THE PREDICTION OF DELIVERY DATE BY ULTRASONIC MEASUREMENT OF FETAL CROWN-RUMP LENGTH

1977 ◽  
Vol 84 (1) ◽  
pp. 1-5 ◽  
Author(s):  
J. E. Drumm
Keyword(s):  
Ultrasonic Measurement ◽  
Crown Rump Length ◽  
Delivery Date

Detection of the Small-for-Gestational Age Twin Fetus by a Two-Stage Ultrasound Examination Schedule

1982 ◽  
Vol 31 (3-4) ◽  
pp. 235-240 ◽  
Author(s):  
J.P. Neilson
Keyword(s):  
Early Pregnancy ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Ultrasound Examination ◽  
Ultrasonic Measurement ◽  
Two Stage ◽  
Crown Rump Length ◽  
Biparietal Diameter ◽  
Ultrasonic Assessment ◽  
Twin Pregnancies

Serial ultrasonic measurement of the biparietal diameter is an unsatisfactory means of detecting the small-for-gestational age (SGA) fetus in twin pregnancies. A new two-stage ultrasound examination schedule, highly effective in detecting the SGA singleton fetus, has been evaluated prospectively in 31 twin pregnancies. The schedule comprises ultrasonic assessment of gestational age in early pregnancy, followed by measurement of the product of the crown–rump length and trunk area of both fetuses at 34–36 weeks. All Nineteen SGA twin fetuses were detected using this schedule; the technique offers several other advantages over serial biparietal cephalometry.

Prediction of Gestational Age in Osmanabadi Goats by Ultrasonic Measurement of Crown-Rump Length

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Prasanna Patil ◽  
S. K. Sahatpure ◽  
A. D. Patil ◽  
Umesh Kumar ◽  
Basanti Jena ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Gestational Age ◽  
Linear Regression Analysis ◽  
Ultrasonic Measurement ◽  
Reliable Index ◽  
Crown Rump Length ◽  
Transabdominal Ultrasonography ◽  
Biometric Parameter ◽  
Natural Mating

The objective of this study was to predict gestational age of Osmanabadi goats by realtime ultrasonography using measurements of Crown Rump Length (CRL). CRL was measured in 15 Osmanabadi goats, by transabdominal ultrasonography carried out on days 35, 42, 49, 56, 63 and 70 of gestation, those became pregnant after oestrus detection and natural mating following oestrus synchronization in 30 does using double PGF2α injections 11 days apart. Gestational age was calculated by using gestational equations derived from the linear regression analysis. Results clearly demonstrated that biometric parameter CRL was significantly (P ios less than 0.01) correlated with gestational age (r= 0.988) and was a reliable index to predict gestational age in Osmanabadi goats.

Ultrasonic Measurement of Sheet Steel Texture and Formability: Comparison with Neutron Diffraction and Mechanical Measurements

1990 ◽  
Vol 2 (1) ◽  
pp. 239-257
Author(s):  
A. V. Clark ◽  
R. B. Thompson ◽  
Y. Li ◽  
R. C. Reno ◽  
G. V. Blessing ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Sheet Steel ◽  
Ultrasonic Measurement ◽  
Mechanical Measurements

EFFECT OF FEEDING ETHINYLOESTRADIOL FOR VARIOUS PERIODS BEFORE MATING ON REPRODUCTION IN THE HAMSTER

1972 ◽  
Vol 70 (3) ◽  
pp. 582-590
Author(s):  
B. K. Davis ◽  
I. Noske ◽  
M. C. Chang
Keyword(s):  
Single Dose ◽  
Pregnancy Rate ◽  
Fertility Control ◽  
Normal Pregnancy ◽  
Oestrous Cycle ◽  
The Other ◽  
Feeding Schedule ◽  
Crown Rump Length ◽  
Essentially Normal ◽  
Effect Of Feeding

ABSTRACT Ethinyloestradiol (EO) fed for various periods before mating to female hamsters affected the timing of mating and pregnancy rate. Slight effects on ovulation, foetal-crown rump length and resorption may have occurred, but effects on implantation were not apparent among pregnant hamsters. The response observed depended upon the feeding schedule adopted: hamsters fed 2.5 mg EO in a single dose, on day 3 before mating, mated normally but had a significantly lower pregnancy rate; on the other hand, animals fed 2.5 mg EO (0.21 mg/day) over three oestrous cycles, days 14–3 before mating, showed variations in the time of mating but had an essentially normal pregnancy rate; and, a group of hamsters who received the same total amount of EO (0.63 mg/day) over one oestrous cycle, days 6–3 premating, showed untowards effects by the steroid on both the timing of mating and pregnancy rate. The implications of these results are considered in relation to fertility control.

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