No abstract available.
Femur* ; Gestational Age* ; Ultrasonography*

In this study, 123 normal pregnancies were performed 649 times of ultrasonographic examinations. Results: there is a correlation between the ratio of head/abdomen circumference and fetal age as following: primipare Y = 1.842633 - 0.029259X + 0.0000047X3, r = 0,777; multipare Y = 1.672611 - 0.022408X + 0.00000278X3, r = 0,795; (Y = Head/ abdomen circumference; X = gestational age). Determination of ratio of head/abdomen circumference will help making early diagnosis abnormal fetal development, so it's necessary to apply this ratio in clinical care
Gestational Age ; ultrasonography ; Pregnancy

he relationship between growth of fetal abdominal circumference and fetal age was examined between 28-41 weeks' gestation in 123 normal singleton pregnancies by ultrasonography. The findings have shown that there is a high correlation between abdominal circumference and fetal age as follows: primipare Y = -183,008 + 16,392X - 0,002X3 (r = 0,928); multipare Y = = -164,330 + 15,712X - 0,002X3 (r = 0,935). Fetal abdominal circumference is different between studies and ethnic groups, especially in near full term fetal. It's important to separate fetal abdominal circumference in first-born fetal and second-born fetal. The ultrasonic measurement of the fetal abdominal circumference is a sensitive and precise variable for estimation of fetal growth and development
Gestational Age ; ultrasonography ; pregnancy ;

Study on the correlation between the femur length and gestational age from 14-30 weeks. Determination of numeric value table of femur length in correlation with centesimal line 5, 10, 50, 90 and 95 to make a basis to built fetus’s femur length chart, applying to monitor normal or malformation status of fetus. The results: fetus’femur length have a closely correlation with gestational age belong to a second-class function: y = 0.0019x2 +0.2377x + 11.1892, r = 0.97, in which, x = gestational age, y = femur length. Based on this chart, the accuracy of the dating random error about 1 week. The earlier, the estimation of gestational age, the more accurate
Gestational Age ; Femur ; Ultrasonography

The relationship between the growth of fetal abdominal circumference and the fetal age was determined by ultrasonography during the 28-41 weeks of gestation in 123 normal pregnancy. A closed correlation was identified and an equation was established
Gestational Age ; Abdomen ; Ultrasonography

Background: In the first 3 months of pregnancy, gestational age to calculate one can measure fetal size bag, the butt length of the embryo pregnancy by ultrasound. After 3 months, estimated gestational age based on peak diameter, femur length, diameter of the cerebellum, the average diameter of two eye holes.\r\n', u'Objectives: Measure and analyze the structure of the fovea, the average diameter of the fovea, as measured two other indicators of the fetus on ultrasound. Learn more connections with the diameter of the fetal development, with gestational age, peak diameter.\r\n', u'Subjects and method: Measuring the interorbital distance of the fetus for pregnant women with regular MP from 28-30 days by ultrasound and with gestational age from 14 weeks of gestation on. Using 2D ultrasound, measuring the indicators of the fetus as the distance between the fovea, peak diameter, transparent front wall, two-hump peak.\r\n', u'Results:The results showed that: there\u2019s a relation between the diameter of the orbital distance with its gestational age. It is demonatrated as followed: Y=0.7873x + 4.0273 with R = 0.8412. The distance between the fovea and peak diameter correlated by the equation Y = 2.1719x + 4.4799 v\u1edbi R = 0.7517. It is more easy and accurate to measure the interorbital distance for pregnancy in second trimester. \r\n', u'Conclusion: Basing on this result, whenever the pregnant woman could not remember exactly the first day of her last MP or her MP is long, we can use the graph of this relation to estimate the weight of the fetal and the day of delivery.\r\n', u'
Gestational Age/ ultrasonography

OBJECTIVE: To investigate whether there is a difference in cerebellar development between appropriate -for-gestational-age (AGA) infants and small-for-gestational-age (SGA) infants. METHODS: A total of 165 AGA infants and 105 SGA infants, with a gestational age of 26-40 weeks, were enrolled in this study. Within 24-48 hours after birth, ultrasound examination was performed to measure the transverse diameter of the cerebellum, the height of the vermis, the area of the vermis, the perimeter of the vermis, and the area and perimeter of the cerebellum on transverse section. A Pearson correlation analysis was used to investigate the correlation between cerebellar measurements and gestational age. RESULTS: In both AGA and SGA infants, all cerebellar measurements were positively correlated with gestational age (r=0.50-0.81, P<0.05). In AGA and SGA infants, there were no significant differences in the measurements between the 25-27 weeks, 28-30 weeks, and 31-33 weeks of gestational age subgroups (P>0.05), while in the 34-36 weeks and 37-40 weeks subgroups, the SGA infants had significantly lower measurements than the AGA infants (P<0.05). CONCLUSIONS The SGA infants with a gestational age of <34 weeks have intrauterine cerebellar development similar to AGA infants, but those with a gestational age of ≥34 weeks have poorer intrauterine cerebellar development than AGA infants.
Cerebellum ; Gestational Age ; Humans ; Infant ; Infant, Small for Gestational Age ; Ultrasonography

No abstract available.
Female ; Femur* ; Gestational Age* ; Humans ; Pregnancy* ; Ultrasonography*

Fetal cystic hygromas are congenital malformations of the lymphatic system manifested as single or multiloculated fluid-filled cavities in the neck region. Cystic hygroma is characterized by cystic appearance of posterior or lateral portion of the neck. A case of cystic hygroma, diagnosed antenatally by ultrasound at the 11(+1)th week of pregnancy and confirmed by autopsy, is presented with a brief review of literatures.
Autopsy ; Gestational Age* ; Lymphangioma, Cystic* ; Lymphatic System ; Neck ; Pregnancy ; Ultrasonography

OBJECTIVES: To determine the change in cervical length after cerclage and whether a transvaginal ultrasonographic measurement about change in cervical lengthening after cerclage is predictive of term delivery METHODS: Twenty-nine single pregnant women were suspected as cervical incompetence by using a serial transvaginal ultrasonography. When a shortening of the cervix was substantial before 25 weeks' gestation, a therapeuric McDonald cerclage was applied. The 29 pregnant women had a transvaginal ultrasonographic measurement of the cervix within 48-72 hours before and after cerclage. At each examination, the first measurement was discarded, and the mean of the subsequent three measurements was calculated. Statistical analysis was performed by use of SAS with the significance set at the 5% level. RESULTS: In the 29 single pregnancies examined, the mean cervical length (distance between internal os and external os) before cerclage was 30.0+/-4.5 mm. A cerclage was applied at the mean gestational age of 16.76+/-3.02 weeks. After the cerclage the mean cervical length increased significantly (r=0.895, p=0.0001) to 34.1+/-4.5 mm. There was a significant relation between the gestational age at delivery and the length of postoperative upper cervix (endocervical canal length above suture) (r=0.378, p=0.043). But there was no significant relation between the gestational age at delivery and the following measurements; preoperative cervical length (r=0.348, p=0.064), postoperative cervical length (r=0.279, p=0.143), cervical lengthening (postoperative cervical length - preoperative cervical length) (r=-0.156, p=0.420), length of postoperative lower cervix (endocervical canal length below suture) (r=-0.003, p=0.999). CONCLUSION: Therapeutic McDonald cerclage results in a longer cervical length as measured by transvaginal ultrasonography. The increase in cervical length after cerclage is not a predictive term delivery. But the Length in upper cervix after cerclage correlated with gestational weeks at delivery.
Cervix Uteri ; Female ; Gestational Age ; Humans ; Pregnancy ; Pregnant Women ; Ultrasonography*