Hepatic Doppler Perfusion Index in Healthy Adults: Standardization, Physiological Reference Limit, and Clinical Perspectives. - Lueders, Christian; Gladitz, Johannes; Eckstein, Nils; Schulz, Judith; Kiefer, Thomas; Völler, Heinz; Weylandt, Carsten-Heinrich; Merkel, Daniel (Diagnostics (2075-4418), 2026)