidney injury in critical COVID-19 assessed by magnetic resonance imaging: a prospective case control study (2022)
Journal Article
Luther, T., Eckerbom, P., Cox, E., Lipcsey, M., Bülow, S., Hultström, M., …Liss, P. (2022). Decreased renal perfusion during acute kidney injury in critical COVID-19 assessed by magnetic resonance imaging: a prospective case control study. Critical Care, 26(1), 262. https://doi.org/10.1186/s13054-022-04132-8

Abstract: Background: Renal hypoperfusion has been suggested to contribute to the development of acute kidney injury (AKI) in critical COVID-19. However, limited data exist to support this. We aim to investigate the differences in renal perfusion, ox... Read More about Decreased renal perfusion during acute kidney injury in critical COVID-19 assessed by magnetic resonance imaging: a prospective case control study.

LMISA: A Lightweight Multi-modality Image Segmentation Network via Domain Adaptation using Gradient Magnitude and Shape Constraint (2022)
Journal Article
Jafari, M., Francis, S., Garibaldi, J. M., & Chen, X. (2022). LMISA: A Lightweight Multi-modality Image Segmentation Network via Domain Adaptation using Gradient Magnitude and Shape Constraint. Medical Image Analysis, 81, Article 102536. https://doi.org/10.1016/j.media.2022.102536

In medical image segmentation, supervised machine learning models trained using one image modality (e.g. computed tomography (CT)) are often prone to failure when applied to another image modality (e.g. magnetic resonance imaging (MRI)) even for the... Read More about LMISA: A Lightweight Multi-modality Image Segmentation Network via Domain Adaptation using Gradient Magnitude and Shape Constraint.

In silico evaluation and optimisation of magnetic resonance elastography of the liver (2021)
Journal Article
McGrath, D. M., Bradley, C. R., & Francis, S. T. (2021). In silico evaluation and optimisation of magnetic resonance elastography of the liver. Physics in Medicine and Biology, 66(22), Article 225005. https://doi.org/10.1088/1361-6560/ac3263

Objective. Magnetic resonance elastography (MRE) is widely adopted as a biomarker of liver fibrosis. However, in vivo MRE accuracy is difficult to assess. Approach. Finite element model (FEM) simulation was employed to evaluate liver MRE accuracy and... Read More about In silico evaluation and optimisation of magnetic resonance elastography of the liver.

Review article: The aetiology of fatigue in inflammatory bowel disease and potential therapeutic management strategies (2021)
Journal Article
McGing, J. J., Radford, S. J., Francis, S. T., Serres, S., Greenhaff, P. L., & Moran, G. W. (2021). Review article: The aetiology of fatigue in inflammatory bowel disease and potential therapeutic management strategies. Alimentary Pharmacology and Therapeutics, 54(4), 368-387. https://doi.org/10.1111/apt.16465

Background: Fatigue is the inability to achieve or maintain an expected work output resulting from central or peripheral mechanisms. The prevalence of inflammatory bowel disease (IBD) fatigue can reach 86% in active disease, persisting in 50%-52% of... Read More about Review article: The aetiology of fatigue in inflammatory bowel disease and potential therapeutic management strategies.

Muscle and tendon adaptations to moderate load eccentric vs. concentric resistance exercise in young and older males (2021)
Journal Article
Quinlan, J. I., Franchi, M. V., Gharahdaghi, N., Badiali, F., Francis, S., Hale, A., …Narici, M. V. (2021). Muscle and tendon adaptations to moderate load eccentric vs. concentric resistance exercise in young and older males. GeroScience, 43(4), 1567-1584. https://doi.org/10.1007/s11357-021-00396-0

Resistance exercise training (RET) is well-known to counteract negative age-related changes in both muscle and tendon tissue. Traditional RET consists of both concentric (CON) and eccentric (ECC) contractions; nevertheless, isolated ECC contractions... Read More about Muscle and tendon adaptations to moderate load eccentric vs. concentric resistance exercise in young and older males.

Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults (2021)
Journal Article
Burley, C. V., Francis, S. T., Whittaker, A. C., Mullinger, K. J., & Lucas, S. J. E. (2021). Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults. Brain and Behavior, 11(7), Article e02126. https://doi.org/10.1002/brb3.2126

Introduction: Resting cerebral blood flow (CBF) and perfusion measures have been used to determine brain health. Studies showing variation in resting CBF with age and fitness level using different imaging approaches have produced mixed findings. We a... Read More about Measuring resting cerebral haemodynamics using MRI arterial spin labelling and transcranial Doppler ultrasound: comparison in younger and older adults.

Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals (2021)
Journal Article
Burley, C. V., Francis, S. T., Thomas, K. N., Whittaker, A. C., Lucas, S. J., & Mullinger, K. J. (2021). Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals. Frontiers in Physiology, 12, Article 656746. https://doi.org/10.3389/fphys.2021.656746

Cerebrovascular reactivity (CVR) is used as an outcome measure of brain health. Traditionally, lower CVR is associated with ageing, poor fitness and brain-related conditions (e.g. stroke, dementia). Indeed, CVR is suggested as a biomarker for disease... Read More about Contrasting Measures of Cerebrovascular Reactivity Between MRI and Doppler: A Cross-Sectional Study of Younger and Older Healthy Individuals.

Quantitative T1 mapping using multi-slice multi-shot inversion recovery EPI (2021)
Journal Article
Sanchez Panchuelo, R. M., Mougin, O., Turner, R., & Francis, S. T. (2021). Quantitative T1 mapping using multi-slice multi-shot inversion recovery EPI. NeuroImage, 234, Article 117976. https://doi.org/10.1016/j.neuroimage.2021.117976

An efficient multi-slice inversion–recovery EPI (MS-IR-EPI) sequence for fast, high spatial resolution, quantitative T1 mapping is presented, using a segmented simultaneous multi-slice acquisition, combined with slice order shifting across multiple a... Read More about Quantitative T1 mapping using multi-slice multi-shot inversion recovery EPI.

Automated renal segmentation in healthy and chronic kidney disease subjects using a convolutional neural network (2021)
Journal Article
Daniel, A., Buchanan, C., Allcock, T., Scerri, D., Cox, E., Prestwich, B., & Francis, S. (2021). Automated renal segmentation in healthy and chronic kidney disease subjects using a convolutional neural network. Magnetic Resonance in Medicine, 86(2), 1125-1136. https://doi.org/10.1002/mrm.28768

Purpose: Total Kidney Volume (TKV) is an important measure in renal disease detection and monitoring. We developed a fully automated method to segment the kidneys from T2-weighted magnetic resonance images (MRI) to calculate TKV of healthy control (H... Read More about Automated renal segmentation in healthy and chronic kidney disease subjects using a convolutional neural network.

Multiparametric MRI assessment of renal structure and function in acute kidney injury and renal recovery (2021)
Journal Article
Buchanan, C., Mahmoud, H., Cox, E., Noble, R., Prestwich, B., Kasmi, I., …Selby, N. M. (2021). Multiparametric MRI assessment of renal structure and function in acute kidney injury and renal recovery. Clinical Kidney Journal, 14(8), 1969-1976. https://doi.org/10.1093/ckj/sfaa221

Background: Acute Kidney Injury (AKI) is associated with a marked increase in mortality as well as subsequent chronic kidney disease (CKD) and end stage kidney disease. We performed multiparametric MRI with the aim of identifying potential non-invasi... Read More about Multiparametric MRI assessment of renal structure and function in acute kidney injury and renal recovery.

Consensus-based technical recommendations for clinical translation of renal ASL MRI (2019)
Journal Article
Nery, F., Buchanan, C. E., Harteveld, A. A., Odudu, A., Bane, O., Cox, E. F., …Fernández-Seara, M. A. (2020). Consensus-based technical recommendations for clinical translation of renal ASL MRI. Magnetic Resonance Materials in Physics, Biology and Medicine, 33(1), 141-161. https://doi.org/10.1007/s10334-019-00800-z

Objectives: To develop technical recommendations for the acquisition, processing and analysis of renal ASL data in the human kidney at 1.5T and 3T field strengths that can promote standardization of renal perfusion measurements and facilitate the com... Read More about Consensus-based technical recommendations for clinical translation of renal ASL MRI.

Consensus-based technical recommendations for clinical translation of renal BOLD MRI (2019)
Journal Article
Bane, O., Mendichovszky, I. A., Dekkers, I. A., Milani, B., Deux, J., Eckerbom, P., …Prasad, P. V. (2019). Consensus-based technical recommendations for clinical translation of renal BOLD MRI. Magma, 1-17

Objectives: Harmonization of acquisition and analysis protocols is an important step in the validation of BOLD MRI as a renal biomarker. This harmonization initiative provides technical recommendations based on a consensus report with the aim to move... Read More about Consensus-based technical recommendations for clinical translation of renal BOLD MRI.

Consensus-based technical recommendations for clinical translation of renal T1 and T2 mapping MRI (2019)
Journal Article
Semple, S. I. K., Dekkers, I. A., de Boer, A., Sharma, K., Cox, E. F., Lamb, H. J., …Francis, S. (2020). Consensus-based technical recommendations for clinical translation of renal T1 and T2 mapping MRI. Magnetic Resonance Materials in Physics, Biology and Medicine, 33(1), 163-176. https://doi.org/10.1007/s10334-019-00797-5

© 2019, The Author(s). To develop technical recommendations on the acquisition and post-processing of renal longitudinal (T1) and transverse (T2) relaxation time mapping. A multidisciplinary panel consisting of 18 experts in the field of renal T1 and... Read More about Consensus-based technical recommendations for clinical translation of renal T1 and T2 mapping MRI.

Consensus-based technical recommendations for clinical translation of renal diffusion-weighted MRI (2019)
Journal Article
Ljimani, A., Caroli, A., Laustsen, C., Francis, S., Mendichovszky, I. A., Bane, O., …Sigmund, E. E. (2020). Consensus-based technical recommendations for clinical translation of renal diffusion-weighted MRI. Magnetic Resonance Materials in Physics, Biology and Medicine, 33, 177-195. https://doi.org/10.1007/s10334-019-00790-y

© 2019, European Society for Magnetic Resonance in Medicine and Biology (ESMRMB). Objectives: Standardization is an important milestone in the validation of DWI-based parameters as imaging biomarkers for renal disease. Here, we propose technical reco... Read More about Consensus-based technical recommendations for clinical translation of renal diffusion-weighted MRI.

Post-stimulus beta responses are modulated by task duration (2019)
Journal Article
Pakenham, D. O., Quinn, A. J., Fry, A., Francis, S. T., Woolrich, M. W., Brookes, M. J., & Mullinger, K. J. (2020). Post-stimulus beta responses are modulated by task duration. NeuroImage, 206, Article 116288. https://doi.org/10.1016/j.neuroimage.2019.116288

Modulation of beta-band neural oscillations during and following movement is a robust marker of brain function. In particular, the post-movement beta rebound (PMBR), which occurs on movement cessation, has been related to inhibition and connectivity... Read More about Post-stimulus beta responses are modulated by task duration.

Quantitative assessment of renal structural and functional changes in chronic kidney disease using multi-parametric magnetic resonance imaging (2019)
Journal Article
Buchanan, C. E., Mahmoud, H., Cox, E. F., McCulloch, T., Prestwich, B. L., Taal, M. W., …Francis, S. T. (2020). Quantitative assessment of renal structural and functional changes in chronic kidney disease using multi-parametric magnetic resonance imaging. Nephrology Dialysis Transplantation, 35(6), 955-964. https://doi.org/10.1093/ndt/gfz129

BACKGROUND: Multi-parametric magnetic resonance imaging (MRI) provides the potential for a more comprehensive non-invasive assessment of organ structure and function than individual MRI measures, but has not previously been comprehensively evaluated... Read More about Quantitative assessment of renal structural and functional changes in chronic kidney disease using multi-parametric magnetic resonance imaging.

Short-term changes observed in multi-parametric liver MRI following therapy with direct acting antivirals in chronic hepatitis C virus patients (2018)
Journal Article
Bradley, C., Scott, R., Cox, E., Palaniyappan, N., Thompson, B., Ryder, D., …Francis, S. (2019). Short-term changes observed in multi-parametric liver MRI following therapy with direct acting antivirals in chronic hepatitis C virus patients. European Radiology, 29(6), 3100–3107. https://doi.org/10.1007/s00330-018-5788-1

Methods: We applied multiparametric MRI to assess changes in liver composition, perfusion and blood flow in 17 patients before DAA therapy and after treatment completion (within 12 weeks of last DAA tablet swallowed). Results: We observed changes in... Read More about Short-term changes observed in multi-parametric liver MRI following therapy with direct acting antivirals in chronic hepatitis C virus patients.

Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains (2018)
Journal Article
Aquino, K. M., Sokoliuk, R., Pakenham, D., Sanchez-Panchuelo, R. M., Hanslmayr, S., Mayhew, S. D., …Francis, S. T. (2019). Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher‐order cognitive tasks: An inter‐sensory task directing attention between visual and somatosensory domains. Human Brain Mapping, 40(4), 1298-1316. https://doi.org/10.1002/hbm.24450

Functional MRI at ultra-high field (UHF, ?7T) provides significant increases in BOLD contrast-to-noise ratio (CNR) compared with conventional field strength (3T), and has been exploited for reduced field-of-view, high spatial resolution mapping of pr... Read More about Addressing challenges of high spatial resolution UHF fMRI for group analysis of higher?order cognitive tasks: An inter?sensory task directing attention between visual and somatosensory domains.

Ultra-high-field arterial spin labeling MRI for non-contrast assessment of cortical lesion perfusion in multiple sclerosis (2018)
Journal Article
Drury, R. J., Falah, Y., Gowland, P. A., Evangelou, N., Bright, M. G., & Francis, S. T. (2019). Ultra-high-field arterial spin labeling MRI for non-contrast assessment of cortical lesion perfusion in multiple sclerosis. European Radiology, 29(4), 2027–2033. https://doi.org/10.1007/s00330-018-5707-5

Objectives Assess the feasibility of using an optimised ultra-high-field high-spatial-resolution low-distortion ASL MRI acquisition to measure focal haemodynamic pathology in cortical lesions (CLs) in Multiple Sclerosis (MS). Methods Twelve... Read More about Ultra-high-field arterial spin labeling MRI for non-contrast assessment of cortical lesion perfusion in multiple sclerosis.