Such as: in 1989 - there was a moment, a very short one, where the recorded time was:
01:23:45 6-7-89
That would have been the moment to propose, put down the big bet, etc. Interesting.
I am now wondering if the beginning of today's blog portends to be how I will use my retirement moments...ha.
I am hoping not, that there will be a greater return on my investment of golden time.
"Time is the coin of
your life. It is the only coin you have, and only you can determine how
it will be spent. Be careful, lest you let other people spend it for
you."
- Carl Sandburg
Up early today - have a medical test first thing. A lot more serious things to be thankful for than time fluff.
Doppler echocardiography is a procedure which uses ultrasound technology to examine the heart and blood vessels.[1] An echocardiogram uses high frequency sound waves to create an image of the heart while the use of Doppler technology allows determination the speed and direction of blood flow by utilizing the Doppler effect.
An echocardiogram can, within certain limits, produce accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, any abnormal communications between the left and right side of the heart, any leaking of blood through the valves (valvular regurgitation), calculation of the cardiac outputand calculation of E/A ratio[2] (a measure of diastolic dysfunction). Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.
Although "Doppler" has become synonymous with "velocity measurement" in medical imaging, in many cases it is not the frequency shift (Doppler shift) of the received signal that is measured, but the phase shift (when the received signal arrives).
rlw
