te pūreretā iratuki, he pūreretā ataata, he pūreretā whakaahua, he kaiwhakamahara whakaahua rānei. Ka taea hoki te kii i E tohu ana ki tetahi hua i whakamahia hei tango tohu ataata me te whakaputa i nga whakaahua tohu ataata. He motuhake tenei kaituhi ultrasound , ko te nuinga he pango me te ma, engari he tae ano hoki.