“…Moreover, precise quantitative measurement of fetal organ dimensions becomes possible when the 3-D volume is retrieved (Lee et al 1994;Merz et al 1995). Since our first report of primary application of 3-D US in obstetrics (Kuo et al 1992), we have published a series of fetal organ volume assessment using 3-D US, including fetal liver, heart, cerebellum, adrenal gland, lung, brain, thigh and humerus from early second trimester to third trimester, and we obtained more precise results than using 2-D US (Chang et al 2005a(Chang et al , 2005b(Chang et al , 2006a(Chang et al , 2006b(Chang et al , 2007Chang et al 1997).…”