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Re: Yolk sac From: DuBose, Terry (DuboseTerryJ@exchange.uams.edu) Wed Jan 27 15:32:54 1999 Messages sorted by: [ date ][ thread ][ subject ][ author ] Next message: Laura Youngblood: "Re: Fetal Cerebral Ventricles" Previous message: Joseph A Worrall MD RDMS: "Re: Yolk sac" The physics of specular echoes would indicate the leading edge method should be the most consistent (like the BPD). The trailing edge is sometimes a bit displaced by reverberation. However, I have never heard anyone discuss this relative to the yolk sac because reverb is less of a problem. The leading edge method is the equivalent to a "mid" wall, neither outer or inner. Don't mean to complicate the issue, but too often I think people do not think about the physics of sonography and ask the question Dr. Worrall has. In addition I have not paid enough attention to the yolk sac to know what the accepted method is. I usually simply image it to document that it is present, not solid, too large or small. I do agree that a large population study of the size would be interesting... and useful. Peace, Terry J. DuBose, M.S., RDMS, FAIUM University of Arkansas for Medical Sciences, USA http://www.io.com/~dubose/ http://www.uams.edu/CHRP/dmshome.htm http://www.obgyn.net/us/panel/dubose_us.htm --- > -----Original Message----- > From: Joseph A Worrall MD RDMS [SMTP:jworrall@alaska.net] > Sent: Wednesday, January 27, 1999 4:17 PM > To: Multiple recipients of list > Subject: Re: Yolk sac > > Should we be measuring the yolk sac inner diameter or outer diameter? I > have > always measured inner. Andrea measures outer. If we are going to collect > data on this (and I think we should), we should all be doing it the same > way. > > Joseph A Worrall MD RDMS Next message: Laura Youngblood: "Re: Fetal Cerebral Ventricles" Previous message: Joseph A Worrall MD RDMS: "Re: Yolk sac"

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