Re: Vernix Caseosa - at what gestational age is it first seen by
From: Allen Worrall (jworrall@alaska.net)
Fri Feb 15 12:28:41 2002
Wolfgang, do you have any references to the Tyndall effect as it relates to
transvaginal prenatal sonography?
Allen
Joseph A Worrall MD RDMS
The Fairbanks Clinic
1919 Lathrop Street, Suite 100
Fairbanks, AK 99701
jworrall@alaska.net
1 907 451 4225
>----- Original Message -----
From: "Wolfgang Moroder, MD" <womorode@tin.it>
To: "Multiple recipients of list ULTRASOUND"
<ultrasound@mail.medispecialty.com>
Sent: Thursday, February 14, 2002 8:10 AM
Subject: Re: Vernix Caseosa - at what gestational age is it first seen by
> I would like to remind that there is the Tyndall effect which is
> particularly present with transvaginal probes using higher frequencies
> and which permits to visualize microscopical particles suspended in a
> fluid and normally not visible to the naked eye. There is an excellent
> website describing this physical phenomenon here:
> http://www.svpvril.com/Tyndall.html#TOP
> regards
> Wolfgang Moroder
>
> At Wed, 13 Feb 2002, DuBose, Terry wrote:
> >
> >It might depend upon how early in gestation. If the amnion and chorion
is
> >not fused, then the material between, called the "magma reticular" by
Creasy
> >& Resnik, is slightly echogenic... very slightly, but more than the
amniotic
> >fluid. But if it is after the 1st trimester I doubt it would be the
magma
> >reticular.
> >
> >Peace, Terry J. DuBose, M.S., RDMS
> >Assistant Professor & Director, Diagnostic Medical Sonography Program
> >CHRP, University of Arkansas for Medical Sciences
> >Little Rock, Arkansas, USA
> >501-686-6510
> >http://www.io.com/~dubose/
> >http://www.uams.edu/CHRP/dmshome.htm
> >http://www.obgyn.net/us/panel/panel.htm
> >
> >-----Original Message-----
> >From: Allen Worrall [mailto:jworrall@alaska.net]
> >Sent: Wednesday, February 13, 2002 2:59 PM
> >To: Multiple recipients of list ULTRASOUND
> >Subject: Re: Vernix Caseosa - at what gestational age is it first seen
> >by
> >
> >Art, is the "crud" inside the amniotic? The "crud" that I saw yesterday
was
> >inside. Echopenic areas between the internal os and the amnion I would
> >assume to be old blood or clot.
> >
> >Allen
>
> --
> Wolfgang Moroder, MD
> Prenatal Unit
> Bolzano General Hospital Italy
