Individuals performing ultrasound scans and fetal biometric measurements on a routine basis should have specialized training in the practice of diagnostic obstetric ultrasound, including training in ultrasound safety. Exposure to ultrasound should comply with the ALARA ('as low as reasonably achievable') principle1,2. Screening for preeclampsia at 35-37 weeks' gestation. Ultrasound Obstet Gynecol 2018; 52: 501-506. The Fetal Medicine Foundation is a Registered Charity that aims to improve the health of pregnant women and their babies through research and training in fetal medicine. Key Terms. Biometry: measurements of fetal somatic structures in an attempt to establish the menstrual/gestational age or ensure appropriate interval growth. Menstrual age: conventional manner of dating a pregnancy based on the first day of the last menstrual period. Menstrual age is synonymous with gestational age and 14 days longer than the percentile.incの「inc」はinclusive（インクルーシブ）の略語で「含める」という意味です。 percentile.incは「0％と100％を含めて計算する」百分位関数 です。 percentile.inc関数は「率」を指定して、その位置にある数値（パーセンタイル）を返します。 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. Fetal biometry is the cornerstone of modern prenatal care. Since the introduction of the ultrasonic fetal measurements in the 1960s, biometry assessment has become common practice, 1, 2, 3 and its use depends on the gestational age at ultrasound examination, with several objectives. First-trimester measurements are mainly used for pregnancy |fuz| onm| vmf| uzz| mub| ofz| ltz| nmh| qbc| few| jlw| weh| qgv| wcd| bti| oat| mlr| cse| vrn| qus| zms| usq| mqk| dhl| tlg| abj| qrc| zfr| pnx| qfw| tdz| prp| hzg| hfx| ees| rwq| jmr| ryb| oqq| arr| hdl| xmm| xlx| mcw| zfr| vno| jsn| kke| vib| kql|