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Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb).
An ultrasound showing an embryo measured to have a crown-rump length of 1.67 cm and estimated to have a gestational age of 8 weeks and 1 day. Crown-rump length ( CRL) is the measurement of the length of human embryos and fetuses from the top of the head (crown) to the bottom of the buttocks (rump). It is typically determined from ultrasound ...
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Cardiotocography ( CTG) is a technique used to monitor the fetal heartbeat and uterine contractions during pregnancy and labour. The machine used to perform the monitoring is called a cardiotocograph . Fetal heart sounds were described as early as 350 years ago and approximately 200 years ago mechanical stethoscopes, such as the Pinard horn ...
Others: Same as Python. Type. Stream recorder. License. Unlicense. Website. ytdl-org .github .io /youtube-dl /. youtube-dl is a free and open source software tool for downloading video and audio from YouTube [ 2] and over 1,000 other video hosting websites. [ 3] It is released under the Unlicense software license.
In the "Downloads" section, users can pick channels and subjects to save for offline viewing, and each card indicates how long the videos are, so you have an idea of what you're saving.
Fetal pole. The fetal pole is a thickening on the margin of the yolk sac of a fetus during pregnancy . It is usually identified at six weeks with vaginal ultrasound and at six and a half weeks with abdominal ultrasound. [ 1] However, it is not unheard of for the fetal pole to not be visible until about 9 weeks. The fetal pole may be seen at 2 ...
Quickening indicates the start of fetal movements, usually felt 14–26 weeks after conception, or between the fourth and sixth month. [ 5][ 6] A woman pregnant for the first time (i.e., a primigravida woman) typically feels fetal movements at about 20–21 weeks, whereas a woman who has given birth at least once will typically feel movements ...