Shu Chien (traditional Chinese: ??; simplified Chinese: ??; pinyin: Qián Xù; born June 23, 1931 in Beijing, China), is a Chinese–American physiologist and bioengineer.
His work on the fluid dynamics of blood flow has had a major impact on the diagnosis and treatment of cardiovascular diseases such as atherosclerosis.
More recently, Chien's research has focused on the mechanical forces, such as pressure and flow, that regulate the behaviors of the cells in blood vessels.
Chien is currently President of the Biomedical Engineering Society and is one of only 11 scholars who are members of all three U.S.
national institutes: the National Academy of Sciences, National Academy of Engineering, and the Institute of Medicine.