The assessment of normal fetal liver volume by three-dimensional ultrasound

Predicting fetal growth restriction with liver volume by three-dimensional ultrasound: Efficacy evaluation

“…The fetal LV in FGR fetuses is significantly smaller than those without FGR (p Ͻ 0.001). Using the different LV centile values from our previous report as screening thresholds (Chang CH et al 2003), the efficacy of different thresholds of LV by 3-D US in predicting FGR are shown in Table 1. From the result of Table 1, we constructed an ROC curve (Fig.…”

“…were put into an IBM-compatible personal computer for final analysis. We used our previous centile values of fetal LV obtained from a normal population as different screening thresholds (Chang CH et al 2003). The statistical efficacy of each threshold of LV was computed, and a receiver operating characteristic (ROC) curve was constructed to determine the optimal threshold.…”

“…We had reported the assessment of normal fetal LV by 3-D US and had constructed normal reference centiles of fetal LV during normal gestation for further clinical application (Chang CH et al 2003;Chang FM et al 1997). Other investigators also reported fetal LV by 3-D US in nonsmoking women with a normal singleton pregnancy (Laudy et al 1998).…”

The efficacy assessment of thigh volume in predicting intrauterine fetal growth restriction by three-dimensional ultrasound

“…Moreover, precise quantitative measurement of fetal organ dimensions becomes possible when the 3-D volume is retrieved (Chang et al 1997a;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 assessments using 3-D US, including fetal liver, heart, cerebellum, renal, adrenal gland, lung and brain volume from early second trimester to third trimester and obtained more accurate results (Chang et al 1997a(Chang et al , 1997b(Chang et al , 1997cChang et al 2000aChang et al , 2000bChang et al , 2002aChang et al , 2002bChang et al , 2003bChang et al , 2003cChang et al , 2003dLiang et al 1997;Yu et al 2000). From this prospective study of fetal ThVol assessment in detecting IUGR, as well as our previous study of ThVol centiles in normal gestation (Chang et al 2003a), we further proved that ThVol can be measured by 3-D US with adequate precision and reproducibility.…”

Evaluation of the accuracy and reliability of two 3‐dimensional sonography methods in volume measurement of small structures: An in vitro phantom study

“…In the first technique, the 3D reconstructed volume is divided into multiple parallel image planes and the cross section of the anatomic structure is outlined on each of them. 4,9,[12][13][14] In the other technique, the cross sections of the anatomic structures are outlined on the image planes generated by the rotation of the transducer around a fixed axis. 13,15,16 Although it is generally thought that the automated mechanical 3D sonography technique found on the most recent ultrasound units has a higher accuracy and reliability for volume measurements than the freehand 3D technique, there has been no comprehensive, well-controlled comparison of the 2 techniques.…”