WOMENS-HEALTH Messages for February, 1999: Re: doppler on US -- Dr McIntosh

Re: doppler on US -- Dr McIntosh

From: AMD (anonymous@obgyn.net)
Sat, 13 Feb 1999 11:55:55 -0600 (CST)

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Lisa: "Yeast Infection - Men"
Previous message: Lynda: "Ablation or other alternatives for abdominal surgury for menopasual bleeding"
In reply to: William D. McIntosh, MD: "Re: doppler on US"
Next in thread: Angela: "Re: Timing of perimenopausal FSH testing (and a couple more questions)"

Dr. McIntosh -- You certainly remember more of your college physics than I do -- my memory is limited to F=ma and PV=nRT (and it's only been 10 years for me)!

I guess it takes some practice to look at those color patterns and make a reasonable interpretation. It just looked like the inside of a kaleidoscope to me! There were some points where there was a distinct blue/red split pattern, but mostly just a little bit of everything.

Thanks for your informative answer!

Andrea

At Sat, 13 Feb 1999, William D. McIntosh, MD wrote: >
>At Fri, 12 Feb 1999, AMD wrote:
>>
>>During my US, the technician switched to what she called "doppler": once
>>over the placenta and once over the baby. It is my understanding that
>>it somehow measures bloodflow. There were a bunch of different colors
>>like what you would see on doppler radar for the weather. What do these
>>different colors represent? Velocity of blood flow, density, direction?
>>What is the usefulness of the doppler study?
>>
>>Andrea
>
>I will reach way back to my college physics for this one, but the
>Doppler effect is the way we perceive something that is moving towards
>us to have an increased frequency of the measured variable (sound wave,
>light wave, and so on), and a decreased frequency when moving away. For
>example, the sound of a train. As it approaches you, the sound rises in
>pitch, and then "dopplers down" as the train passes.
>
>The "Doppler" on the U/S does the same thing with blood flow. The
>direction of flow (toward the transducer, or away from the transducer)
>is reflected in colors, shades of red and blue. The cool thing is that
>what you are really looking at is blood flow, specifically its velocity.
>This information can provide reassurance of fetal well being.
>
>--
>William D. McIntosh, MD
>Clarksville, TN
>
>This is for educational purposes only. It is not intended
> to replace consultation and examination by your physician
> or other health care provider.
>

Next message: Lisa: "Yeast Infection - Men"
Previous message: Lynda: "Ablation or other alternatives for abdominal surgury for menopasual bleeding"
In reply to: William D. McIntosh, MD: "Re: doppler on US"
Next in thread: Angela: "Re: Timing of perimenopausal FSH testing (and a couple more questions)"

Women's Insurance Checklist from Auto Insurance Quote

use when must restrict search to only the women's health forum...
Enter search keywords:
	Returns per screen: Require all keywords: