A ultrasound is exacty how it sounds. It sends out waves of sounds that bounces around your stomach and bumps into matter which then turns around and produces a picture for you. A laser light/flash light is used to light up space and is measured in sight not sound. If you stick a flashlight/laser light down a long dark tunnel it will only go so far as light can only be seen to a certain distance which is measured in how much power is produced. Yet, if you lets say put a light upto something that is not opaque and is hard to see thru as it is you won't be able to get the light to go thru the other side. Sound and Sight are completely different as you can see. (Disclaimer: I am not a scientist, this is just what I have accumulated in knowledge over the year"s".)
The doctor can estimate about how many weeks along the pregnancy is through methods such as ultrasound, but he cannot say with 100% certainty what the exact date was.
Blood work cannot tell you how far along you are as the levels vary so much from pregnancy to pregnancy, go with the ultrasound.
week # 10==================== Using a Doppler ultrasound, the fetal heart can be detected at around the 6th - 7th week of pregnancy these days.
Ruling out ectopic pregnancy is no different with or without Depo Provera. First, the pregnancy test is positive. Second, there is a pelvic mass, or abnormal ultrasound, or abnormal change in hCG levels. Contact your health care provider if you think you may be having a tubal pregnancy, as you cannot diagnose this condition at home.
It is not likely. The earliest an ultrasound can usually detect pregnancy is about 5 1/2 weeks. Although you may be able to see a little sac (with essentially nothing in it) a heart beat may not be able to be detected. This is nothing to worry about though. Implantation occurs at Week 2 of pregnancy so it is not likely that implantation would be able to be seen with an ultrasound.
Ultrasound is safe as it does not use radiation such as traditional xrays do. X-rays cannot be done because can cause damage to the fetus. However, ultrasound uses ultrasonic waves that are not harmful and can produce very clear pictures of a developig fetus.
No, humans cannot hear ultrasound frequencies.
No, ultrasound cannot travel through a vacuum because it requires a medium, such as air or water, to propagate. In a vacuum, there are no particles for the sound wave to travel through, so it cannot propagate.
It is called a transvaginal ultrasound. A new pregnancy typically cannot be visualized until the HCG levels reach between 4,000-5,000. This is when the gestational sac, fetal pole and yolk sac can be visualized. Cardiac activity is typically not seen on an ultrasound until 6 to 7 weeks gestation.
bleeding, sometimes pain and cramping. All bleeding cannot be considered an immediate miscarriage. An ultrasound and fetal hearttones need to confirm.
people use ultrasound technologies, such as sonar and ultrasound imaging to observe things that they cannot see directly.
Becoming an ultrasound tech is a great career choice! This is a course that cannot be completed online or through coorespondence; the best way to begin your path to your chosen career is by contacting local colleges and universities to see which ones offer ultrasound tech training.