الفهرس 
Introduction and Aim of the Work
Applications and Techniques of UltrasoundOnly 14 pages are availabe for public view
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Abstract
Two dimensional ultrasound is commonly used during pregnancy, either to assess the gestational age or to evaluate fetal size, position, heartbeat, congenital malformations, suspected multiple fetuses or placental abnormalities. Three-dimensional US plays an important role in obstetrics, predominantly for assessing fetal anatomy and facilitate the diagnosis of fetal anomalies. The commonest fetal anomalies that have been investigated included facial anomalies, ear malformations, hydrocephaly, neural tube defects, abdominal wall defects, limb abnormalities and choromosomal abnormalities, but it is unlikely to be helpful for detecting intra-fetal abnormalities except for skeletal abnormalities. Compared with conventional 3D US, real-time–processible 3D US (4D) more easily generates realistic 3D fetal images in a shorter time for fetuses surrounded by adequate amniotic fluid, it allows visualization of the unborn baby moving in real-time and enables the user to see fetal motion