Validation of the New Vibration-guided FibroScan Examination

This is an European, prospective, interventional, multicenter clinical investigation that will take place in 2 French sites. 100 adults patients will be included. The study objective is to compare the applicability between the Research FibroScan and the reference FibroScan examination performed on the liver.

Chronic liver disease (CLD) is a silent disease that can progress to life-threatening conditions. Hepatitis B (HBV) and C (HCV) viruses, alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD) are the main causes of chronic liver inflammation.

CLDs represent a major public health burden, with global estimates showing around a rate of 2 million deaths per year, including 1 million from complications of cirrhosis and 1 million from viral hepatitis and hepatocellular carcinoma. About 75 million people are diagnosed with alcohol use disorders and are at risk of developing alcohol-related liver disease. About 2 billion adults are obese or overweight and more than 400 million suffer from diabetes; both of which are risk factors for the development of NAFLD and HCC.

NAFLD is currently the leading cause of CLD worldwide with a reported worldwide prevalence of 25% in adults. Early identification among NAFLD patients with non-alcoholic steatohepatatis (NASH) and advanced fibrosis is particularly important as they are at high risk of developing liver complications. The main difficulty in diagnosing NASH patients is related to their symptomatology, which is not always clinically useful because it is not specific. Therefore a screening for advanced stage of NAFLD is recommended in patient at high risk such patients with type 2 diabetes or obesity.

Liver fibrosis is known to be a major prognostic predictor of hepatic and overall mortality in patients with CLD. Therefore, early diagnosis of liver fibrosis is crucial in asymptomatic individuals.

Liver biopsy (LB) is the gold standard diagnostic test for the evaluation of patients with CLD. However, it is difficult to use it as a screening tool given the large number of patients with NAFLD.

The development of non-invasive and broadly applicable screening tools for the assessment of liver fibrosis appears to be a major public health opportunity.

Among the non-invasive tools available, the FibroScan (Echosens™, Paris, France) has proven to be a useful tool for diagnosing fibrosis and steatosis in patients with CLD. FibroScan is a device based on Vibration-Controlled Transient Elastography (VCTE™) technology that measures Liver Stiffness Elasticity (LSM) to assess fibrosis and Controlled Attenuation Parameter (CAP) to assess steatosis.

In this context, Echosens aims to develop a new technology called "Vibration-Guided Transient Elastography (VGTE)" which is an original method that will help FibroScan operators to localize an optimal region of interest for stiffness measurement in a simple and reliable way.

Eligibility Criteria:
Inclusion Criteria:

* Adult patients (age \> = 18 years old) followed for a liver disease; a suspicion of liver disease or for consequences of liver disease, all etiologies combined
* Patient must be able to give written informed consent
* Patient affiliated to a social security system

Exclusion Criteria:

* Vulnerable patient
* Patients with ascites