Ramzi Theory explained?

I read this online...any truth to it? I have no clue how to look at an ultrasound to determine where placenta is;

“Basically if the placenta is on the left = girl and right = boy, but this depends on whether you had an internal or abdominal scan. If you had an abdominal scan then the photo is mirror image so right = left and vice versa, whereas internal scan right =right and left=left! Hope that makes sense.”