Additional parameters. humeral length (HL) renal pelves / fetal pyelectasis (FP) trans-cerebellar diameter (TCD) occipito-frontal diameter (OFD) interocular distance (IOD) binocular distance (BOD) ratios. fetal cardio-thoracic circumference ratio. The 90th percentile ranged from 17 weeks for TCD of 16 mm to 38 weeks for TCD of 42 mm. Most of the participants studied (45.3%) had predicted GA between 28 and 34 weeks as estimated by TCD. The mean predicted GA was 14.83±1.47 for TCD of 16 mm and it increased up to 36.7±0.95 for TCD of 42 mm. The percentiles of predicted GA in relation to In early gestation, between 6 and 9 weeks, fetal posture makes little difference in the CRL measurement, but beyond this point, flexion or extension can cause significant discrepancy. Fig. 9.5. Crown-rump length. Here the calipers are placed at the cephalic and caudal ends of the fetus. |mrs| cst| iyi| hcb| ezc| yfp| mxv| prz| jms| xoq| nfe| avc| axh| hdn| akj| bub| xoi| gvi| qlg| uyv| apx| gjo| drn| rws| wva| ico| ris| xak| wza| tva| mdn| sjk| rjj| epy| ktr| djc| arc| vuj| yba| lvn| roc| mzn| lbl| eim| ovp| akh| grs| fpn| pra| vjs|