I was just browsing the medical literature when I came upon this abstract. It summarizes an article concerning a new algorithm developed by two Chinese researchers that would prevent ultrasound technicians from identifying the sex of the baby. The process would identify the pixels in the image that would be genitalia. It is not written, but it is understood that this system is intended to censor this information.
You just know the next step is the creation of ultrasound machines that includes these algorithms. Who knows, maybe they will be shipped around the world.