Gender prediction based on shape of forehead?

I have heard that a female forehead appears more rounded on an ultrasound scan and male forehead appears flatter?

Does anyone have any experience or scan pictures that back up this theory?

 Thanks,

Senorita

I have never heard of that.  I'm curious to see who has.

 they all look the same, especially in the first 24 weeks

I never heard that either i would think it would be pretty hard to tell though.

there has been a thread on this way further back and on this one it says that it the forehead ridge I think for a boy they are more pronounced and for a girl they arent as much more flatter I think but dont know if it is true