Seven-month fetal B-ultrasound gender identification chart sharing. For expectant parents who want to know the gender of their fetus, seven-month fetal B-ultrasound gender identification is one of the most commonly used methods. This technique is very safe and accurate, making it popular. The following is a sharing of a seven-month fetal B-ultrasound gender identification chart, which introduces several aspects related to fetal B-ultrasound gender identification. How to make seven