1. Baba K, Satoh K, Sakamoto S, Okai T, Ishii S.Non-invasive three-dimensional imaging system for the fetus in utero.In: Maeda K, eds.The fetus as a patient '87.Amsterdam, the Netherlands: Excerpta Medica, 1987; 111-116.
2. Baba K, Furukawa T, Ishii S, Okai T, Satoh K, Sakamoto S.Ultrasonic three-dimensional imaging system for a fetus in utero.In: Maeda K, Hogaki M, Nakano H, eds.Computers and perinatal medicine.Amsterdam, the Netherlands: Excerpta Medica, 1990; 83-92.
3. Three-dimensional ultrasound of fetal surface features
4. “Voluvision”: Three-dimensional ultrasonography of fetal malformations
5. Pretorius DH, Nelson TR.Prenatal visualization of cranial sutures and fontanelles with three-dimensional ultrasonography.J Ultrasound Med1994; 13: 871-876.