· The theory is wrong.
Is Tau dispensable?
Left ventricular diastolic time constant, Tau is the most established index to describe diastolic function. A Harvard method of Tau was invented by Dr JD Thomas has been dominant non-invasive Tau measurement for more than two decades. Now, Tau is dead clinically. Only when the logically flawed celebrity method is objectively reassessed and discarded, can Tau be given a chance. A new method is dawning and promising…
A Brief History of Tau with Links You Might Need!
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, 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.
Saturday, April 10, 2021
Saturday, March 13, 2021
For many years, the Doppler spectrum was measured manually in most of times. Their shortcomings include time-consuming, less accuracy and unacceptable variation between operators. A promising automatic measurement is dawning thanks to the Doppler spectrum enveloping widely used in vascular ultrasound, yet the technology needs dramatically improved. In the point of view of engineering, a more accurate measurement is doable with the neck breaking developing computer technology. This issue is overlooked mainly for sake of barely no clinical demand. And now, it is brought in front of us due to measurement of Tau. Tau, left ventricular diastolic time constant is an established best index to describe diastolic function. The non-invasive measurement of tau theory is perfect, [1,5] the practice lags behind because the Doppler measurement accuracy is not satisfactory. From other point of view, less accurate measurement can lead to weird conclusions, even for some celebrities. [6,7]
Wednesday, January 27, 2021
Sunday, December 13, 2020
Wednesday, November 11, 2020
Dear Dr Thomas,
This is the 7th letter to you. Because all the previous ones were ignored, it might be a good idea to go public.
Inspired by the recent American election, let’s give each other a chance by exchanging ideas.