Expert Consensus Confirms UDFF as Highly Accurate Noninvasive Alternative for Fatty Liver Disease Diagnosis

Fudan University experts confirm UDFF ultrasound technology offers a 90% sensitivity rate for fatty liver diagnosis, providing a biopsy-free path for patients.

By: AXL Media

Published: Mar 17, 2026, 9:03 AM EDT

Source: Information for this report was sourced from Fudan University

Standardizing Noninvasive Diagnostics for Global Liver Health

The rising global incidence of metabolic syndrome and type 2 diabetes has positioned fatty liver disease as a premier public health crisis, necessitating more accessible diagnostic tools. Dr. Huixiong Xu and Dr. Hong Ding of Fudan University led a comprehensive review and expert consensus to formalize the use of Ultrasound Derived Fat Fraction (UDFF) in clinical settings. According to the consensus published in Portal Hypertension & Cirrhosis, this technology provides the objective quantification required to monitor metabolic dysfunction associated steatohepatitis (MASH) without the risks associated with traditional methods.

Moving Beyond the Limitations of Traditional Liver Biopsies

For decades, the medical community has relied on liver biopsies as the gold standard for grading fat accumulation, despite the procedure being invasive, expensive, and frequently hindered by sampling errors. While advanced imaging like MRI-PDFF offers high precision, its high cost and limited availability prevent widespread use in routine screenings. UDFF emerges as a critical bridge, offering a quantitative and objective assessment that combines the accessibility of ultrasound with the rigor of high end magnetic resonance spectroscopy, potentially reshaping how chronic liver conditions are managed.

Superior Reliability and Reproducibility in Multicenter Trials

The validation of UDFF rests on extensive data from prospective multicenter trials and biopsy based studies involving over 1,150 patients. The research team reported that intra and inter operator reliability scores remained consistently high, with correlation coefficients meeting or exceeding 0.94. According to the data, UDFF demonstrated a pooled sensitivity of 90.4 percent and a specificity of 83.8 percent, frequently outperforming conventional ultrasound grading and established serological indices. This level of statistical consistency suggests that UDFF can provide stable results regardless of the technician performing the scan.