Don't know if anyone has read or heard about this, but from what I have read and seen it seems to be quite accurate!
Heres a link to a forum with whole section to it
http://www.in-gender.com/cs/forums/95.aspx
The basics are that at around the 11/12 week scan at the end of the babies body you can see a little bump.
If you click this link and scroll to the ultra sound images you will see a difference between girl and boy.
http://baby2see.com/gender/external_genitals.html
The girl nub angle is less than 30degrees and for a boy the angle is 30degrees and over.
Not 100% as some scan pics are hard to see a nub on but is more accurate than the silly chinese predictions!
I haven't had my 12 weeks scan so anyone who has had one and want to try the theory out go ahead!
Also the baby needs to be lying on its back like in the photos!
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Ok im updating this so more people can look at there own scans to, hopefully this wil help explain it more.
The scans need to show fetus at the age of 11-12 weeks, its easier to see a nub at this stage (not saying it can't be done later but its harder)
Here is a clear boy nub
Even though that nub is pointing up, a boy nub can even look similar to this
and here showing the angle
Now with Girl nub you typicaly see this
And here another example of other girl nub, with angle to show difference.
Now these pictures are from babies with full body, on the back and are typical nubs, which are much easier to tell from.
But here comes the even more confussing part!
You can have girl nubs that are acutaly boys and boys that are girls
This is usualy in the case where there isn;t full view of the nub and there is a slit at the end of the nub (where even sonographers have confussed for girls.
Here are examples.
Girl looking like boy but is GIRL
Boy looking like girl but is BOY
So as you can see it is quite hard and even sonographers mess it up with the theory, but with a good pic you can near enough guess right between 70 - 80 % of the time
Heres a link to a forum with whole section to it
http://www.in-gender.com/cs/forums/95.aspx
The basics are that at around the 11/12 week scan at the end of the babies body you can see a little bump.
If you click this link and scroll to the ultra sound images you will see a difference between girl and boy.
http://baby2see.com/gender/external_genitals.html
The girl nub angle is less than 30degrees and for a boy the angle is 30degrees and over.
Not 100% as some scan pics are hard to see a nub on but is more accurate than the silly chinese predictions!
I haven't had my 12 weeks scan so anyone who has had one and want to try the theory out go ahead!
Also the baby needs to be lying on its back like in the photos!
..........................................................................................................................................................
Ok im updating this so more people can look at there own scans to, hopefully this wil help explain it more.
The scans need to show fetus at the age of 11-12 weeks, its easier to see a nub at this stage (not saying it can't be done later but its harder)
Here is a clear boy nub
Even though that nub is pointing up, a boy nub can even look similar to this
Now with Girl nub you typicaly see this
And here another example of other girl nub, with angle to show difference.
Now these pictures are from babies with full body, on the back and are typical nubs, which are much easier to tell from.
But here comes the even more confussing part!
You can have girl nubs that are acutaly boys and boys that are girls
This is usualy in the case where there isn;t full view of the nub and there is a slit at the end of the nub (where even sonographers have confussed for girls.
Here are examples.
Girl looking like boy but is GIRL
Boy looking like girl but is BOY
So as you can see it is quite hard and even sonographers mess it up with the theory, but with a good pic you can near enough guess right between 70 - 80 % of the time