Amniotic fluid index | Radiology Reference Article - Radiopaedia.org
2024年8月5日 · The amniotic fluid index (AFI) is an estimate of the amniotic fluid volume in a pregnant uterus. It is part of the fetal biophysical profile.
Amniotic fluid index - Radiopaedia.org
The normal range for amniotic fluid volumes varies with gestation 4. Median AFI level is ~14 cm from week 20 to week 35, after which the amniotic fluid volume begins to reduce. Typical values include: AFI <5 cm is considered to be oligohydramnios.
Fetal biophysical profile | Radiology Reference Article
2023年9月14日 · amniotic fluid volume: considered abnormal if the largest pocket is <2 x 2 cm. Each of these parameters is given a score of either 0 or 2 points, where an abnormal score gets 0 while a normal score gets 2. Therefore on ultrasound assessment, a total score is given out of 8.
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Radiopaedia.org, the peer-reviewed collaborative radiology resource
Echogenic amniotic fluid | Radiology Reference Article
2023年8月6日 · Echogenic amniotic fluid is an uncommon finding on obstetric ultrasound. Epidemiology. Echogenic amniotic fluid is reported to occur in ~4% of first and second trimester ultrasound examinations 5. Pathology Etiology. Echogenic amniotic fluid can be seen in normal pregnancies 2,5 but can also be seen in association with various conditions 1-5.
Amniotic fluid volume | Radiology Reference Article
2024年8月5日 · Ultrasound. Ultrasound is the modality of choice of assessing amniotic fluid volumes. The AFV can be assessed by ultrasound by using three main indirect parameters: single deepest (maximum vertical) pocket method. amniotic fluid index. two diameter pocket method. See also. polyhydramnios. oligohydramnios. amniotic fluid discordance
Oligohydramnios | Radiology Reference Article - Radiopaedia.org
2024年8月1日 · Ultrasound. Several sonographic criteria can be used which include: four quadrants amniotic fluid index (AFI): <5 cm. two diameter pocket method: <1 x 1 cm or <15 cm 2. deepest vertical pocket (DVP) depth: <2 cm. Treatment and prognosis. The development of oligohydramnios early in pregnancy is generally a poor prognostic marker.
Dichorionic diamniotic twin pregnancy - Radiopaedia.org
2022年8月3日 · Ultrasound. Sonographic assessment of chorionicity is most accurate in the first trimester. First trimester. Features supporting a DCDA pregnancy: presence of two gestational sacs with a thick echogenic chorion surrounding each embryo; a thick inter-twin membrane (often taken as >2 mm) twin peak sign (lambda (λ) sign)
Anhydramnios | Radiology Reference Article - Radiopaedia.org
2024年8月22日 · Ultrasound. Typically shows a complete absence of amniotic fluid around the fetus. Color Doppler interrogation may be of value in selected cases when loops of cord around the fetus mimic amniotic fluid 2. However demonstration of vascularity within the same can help differentiate the loops from amniotic fluid.
Umbilical arterial Doppler assessment - Radiopaedia.org
2024年2月12日 · Umbilical arterial (UA) Doppler assessment is used to survey fetal well-being in the third trimester of pregnancy. Abnormal umbilical artery Doppler is a marker of placental insufficiency and consequent intrauterine growth restriction (IUGR) or suspected pre-eclampsia.
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