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Some commentary and images courtesy of Jill Beithon, RT, RDMS, RDCS, RVT. Introduction. This topic covers fetal age and growth assessment for the second and third trimester (14 -40 weeks gestation). Fetal images demonstrate the methodology for …

Page Links: Umbilical Cord Development, Umbilical Cord Blood Flow, Imaging Considerations, Images, Summary, Video, References . The critical embryological times are at 24 to 25 days, the beginning of the 6th week, and during the 10th week.

Some commentary and images courtesy of Jill Beithon RT, RDMS, RDCS, RVT. Normal At 6 to 8 weeks gestation, normal ranges are established for crown-rump length (CRL), heart rate (HR), gestational sac diameter (GSD), and yolk sac diameter (YSD).

Single Umbilical Artery: Images Above. 2-D gray scale view. Transverse of an umbilical cord demonstrating SUA (single umbilical artery); 2-vessel cord with UA (umbilical artery) and UV (umbilical vein).

OB Images > Take A Tour > Fetal Situs. PDF Button. Determining Normal Fetal Situs (Situs Solitus) One of the first steps in obtaining cardiac views is to determine how the fetus is oriented within the uterus and to determine the right and left side of the abdominal contents versus the right and left side of the heart and thoracic contents.

In addition, the transverse view of abdomen, the 3 vessel view (3VV), and the 3 vessel tracheal (3VT) view are recommended by the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG). The aim of the screening exam is to define normality and whether there is deviation from normality, requiring referral for fetal echocardiogram.

Upper images of Color Doppler demonstrate umbilical cord insertion onto the omphalocele. Lower images demonstrate 2 umbilical arteries as they exit from the fetal abdomen. Above.

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OB Images > Fetal Heart > Normal Fetal Heart Ultrasound. THIS CONTENT IS FOR ACTIVE MEMBERS ONLY. If you're an existing member, please login. If you are a guest, head over to our registration form to become a member now! Login. Fetal Heart. Normal Fetal Situs; Key Views; Abnormal Fetal Heart Videos;