Pregnancy, how many times you can do up to B-?

Should be said that no specific number of restrictions, in general, and from the need to check the economic point of view, B-ultrasound in normal pregnancy to two is appropriate. First check in about 20 weeks of pregnancy, the focus is excluded deformity. Because relatively large amniotic fluid at this time, the fetus in utero have more space, better to do B-contrast, can be checked from the ground to the feet of the fetus, the fetus can be clearly seen in various organs, especially the limbs, easy to show . The second thing is in late pregnancy (after 28 weeks), fetal growth and development in order to understand the situation, whether the abnormal placental position and amniotic fluid, etc., can also help doctors determine the fetal position.
but if the pregnancy is not normal, then you need to determine the condition number of B-ultrasound, for example, excessive amniotic fluid, before and after treatment may be repeated often in the amniotic fluid volume measurements. Again, after more than 40 weeks of pregnancy, a week may need 1 or 2 times B-mode ultrasound to measure amniotic fluid volume and assess the status of the fetus in utero. content from pregnancy question and answersRenting&RealEstate

and B-has no effect on the fetus, the key is that the dose of ultrasound, Ultrasound in the security context of the high dose limit is called the threshold. That is, when obstetric B-dose less than the threshold value, it is harmless, whereas greater than the threshold value, may produce harmful effects or injury. Current clinical diagnostic ultrasound and therapeutic ultrasound with ultrasound of the points on the dose, therapeutic ultrasound on the human body there is a certain amount of damage or impact, and diagnosis B-, in a regular hospital, after a rigorous professional training of doctors or technicians operating under, B-instrument power and exposure time are controlled in a safe range, and will not cause harm to human body or fetus. West I wish you health and happiness!






Hello, is not up to doing several times to the patient's specific circumstances, generally throughout the pregnancy can be done three to five B-ranging. One of the most important thing is 22-26 weeks pregnant to do four-dimensional fetal ultrasound to see whether the row of abnormal screening major organ malformations and deformities in general. And burn the disc can take pictures taken. Fetal left precious prehistoric data.

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Are the same, usually three to five times on it.



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