Tau is the most established index to describe diastolic function. Its measurement was commercialized in China in 2017, while in America it is demised in daily clinic. Why?

A Brief History of Tau with Links You Might Need!

A Brief History of Tau

1976, Tau was born in John Hopkins.
1992, the first non-invasive try, Harvard.
1992, the first formula, with four assumptions, Harvard.
1993, another non-invasive try with decent data, Mayo Clinic.
1995, a similar strategy applied to AI patients, Japan.
1995, I published a MR based formula with one assumption.
1997, the Harvard formula was validated in Cleveland.
2005, Langer presented a non-zero asymptote model.
2008, I improved my MR based formulas, without assumption.
2008, I did a similar deduction for AI based Tau.
2008, Chen developed program for my formulas, free download.
2008, my poster in ASE 19th Annual Scientific Sessions.
2009, my poster in CSE forum.
2009, DF guideline (ASE) recommended Harvard formula.
2009, I gave my opinion about the guideline recommendation.
2009, "Response to Bai" from guideline writing group. It motivated me to create this Blog.
2010, Dr Wang and me presented general Tau.
2011-11-29, I gave a talk in National Capital Echo Round (Ottawa)
2016-03-29, I gave a talk at the Heart Institute, the North Hospital (Shenyang, China)
2016-04-01, I gave a talk at the Cardiac Function Dept., the 1st Clinical College, Chinese University of Medicine. (Shenyang, China)
2016, Symmetry inspired by the approach of Tau.
2017, Calculation of LAP (based on my formulas) got a Chinese Natural Science Founding.
2024, JASE declined my Tau manu again.

Thursday, April 24, 2025

Urgent Call to Include Tau in the Upcoming ASE Diastolic Function Guideline

To:

Members of the ASE Executive Committee,

Members of ASE guidelines and standards committee,

Cc:kleina@ccf.org,Nagueh Sherif M.D

 

Sunday, June 28, 2020

Tau Measurement in an Echo lab


Tau occurs during the isovolumic relaxation time (IVRT), when both the mitral and aortic valves are closed. To investigate any events within the left ventricle during this phase, we must rely on information provided by either mitral regurgitation (MR) or aortic insufficiency (AI).