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19 Ιουλ 2021 · ISUOG has published guidance on the use of Doppler ultrasound at the 11 to 13 + 6-week fetal ultrasound examination 1. When performing Doppler imaging, the displayed thermal index should be ≤ 1.0 and the exposure time should be kept as short as possible, usually no longer than 5–10 min.
31 Ιαν 2013 · What is the appropriate technique for obtaining uterine artery Doppler waveforms? Using Doppler ultrasound, the main branch of the uterine artery is easily located at the cervicocorporeal junction, with the help of real-time color imaging.
Learn how uterine artery Doppler ultrasound can help screen for preeclampsia and fetal growth restriction in pregnancy. Find out what the test involves, when it is done, and what the results mean.
It is possible to predict significant vascular events during pregnancy through uterine artery Doppler (UAD). From the implantation stage to the end of pregnancy, detecting changes in uterine and placental blood vessels can provide a favorable diagnostic instrument for pregnancy complications.
Figure 1 Transabdominal Doppler ultrasound examination of uterine artery in the first trimester. The uterine artery loop is located in a paracervical section, and at least three identical waveforms are recorded, using an insonation angle as close to 0 as possible. Transvaginal assessment of uterine artery resistance follows the same principles.
Uterine artery Doppler screening of high-risk women (eg, history of chronic hypertension or preeclampsia, prior fetal growth restriction, or stillbirth) with singleton gestations appears to identify those at substantially increased risk for adverse pregnancy outcomes.
8 Μαΐ 2013 · Effective screening for pre-eclampsia can be achieved by measurement of the uterine artery pulsatility index (PI) at 11–13 weeks' gestation, used in combination with maternal history, blood pressure, serum pregnancy-associated plasma protein-A and placental growth factor 1.
