usg 4d 24 weeks

2D ultrasounds are performed as part of routine prenatal care in the United States. surya toto 4d The appeal of 3D and 4D ultrasounds is understandable, however, they are typically medically unnecessary except in special cases and may present added risks A number of health authorities including the FDA, ACOG, and AIUM advise against "keepsake" ultrasounds