background: considering that establishment of reference value of nuchal translucency (nt)-related to the crown rump length (crl) during the first trimester will be helpful for determining an appropriate cutoff level for  screening of increased nt thickness-related abnormalities, we determined the nt thickness and investigated its relation with diff erent chromosomal and nonchromosomal abnormali...

BACKGROUND Nuchal translucency (NT) is the fluid collection behind the fetal neck which can be measured by ultrasound at 11-14 weeks of gestation. Increase in the nuchal translucency thickness is associated with various congenital anomalies. OBJECTIVE To study the relationship between nuchal translucency thickness, crown rump length and gestational age in normal fetus. METHODS Prospective a...

The aim of this study is to assess the association between crown-rump length (CRL) measured before the 10th gestational week and birth weight. Results from 316 transvaginal ultrasonography scans at the 46th, 53rd, 60th, 67th, and 74th days of pregnancy were compared in low birth weight (LBW) versus normal birth weight groups. A positive correlation between CRL and birth weight was observed when...

Methods A total of 1490 pregnant women were assessed for first trimester ultrasonography. They had routinely measured crown-rump length (CRL) and nuchal translucency (NT) for screening for Down syndrome between 11 and 14 weeks of gestation. Cases with a NT≥3 mm were counselled further regarding the risk of chromosomal abnormality and prenatal diagnosis by fetal karyotyping. A complete follow-up...

OBJECTIVE To evaluate the influence of the crown-rump length and body mass index on sonographic evaluation of the fetal heart using abdominal and vaginal routes in the first trimester of pregnancy. METHODS We conducted a cross-sectional study with 57 pregnant women between 12-14 weeks (CRL< 84 mm). We evaluated the following fetal cardiac plans using the abdominal and vaginal routes: four-cha...

We present data on prenatal growth, development, and skeletal ossification for the Angolan free-tailed bat (Mops condylurus), a species distributed throughout sub-Saharan Africa. Specimens were measured for crown–rump length (CRL), greatest length of the skull (GLS), forearm length, mass, and wing area. We cleared and differentially stained specimens for cartilage and bone to quantify pattern o...

vitex agnus castus (chasteberry) is a popular treatment for the management of female reproductive disorders including corpus luteum insufficiency, premenstrual syndrome (pms), menopausal symptoms, and insufficient milk production. according to developing situation of complementary medicine, and frequent use of this herb, it is important to examine its effects during pregnancy. in this research ...

There is little information available on methods to estimate fetal age of hair sheep. The objective of this study was to determine whether crown-rump length (CRL) and/or fetal heart rate (FHR) could be used to predict fetal age in hair sheep using transrectal B-mode and Doppler ultrasonography. St Croix White, Barbados Blackbelly and Dorper X St. Croix White ewes (n = 54) were scanned weekly be...

OBJECTIVES To establish a normal range for fetal adrenal gland length at 11-13 weeks' gestation and to investigate whether the length is altered in fetal trisomy 18. METHODS Fetal adrenal gland length was measured by three-dimensional ultrasound in fetuses at low risk of aneuploidies (n = 400) and another group at high risk, including 380 euploid fetuses and 41 with trisomy 18. The data of th...