Sonographic markers for early diagnosis of fetal malformations

Figure 8 Prenatal diagnosis by three-dimensional helical computer tomography. A: Achondroplasia (sagittal view): macrocephaly (double arrows), short ribs (dotted arrow) and increased thickness of the femoral metaphysis (single arrow); B: Osteogenesis imperfecta (posterior view): fractures of ribs and femur (arrows); C: Chondrodysplasia punctata (frontal view): epiphyseal calcifications of long bones (arrows). Adapted from Ruano et al[102].