A Prospective Study to Monitor Liver Diseases Dynamically by Ultrasound Viscoelasticity
CirrhosisLiver DiseasesThe accuracy of ultrasound elastography for assessing liver fibrosis by measuring liver stiffness (elastic modulus) is better than traditional method. Elastography has certain advantage such as non-invasive, simple, real-time and it has been recommended by clinical guidelines. However, some chanllenging scientific problems showed up with further research and clinical practice. Firstly, present elastography machines can only calculate liver stiffness from shear wave speed or elastic modulus but ignore other physical characteristics such as tissue viscosity. So far, present technique simply assume liver as an idealized model with isotropic elasticity to assess liver fibrosis while liver is actually anisotropic and viscoelastic. What's more, theoretically, there are not only different solid state structures such as cell organization and vessel but also flowing liquid such as blood and bile. Thus, ignoring viscosity and evaluating elasticity only is unreasonable. In the other hand, a number of confounding factors have been found to influence liver stiffness measurement by elastography. Different pathological chang of liver including inflammation, necrosis, cholestasis and inhomogeneity among the individuals such as obesity, ascites, et,al. will decrease the accuracy of liver stiffness measurement and liver fibrosis staging by elastography. In fact, liver fibrosis is a dynamic process. Liver fibrosis is a reaction of compensation and repair for inflammation and necrosis as well as a contributing factor for liver damage. This dynamic process constitutes the common characteristic of chronic liver disease and result in the complicated biological mechanical characteristics of liver. In consequence, how to measure liver viscosity and elasticity respectively, and to evaluate liver fibrosis stage and Inflammation degree accurately during the complicated and dynamic pathological process is the key scientific problem demanding solution, which is also the urgent requirement of related fundamental research and clinical practice. Therefore, this project plan to apply LOGIQ E viscoelastography machine as research tool, rat liver fibrosis model and rat liver failure model as research object to investigate the correlation between liver viscoelastography measurement and liver fibrosis stage and Inflammation degree. The investigators also aim to assess the feasibility of using ulstrasound viscoelastography to evaluate liver fibrosis stage and Inflammation degree dynamically.
The Second COVID-19 Wave: Collateral Impact on Patients of Liver Disease
Liver DiseasesHospital record of the patients of liver disease admitted from April-May 2021 and April-May 2019 will be reviewed. Patients will be analyzed and compared for the demographic characteristics, severity of liver disease at time of admission and outcome in form of survival or mortality, liver transplantation rates in the two time periods and the subsequent 30 d and 90 day readmission rate. Monitoring and assessment: Hospital records of all patients of liver disease needing admission during the April-May 2019 and 2021, but without active COVID-19 infection, will be reviewed. Patients will be analyzed and compared for the demographic characteristics, severity of liver disease at time of admission and outcome in form of survival or mortality, liver transplantation rates in the two time periods and 30 d and 90 d readmission rate.
Non-Alcoholic Fatty Liver Disease and Anthropometric Measurements
Non-Alcoholic Fatty Liver DiseaseThe aim of this study; Which anthropometric measurement and ratio (BMI, waist circumference, hip circumference, waist-to-hip ratio, neck circumference, waist-height ratio, body shape index, body roundness index, visceral adiposity index) is a better indicator in healthy individuals with NAFLD and their biochemical parameters is to evaluate.
Breath Analysis Using an Electronic Nose in Non Alcoholic Fatty Liver Disease
Non-alcoholic Fatty Liver DiseaseThe purpose of this is to analyse human exhaled breath by means of a device called electronic nose(eNose) in patients with non-alcoholic fatty liver disease (NAFLD) as a way to non-invasive assessment of liver disease.This device is medically adapted and clinically validated in patients with lung conditions.
Half-life of Plasma Phytosterols in Preterm Infants on Parenteral Nutrition
Liver DiseasesThe purpose of this study is to determine plasma phytosterols half-lives in preterm infants who received intravenous soy oil-based lipid emulsions.
Compassionate Use of Omegaven IV Fat Emulsion
CholestasisLiver DiseaseThis protocol involves the compassionate use of intravenous fish oil infusion, Omegaven. The protocol involves infants and children with parenteral nutrition-associated liver disease to enable the reversal of elevated serum liver enzymes and direct bilirubin (cholestasis).
Controlled Attenuation Parameter (CAP) in Liver Allografts
Liver TransplantLiver Steatosis3 moreThe primary aim is to determine the accuracy of CAP in the quantification of liver steatosis using liver biopsies as reference. Secondarily, investigators will correlate transient elastography (TE) and CAP results, analyze possible associations between CAP/TE and post-liver transplant (LT) clinical outcomes, and evaluate the change in CAP after LT. The study aims to include as many donors as needed to achieve at least 120 transplanted liver allografts.
Application of 3D Visualization and 3D Printing in the Hepatobiliary and Pancreatic Surgery
Liver DiseasesPancreatic Diseases1 moreBackground:The aim of the study is to value the application of three-dimensional visualization and three-dimensional printing in the hepatobiliary and pancreatic surgery.Method:From January 2016 to December 2018,the clinical data of 200 patients with the hepatobiliary and pancreatic diseases will be collected.All the patients received abdominal CT scanning and 3D reconstruction. Then we used the 3D reconstruction model and the 3D printed model based on the 3D reconstruction model in the operation planning and the operation.The clinical data include operative time, intraoperative blood loss,and postoperative complications after surgery.
Biomarkers for the Detection of Heavy Alcohol Use in Patients With and Without Liver Disease
Alcohol AbuseLiver DiseaseThe investigators will test the validity of biomarkers for the detection of heavy alcohol use in patients with and without liver disease.
Standardized CEUS Algorithms for Diagnosis of HCC - Prospective German Multicenter Study
Hepatocellular CarcinomaCholangiocarcinoma5 moreAim of this prospective national multicenter study is to improve standardization of contrast-enhanced ultrasound (CEUS) in the non-invasive diagnosis of hepatocellular carcinoma (HCC) in high-risk patients. The study is funded by the German Society for Ultrasound in Medicine (DEGUM).