RT Book, Section A1 Haratz-Rubinstein, Natan A1 Monteagudo, Ana A1 Timor-Tritsch, Ilan E. A2 Timor-Tritsch, Ilan E. A2 Monteagudo, Ana A2 Pilu, Gianluigi A2 Malinger, Gustavo SR Print(0) ID 1138378812 T1 BIOMETRY OF THE FETAL BRAIN T2 Ultrasonography of the Prenatal Brain, 3e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071613064 LK obgyn.mhmedical.com/content.aspx?aid=1138378812 RD 2024/04/19 AB Prenatal diagnosis should be instituted accurately and early enough to achieve an excellent level of care of the obstetric patient. Ultrasonography, with its increasingly better resolution and image quality, is making it easier for health care providers to make appropriate management decisions. Assessing whether a structure is normal or abnormal may not always be feasible, but if doubt exists regarding its normalcy, it must be carefully and diligently pursued. In addition, several measurements, such as the biparietal diameter (BPD) and the head circumference (HC), can be used to determine the gestational age of a fetus, especially during the first half of pregnancy. Correct estimation of gestational age is of paramount importance because adequate management of both low- and high-risk obstetric populations relies heavily on knowing the precise gestational age.