Protocol of quantitative ultrasound techniques for noninvasive assessing of hepatic steatosis after bariatric surgery.

"Conflict of interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest."

"This work was financed by National Natural Science Foundation of China (Grant No. 82171954, 81701697), “Science and Technology Innovation Action Plan” Government-to-Government cooperation project (Grant No. 19410714200), the National Key Research and Development Plan Digital Diagnosis and Treatment Specificity Project (Grant No. 2017YFC0113800), Shanghai Key Discipline of Medical Imaging Fund (Grant No. 2017 ZZ 02005) and Shanghai Key Clinical Disciplines Fund (Grant No. shslczdzk03203)."

"Registration: The trial is duly registered with the Chinese Clinical Trial Registry, and with a unique Trial Registration Number, ChiCTR2300069892, approved on March 28, 2023."