When I read The
Emperor’s New Clothes as a kid, I did not take it seriously. Funny though, I
did not think it would ever happen for that was just the adults’ wild
imagination to fool the kids around. After growing up, I realized this can truly happen in the adults’ world. Jaw droppingly, smart and decent people are
usually involved.

# left ventricular diastolic time constant

## 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.

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.

2020-1-1, response to "response to Bai"

## Saturday, February 15, 2020

## Saturday, February 8, 2020

### Questions Need to be Clarified...

- Why not publish your paper in high AF journals?

Honestly, we tried a
lot and most are failed. There is a dominant Tau non-invasive method
from Harvard. Though the method doesn’t make sense, it made quite a few Tau
“experts” who are always there to kill our papers. It is so easy for them to do
so because they are influential researchers from influential institutions and
they have already published their papers in influential journals. That is why
we are calling for the retraction of these Tau papers with logic flaws. Before
the retraction of fake ones, it is very tough for real ones to be accepted in
high AF journals.

## Saturday, February 1, 2020

### Dr James Thomas, Please Retract Your Tau Papers

According to COPE (Committee
on Publication Ethics)’s Retraction guidelines, your Tau papers should be
retracted since your Tau formula was developed based on FOUR bold assumptions
which inflicted at least two logic flaws:

## Thursday, December 19, 2019

## Sunday, December 8, 2019

### The Good, the Bad and the Ugly

1993, Dr Nishimura put his hand on Tau. In the Table 1 (Comparison of Catheter-Derived and Doppler-Derived Variables for 120 Beats in 15 Patients), his measurement is Tau=58ms, (v1-t3)=48ms. 15 years later, I published the Tau formula Tau=1.2(t1-t3). Here comes a miracle: 58=1.2x48. Dr Nishimura has to command the profound respect of us, how such an accurate measurement is possible! In the meantime, my formula is also validated objectively. Now this formula is integrated into Mindray’s Echo machines sold all over the world except North America. This is the Good.

## Monday, October 16, 2017

## Sunday, October 9, 2011

### A Small Step in Math, A True Stride in Cardiology

With the progress of Doppler and modern computer technology, I believe that only a few RBCs’ leaking will be needed to give us a much understandable and clear regurgitation curve. Theoretically, merely a short part of the curve is enough to calculate the Tau. As long as we are allowed to choose 3 points from within the definition field, we can use the updated formulas to proceed. Let’s assume the 3 points are a (v

_{a}, t_{a}), b (v_{b}, t_{b}) and c (v_{c}, t_{c}) from left to right. The updated formulas are:
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