Publications by authors named "D Olivie"
Objective: To assess the reproducibility of six ultrasound (US)-determined shear wave (SW) viscoelastography parameters for assessment of mechanical properties of the liver in volunteers and patients with biopsy-proven metabolic dysfunction-associated steatotic liver disease (MASLD) or metabolic dysfunction-associated steatohepatitis (MASH).
Methods: This prospective, cross-sectional, institutional review board-approved study included 10 volunteers and 20 patients with MASLD or MASH who underwent liver US elastography twice, at least 2 weeks apart. SW speed (SWS), Young's modulus (E), shear modulus (G), SW attenuation (SWA), SW dispersion (SWD), and viscosity were computed from radiofrequency data recorded on a research US scanner.
Chronic liver disease is highly prevalent and often leads to fibrosis or cirrhosis and complications such as liver failure and hepatocellular carcinoma. The diagnosis and staging of liver fibrosis is crucial to determine management and mitigate complications. Liver biopsy for histologic assessment has limitations such as sampling bias and high interreader variability that reduce precision, which is particularly challenging in longitudinal monitoring.
View Article and Find Full Text PDFPurpose: Prior studies have described complications of radiofrequency ablation (RFA) of liver tumours. The aim of this study was to identify risk factors for hospitalization duration longer than 24 hours following RFA of liver tumours.
Methods: This retrospective, single-centre study included patients with liver tumours undergoing RFA between October 2017 and July 2020.
Article Synopsis
- Biomass burning (BB) emits aerosols that significantly influence climate factors like radiation balance and cloudiness in tropical areas, but there's a lot of uncertainty in assessments due to reliance on global models.
- By using observations from both satellite and ground sources, researchers constrained the aerosol absorption optical depth (AAOD) specifically in the Amazon and Africa, identifying major error sources for each region.
- The study found that correcting these errors can reduce differences in aerosol radiative effects among models by threefold, suggesting a stronger potential for improving the understanding of radiative forcing from biomass burning aerosols.
Objective: The aims of the work described here were to assess shear wave attenuation (SWA) in volunteers and patients with non-alcoholic fatty liver disease (NAFLD) and compare its diagnostic performance with that of shear wave dispersion (SWD), magnetic resonance imaging (MRI) proton density fat fraction (PDFF) and biopsy.
Methods: Forty-nine participants (13 volunteers and 36 NAFLD patients) were enrolled. Ultrasound and MRI examinations were performed in all participants.