The goal of this observational study is to establish preliminary reference values for Endoscopic Ultrasound (EUS)-guided Attenuation Imaging (ATI) and Shear Wave Elastography (SWE) in adults undergoing diagnostic EUS for non-hepatobiliary indications who have normal FibroScan findings. The main questions it aims to answer are:
What are the preliminary normal reference values for EUS-guided ATI in the right and left hepatic lobes? What are the preliminary normal reference values for EUS-guided SWE elasticity (kPa) and velocity (m/s) in the right and left hepatic lobes?
Participants will:
Undergo same-day FibroScan assessment to confirm normal liver stiffness and steatosis parameters.
Undergo EUS-guided ATI and SWE measurements of both the right and left hepatic lobes during their clinically indicated diagnostic EUS examination.
Have demographic, clinical, and laboratory information recorded for analysis.