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publicAug 2025View details →

Data from: Characterization of fluid occurrence states in Shale reservoirs: Centrifugal-nuclear magnetic resonance experimental analysis

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publicOct 2025View details →

Data from: Isoflurane anesthesia alters 31P magnetic resonance spectroscopy markers compared to awake mouse brain

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publicJul 2022View details →

Date advanced functional nuclear magnetic resonance techniques for pediatric population diagnosed with Attention Deficit Hyperactivity Disorder

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publicFeb 2023View details →

Solid-state nuclear magnetic resonance data from: Covalent organic frameworks for carbon dioxide capture from air

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opencc-zeroAug 2020View details →

Data from: Headache study: The management of chronic headache with referral from primary care to direct access to Magnetic Resonance Imaging (MRI) compared to Neurology services: an observational prospective study in London

Objectives. To evaluate the cost, accessibility and patient satisfaction implications of two clinical pathways used in the management of chronic headache. Intervention. Management of chronic headache following referral from Primary Care that differed in the first appointment, either a Neurology appointment or an MRI brain scan. Design and setting. A pragmatic, non-randomised, prospective, single-center study at a Central Hospital in London. Participants. Adult patients with chronic headache referred from Primary to Secondary Care. Primary and secondary outcome measures. Participants' use of health care services and costs were estimated using primary and secondary care databases and questionnaires quarterly up to 12 months post-recruitment. Cost analyses were compared using generalised linear models (GLM). Secondary outcomes assessed: access to care, patient satisfaction, headache burden and self-perceived quality of life using headache-specific (MIDAS, HIT-6) and a generic questionnaire (EQ-5D-5L). Results. Mean (SD) cost up to 6 months post-recruitment per participant was £578 (£420) for the Neurology group (n=128) and £245 (£172) for the MRI group (n=95), leading to an estimated mean cost difference of £333 (95% CI £253 to £413, p<0.001). The mean cost difference at 12 months increased to £518 (95% CI £401 to £637, p<0.001). When adjusted for baseline and follow-up imbalances between groups, this remained statistically significant. The utilisation of brain MRI improved access to care compared to the Neurology group (p<0.001). Participants in the Neurology group reported higher levels of satisfaction associated with the pathway and led to greater change in care management. Conclusion. Direct referral to brain MRI from Primary Care led to cost-savings and quicker access to care but lower satisfaction levels when compared with referral to Neurology services. Further research into the use of brain MRI for a subset of patient population more likely to be reassured by a negative brain scan should be considered.

opencc-by-4.0Jul 2020View details →

Silicon-29 NMR Experimental Datasets used in Statistical Learning of NMR tensors from 2D Isotropic/Anisotropic Correlation Nuclear Magnetic Resonance Spectra

Processed silicon-29 Magic-Angle Flipping and Magic-Angle Turning Nuclear Magnetic Resonance spectra used as input to the smooth-LASSO linear inversion algorithm along with their corresponding NMR tensor parameter distributions as described in the paper "Statistical Learning of NMR tensors from 2D Isotropic/Anisotropic Correlation Nuclear Magnetic Resonance Spectra", by Srivastava and Grandinetti.   Files with names containing "MAF" or "MAT" are the corresponding experimental Si-29 NMR MAF or MAT dataset on the composition given in the filename.  Files with names containing "inverse" are the corresponding NMR tensor parameter distributions obtained from the inversion of the corresponding experimental MAF and MAT dataset with the composition given in the filename.     Details of the csdf dataset format are given in <a href="https://doi.org/10.1371/journal.pone.0225953">PLOS ONE, 15(1): e0225953 (2020)</a>, "Core Scientific Dataset Model: A lightweight and portable model and file format for multi-dimensional scientific data," D. Srivastava, T. Vosegaard, D. Massiot, and P.J. Grandinetti.  The data within csdf files can be accessed with the Python package <a href="https://csdmpy.readthedocs.io/en/stable">csdmpy</a>, or other CSDM-compliant software.

opencc-zeroDec 2018View details →

Data from: The demanding grey zone: sport indices by cardiac magnetic resonance imaging differentiate hypertrophic cardiomyopathy from athlete's heart

Background: We aimed to characterize gender specific left ventricular hypertrophy using a novel, accurate and less time demanding cardiac magnetic resonance (CMR) quantification method to differentiate physiological hypertrophy and hypertrophic cardiomyopathy based on a large population of highly trained athletes and hypertrophic cardiomyopathy patients. Methods and Results: Elite athletes (n=150,>18 training hours/week), HCM patients (n=194) and athletes with hypertrophic cardiomyopathy (n=10) were examined by CMR. CMR based sport indices such as maximal end-diastolic wall thickness to left ventricular end-diastolic volume index ratio (EDWT/LVEDVi) and left ventricular mass to left ventricular end-diastolic volume ratio (LVM/LVEDV) were calculated, established using both conventional and threshold-based quantification method. Whereas 47.5% of male athletes, only 4.1% of female athletes were in the grey zone of hypertrophy (EDWT 13-16mm). EDWT/LVEDVi discriminated between physiological and pathological left ventricular hypertrophy with excellent diagnostic accuracy (AUCCQ:0.998, AUCTQ:0.999). Cut-off value for LVM/LVEDVCQ<0.82 mm×m2/ml and for EDWT/LVEDViTQ<1.27 discriminated between physiological and pathological left ventricular hypertrophy with a sensitivity of 77.8% and 89.2%, a specificity of 86.7% and 91.3%, respectively. LVM/LVEDV evaluated using threshold-based quantification performed significantly better than conventional quantification even in the male subgroup with EDWT between 13-16mm (p<0.001). Conclusions: Almost 50% of male highly trained athletes can reach EDWT of 13 mm. CMR based sport indices provide an important tool to distinguish hypertrophic cardiomyopathy from athlete's heart, especially in highly trained athletes in the grey zone of hypertrophy.

opencc-zeroOct 2019View details →

Magnetic resonance imaging reveals human brown adipose tissue is rapidly activated in response to cold

Context. In rodents, cold exposure induces the activation of brown adipose tissue (BAT) and the induction of intracellular triacylglycerol (TAG) lipolysis. However, in humans, the kinetics of supraclavicular (SCV) BAT activation and the potential importance of TAG stores remain poorly defined. Objective. To determine the time course of BAT activation and changes in intracellular TAG using magnetic resonance imaging (MRI) assessment of the SCV (i.e. BAT depot) and fat in the posterior neck region (i.e. non BAT). Design. Cross-sectional. Setting. Clinical research centre. Patients or Other Participants. Twelve healthy male volunteers ages 18-29 years [BMI=24.7±2.8kg/m2 and body fat percentage = 25.0±7.4% (both mean±SD)]. Intervention(s). Standardized whole-body cold exposure (180 minutes at 18°C) and immediate re-warming (30 minutes at 32°C). Main Outcome Measure(s). Proton density fat fraction (PDFF) and T2* of the SCV and posterior neck fat pads. Acquisitions occurred at 5-15 minute intervals during cooling and subsequent warming. Results. SCV PDFF declined significantly after only 10 minutes of cold exposure [-1.6% (standard error (SE) 0.44%), p=0.007) and continued to decline until 35 minutes after which time it remained stable until 180 minutes. A similar time course was also observed for SCV T2*. In the posterior neck fat (non-BAT) there were no cold-induced changes in PDFF or T2*. Re-warming did not result in a change in SCV PDFF or T2*. Conclusions. The rapid cold-induced decline in SCV PDFF suggests that in humans, BAT is activated quickly in response to cold and that TAG is a primary substrate.

Fig. 4 in Nuclear Magnetic Resonance Microscopy of The Internal Structure of the Carrion Rolling Scarab Canthon cyanellus cyanellus (Scarabaeidae: Scarabaeinae)

Fig. 4. Two-dimensional surface reconstruction of gradient echo images of Canthon cyanellus cyanellus adult males. a) Young male; b) mature unmated male; c) mature mated: (1) gut; (2) pygidial glands; (3) phallobase; (4) parameres; (5) genital chamber.

Fig. 2 in Nuclear Magnetic Resonance Microscopy of The Internal Structure of the Carrion Rolling Scarab Canthon cyanellus cyanellus (Scarabaeidae: Scarabaeinae)

Fig. 2. Two-dimensional slices of a mature female imaged with NMR microscopy. The sequence (a–f) goes from ventral region to dorsum; median longitudinal slices (d) of the specimens analyzed are presented in this paper: (1) gut; (2) pygidial glands; (3) egg.

Fig. 1. A in Nuclear Magnetic Resonance Microscopy of The Internal Structure of the Carrion Rolling Scarab Canthon cyanellus cyanellus (Scarabaeidae: Scarabaeinae)

Fig. 1. A) Canthon cyanellus cyanellus, a carrion rolling beetle; B) schematic diagram of beetle orientation in relation to the static magnetic field.

Fig. 3 in Nuclear Magnetic Resonance Microscopy of The Internal Structure of the Carrion Rolling Scarab Canthon cyanellus cyanellus (Scarabaeidae: Scarabaeinae)

Fig. 3. Two-dimensional surface reconstruction of gradient echo images of Canthon cyanellus cyanellus adult females. a) Immature female; b) mature female mated 24 h before the NMR experiment; c) mature female mated some days before; d) female with an egg ready to be deposed in the brood ball; e) old female; f) female that had died recently: (1) gut; (2) pygidial glands; (3) ovum; (4) spermatophore; (5) egg.

opencc-by-4.0Apr 2024View details →

Dataset of synthetic, maturation-informed magnetic resonance images of the human fetal brain

This dataset gathers synthetic-yet-highly-realistic T2-weighted magnetic resonance images (MRI) of the fetal brain based on the latest development of our prototype Fetal Brain magnetic resonance Acquisition Numerical phantom that now simulates local heterogeneities within white matter tissues throughout maturation (FaBiAN v2.0). This dataset is associated with the following paper: - Lajous H. et al. (2024) A dataset of synthetic, maturation-informed magnetic resonance images of the human fetal brain. Submitted to Nature Scientific Data, Pre-print available https://doi.org/10.1101/2024.04.08.588566 We propose this unique, extensive fetal MRI dataset of simulated standard clinical fast spin echo sequences in both healthy and pathological neurodevelopmental trajectories to address data scarcity in this sensitive population, and therefore support the continuous endeavor of the community to develop advanced post-processing methods as well as cutting-edge artificial intelligence models. Automated brain tissue annotations of the two-dimensional, low-resolution series as well as super-resolution (SR) reconstructions of the fetal brain volumes are also included. Work using any of these data should cite the following references: <ul> <li>Lajous, H. et al. A dataset of synthetic, maturation-informed magnetic resonance images of the human fetal brain. Submitted to Nature Scientific Data (2024), https://doi.org/10.1101/2024.04.08.588566</li> <li>Lajous, H. et al. Dataset of synthetic, maturation-informed magnetic resonance images of the human fetal brain. Zenodo (2024). 10.5281/zenodo.10940427</li> <li>Lajous, H., le Boeuf Fló, A., Esteban, O. & Bach Cuadra, M. Medical-Image-Analysis-Laboratory/FaBiAN: FaBiAN v2.0 (2.0). Zenodo (2023), 10.5281/zenodo.5471094</li> </ul> This work was supported by the Swiss National Science Foundation through grant 182602, and by the ProTechno Foundation. We acknowledge access to the facilities and expertise of the CIBM Center for Biomedical Imaging, a Swiss research center of excellence founded and supported by Lausanne University Hospital (CHUV), University of Lausanne (UNIL), Ecole Polytechnique Fédérale de Lausanne (EPFL), University of Geneva (UNIGE) and Geneva University Hospitals (HUG). Medical Image Analysis Laboratory - Department of Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL), Lausanne, Switzerland & CIBM Center for Biomedical Imaging. 2024. Note: Terms of use for the original cohort (Fidon, L., Aertsen, M., Emam, D., et al. Label-set Loss Functions for Partial Supervision: Application to Fetal Brain 3D MRI Parcellation. MICCAI, 2021) are for research and education purposes only.

opencc-by-4.0Mar 2022View details →

Spinal changes after 5-day dry immersion as shown by magnetic resonance imaging (DI-5-CUFFS)

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opencc-by-4.0Apr 2022View details →

Magnetic Resonance Features of Liver Mucinous Colorectal Metastases: what the radiologist should know

I uploaded the images of the manuscript "Magnetic Resonance Features of Liver Mucinous Colorectal Metastases: what the radiologist should know" with the aim to asssess MRI features of mucinous liver metastases compared to non-mucinous metastases and hepatic hemangioma.

opencc-by-4.0Apr 2022View details →

Radiomics and Machine Learning Analysis Based on Magnetic Resonance Imaging in the Assessment of Colorectal Liver Metastases Growth Pattern

I upload the images of the manuscript "Radiomics and Machine Learning Analysis Based on Magnetic Resonance Imaging in the Assessment of Colorectal Liver Metastases Growth Pattern".

opencc-by-4.0May 2022View details →

Radiomics and machine learning analysis based on magnetic resonance imaging in the assessment of liver mucinous colorectal metastases

I uploaded the images of the manuscript Radiomics and machine learning analysis based on magnetic resonance imaging in the assessment of liver mucinous colorectal metastases.

opencc-zeroOct 2022View details →

Correlation analysis of epicardial adipose tissue and ventricular myocardial strain in Chinese amateur marathoners using cardiac magnetic resonance

The volume of epicardial adipose tissue (EAT) is associated with an increased incidence of cardiovascular disease (CVD); however, only a few studies have examined its effect on the myocardial function of endurance in athletes. The association between the EAT and the variation of myocardial function is still unclear in amateur marathoners. Consequently, by using some sedentary individuals as the control, this study aims to evaluate the correlation between the EAT volume and the myocardial strain in the left and right ventricles of Chinese amateur marathoners by cardiac magnetic resonance (CMR).The volume of epicardial adipose tissue (EAT) is associated with an increased incidence of cardiovascular disease (CVD); however, only a few studies have examined its effect on the myocardial function of endurance in athletes. The association between the EAT and the variation of myocardial function is still unclear in amateur marathoners. Consequently, by using some sedentary individuals as the control, this study aims to evaluate the correlation between the EAT volume and the myocardial strain in the left and right ventricles of Chinese amateur marathoners by cardiac magnetic resonance (CMR).

opencc-by-4.0May 2024View details →

Search Strategies for the Generic Justification Evidence Synthesis: magnetic resonance guided radiotherapy

The dataset includes the complete, reproducible search strategies for all bibliographic databases searched during this project. The search strategies were designed to answer the following research questions:  RQ1. In patients with cancer requiring radiotherapy, does the choice of image-guided modality (MRgRT versus other) result in a difference in clinical effectiveness? RQ2. In patients with cancer requiring radiotherapy, does the choice of image-guided modality (MRgRT versus other) result in a difference in potential harms?