For each of the theories, specific types of images are needed.
For early ultrasounds, less than 12 weeks, Ramzi is the only effective tool. We need images that look like what you see below. We need to know if these were completed on your belly or transvaginally because it will tell us if the image needs flipped.
From 12 to 16 weeks, nub theory is most effective – provided the ultrasound tech has captured the nub. Most times the nub does not look as pictured and our experts have to determine gender based on what we are sent.
Below are examples of what the nub may look like.
Skull theory is based on the shape of the skull. An image of the entire head is required.