Matthew D. Robson
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View article: Automated volumetric MRI quantification of body fat and skeletal muscle in the UK Biobank: technical validation against expert manual segmentations and comparison with single-slice techniques
Automated volumetric MRI quantification of body fat and skeletal muscle in the UK Biobank: technical validation against expert manual segmentations and comparison with single-slice techniques Open
We found robust correlations between manually segmented, automated volumetric, and semi-automated single-slice body composition methods. The interchangeability of these methods suggests that for each application the method should be select…
View article: Weight-related changes in MRI-derived measures of body composition and liver steatosis: a large-scale analysis for obesity trial design
Weight-related changes in MRI-derived measures of body composition and liver steatosis: a large-scale analysis for obesity trial design Open
Background/Objectives: Amid rising global obesity rates and advances in weight-loss therapies, monitoring body composition and ectopic fat could refine trial design. We quantified weight-related changes in body composition and liver steato…
View article: Standardized pancreatic MRI-T1 measurement methods: comparison between manual measurement and a semi-automated pipeline with automatic quality control
Standardized pancreatic MRI-T1 measurement methods: comparison between manual measurement and a semi-automated pipeline with automatic quality control Open
Objectives Scanner-referenced T1 (srT1) is a method for measuring pancreas T1 relaxation time. The purpose of this multi-centre study is 2-fold: (1) to evaluate the repeatability of manual ROI-based analysis of srT1, (2) to validate a semi…
View article: Accurate and precise in vivo liver <scp>3D</scp> <i>T</i> <sub>1</sub> mapping at <scp>3T</scp>
Accurate and precise in vivo liver <span>3D</span> <i>T</i> <sub>1</sub> mapping at <span>3T</span> Open
Purpose To develop an accurate and precise liver 3D mapping method using only scanner‐agnostic sequences. Methods While the spoiled gradient‐recalled echo sequence is widely available on clinical scanners, variable flip angle mapping metho…
View article: Repeatability, Reproducibility, and Observer Variability of Cortical <scp>T1</scp> Mapping for Renal Tissue Characterization
Repeatability, Reproducibility, and Observer Variability of Cortical <span>T1</span> Mapping for Renal Tissue Characterization Open
Background The global rise in kidney diseases underscores the need for reliable, noninvasive imaging biomarkers. Among these, renal cortical T1 has shown promise but further technical validation is still required. Purpose To evaluate the r…
View article: Single-slice MRI for body composition assessment: repeatability, reproducibility, and observer variability
Single-slice MRI for body composition assessment: repeatability, reproducibility, and observer variability Open
Purpose The single-slice MRI at L3 vertebra offers an efficient way to assess body composition but the evidence on the reliability of this method is scarce. This study evaluates the accuracy and precision of this method for adipose and mus…
View article: The effect of and correction for through‐slice dephasing on <scp>2D</scp> gradient‐echo double angle B1+ mapping
The effect of and correction for through‐slice dephasing on <span>2D</span> gradient‐echo double angle B1+ mapping Open
Purpose To show that variations through slice and slice profile effects are two major confounders affecting 2D dual angle maps using gradient‐echo signals and thus need to be corrected to obtain accurate maps. Methods The 2D gradient‐echo …
View article: 10-channel phased-array coil for carotid wall MRI at 3T
10-channel phased-array coil for carotid wall MRI at 3T Open
Background Accurate assessment of plaque accumulation near the carotid bifurcation is important for the effective prevention and treatment of stroke. However, vessel and plaque delineation using MRI can be limited by low contrast-to-noise …
View article: Optimal flip angles for in vivo liver <scp>3D</scp><i>T</i><sub>1</sub> mapping and <i>B</i><sub>1+</sub> mapping at <scp>3T</scp>
Optimal flip angles for in vivo liver <span>3D</span><i>T</i><sub>1</sub> mapping and <i>B</i><sub>1+</sub> mapping at <span>3T</span> Open
Purpose The spoiled gradient recalled echo (SPGR) sequence with variable flip angles (FAs) enables whole liver mapping at high spatial resolutions but is strongly affected by inhomogeneities. The aim of this work was to study how the preci…
View article: Multi-organ impairment and long COVID: a 1-year prospective, longitudinal cohort study
Multi-organ impairment and long COVID: a 1-year prospective, longitudinal cohort study Open
Objectives To determine the prevalence of organ impairment in long COVID patients at 6 and 12 months after initial symptoms and to explore links to clinical presentation. Design Prospective cohort study. Participants Individuals. Methods I…
View article: Cardiac abnormalities in Long COVID 1-year post-SARS-CoV-2 infection
Cardiac abnormalities in Long COVID 1-year post-SARS-CoV-2 infection Open
Background Long COVID is associated with multiple symptoms and impairment in multiple organs. Cross-sectional studies have reported cardiac impairment to varying degrees by varying methodologies. Using cardiac MR (CMR), we investigated a 1…
View article: Estimation of field inhomogeneity map following magnitude-based ambiguity-resolved water-fat separation
Estimation of field inhomogeneity map following magnitude-based ambiguity-resolved water-fat separation Open
Magnitude-based PDFF (Proton Density Fat Fraction) and R2∗ mapping with resolved water-fat ambiguity is extended to calculate field inhomogeneity (field map) using the phase images. The estimation is formulated in matrix form, resolving th…
View article: Novel 10-channel phased-array coil design for carotid wall MRI at 3T
Novel 10-channel phased-array coil design for carotid wall MRI at 3T Open
Background Accurate assessment of plaque accumulation near the carotid bifurcation is important for the effective prevention and treatment of stroke. However, vessel and plaque delineation using MRI can be limited by low contrast-to-noise …
View article: Estimation of Field Inhomogeneity Map Following Magnitude-Based Ambiguity-Resolved Water-Fat Separation
Estimation of Field Inhomogeneity Map Following Magnitude-Based Ambiguity-Resolved Water-Fat Separation Open
PURPOSE: To extend magnitude-based PDFF (Proton Density Fat Fraction) and $R_2^*$ mapping with resolved water-fat ambiguity to calculate field inhomogeneity (field map) using the phase images. THEORY: The estimation is formulated in matrix…
View article: Data from: Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity
Data from: Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity Open
These data have been uploaded and shared as part of "Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity". The data may be used for field inhomogeneity mapping and PDFF/R2* re…
View article: Data from: Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity
Data from: Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity Open
These data have been uploaded and shared as part of "Robust Estimation of Field Inhomogeneity Map Following Magnitude-Based Water-Fat Separation with Resolved Ambiguity". The data may be used for field inhomogeneity mapping and PDFF/R2* re…
View article: The Additive Value of Cardiovascular Magnetic Resonance in Convalescent COVID-19 Patients
The Additive Value of Cardiovascular Magnetic Resonance in Convalescent COVID-19 Patients Open
In COVID-19 the development of severe viral pneumonia that is coupled with systemic inflammatory response triggers multi-organ failure and is of major concern. Cardiac involvement occurs in nearly 60% of patients with pre-existing cardiova…
View article: Cardiac impairment in Long Covid 1-year post-SARS-CoV-2 infection
Cardiac impairment in Long Covid 1-year post-SARS-CoV-2 infection Open
Background Long Covid is associated with multiple symptoms and impairment in multiple organs. Cardiac impairment has been reported to varying degrees by varying methodologies in cross-sectional studies. Using cardiac magnetic resonance (CM…
View article: Multi-organ impairment and Long COVID: a 1-year prospective, longitudinal cohort study
Multi-organ impairment and Long COVID: a 1-year prospective, longitudinal cohort study Open
Importance Multi-organ impairment associated with Long COVID is a significant burden to individuals, populations and health systems, presenting challenges for diagnosis and care provision. Standardised assessment across multiple organs ove…
View article: Water-Only Look-Locker Inversion recovery (WOLLI) T<sub>1</sub> mapping
Water-Only Look-Locker Inversion recovery (WOLLI) T<sub>1</sub> mapping Open
Purpose Modified Look-Locker Inversion recovery (MOLLI) and Shortened MOLLI (ShMOLLI) T 1 values can deviate substantially from the water T 1 in voxels containing large amounts of water and fat. We introduce Water-Only Look-Locker Inversio…
View article: Emerging artificial intelligence applications in liver magnetic resonance imaging
Emerging artificial intelligence applications in liver magnetic resonance imaging Open
Chronic liver diseases (CLDs) are becoming increasingly more prevalent in modern society. The use of imaging techniques for early detection, such as magnetic resonance imaging (MRI), is crucial in reducing the impact of these diseases on h…
View article: Hydration and glycogen affect T<sub>1</sub> relaxation times of liver tissue
Hydration and glycogen affect T<sub>1</sub> relaxation times of liver tissue Open
T 1 mapping is a useful tool for the assessment of patients with nonalcoholic fatty liver disease but still suffers from a large unexplained variance in healthy subjects. This study aims to characterize the potential effects of liver glyco…
View article: Navigator‐based reacquisition and estimation of motion‐corrupted data: Application to multi‐echo spin echo for carotid wall MRI
Navigator‐based reacquisition and estimation of motion‐corrupted data: Application to multi‐echo spin echo for carotid wall MRI Open
Purpose To assess whether artifacts in multi‐slice multi‐echo spin echo neck imaging, thought to be caused by brief motion events such as swallowing, can be corrected by reacquiring corrupted central k‐space data and estimating the remaind…
View article: Non-invasive assessment of portal hypertension by multi-parametric magnetic resonance imaging of the spleen: A proof of concept study
Non-invasive assessment of portal hypertension by multi-parametric magnetic resonance imaging of the spleen: A proof of concept study Open
Spleen cT1 is a promising biomarker of portal pressure that outperforms other non-invasive scores and should be explored further.
View article: Scattering matrix imaging pulse design for real‐time respiration and cardiac motion monitoring
Scattering matrix imaging pulse design for real‐time respiration and cardiac motion monitoring Open
Purpose The scattering matrix (S‐matrix) of a parallel transmit (pTx) coil is sensitive to physiological motion but requires additional monitoring RF pulses to be measured. In this work, we present and evaluate pTx RF pulse designs that si…
View article: 5 Inter individual variations in LDL-C and carotid plaque lipid content with statin and the impact of plaque burden on plaque lipid reduction
5 Inter individual variations in LDL-C and carotid plaque lipid content with statin and the impact of plaque burden on plaque lipid reduction Open
Introduction Little is known about the variations in atherosclerotic lipid content when juxtaposed to changes LDL-c in response to statin treatment. T2 mapping is a recently-validated magnetic resonance imaging (MRI) technique that can pre…