What is Ultrasound?

Ultrasound is an oscillating sound pressure wave with a frequency greater than the upper limit of the human hearing range. Ultrasound is thus not separated from 'normal' (audible) sound by differences in physical properties, only by the fact that humans cannot hear it. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.

Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasonic imaging (sonography) is used in both veterinary medicine and human medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning and for mixing, and to accelerate chemical processes. Animals such as bats and porpoises use ultrasound for locating prey and obstacles.

Ultrasonics is the application of ultrasound. Ultrasound can be used for medical imaging, detection, measurement and cleaning. At higher power levels, ultrasonics is useful for changing the chemical properties of substances.

Questions and answers on "Ultrasound"

Hello, I just find out that I might have an endometrial polyp after an ultrasound , I had heavy period for 5weeks it's just stop 2 days ago. I've been advised by the radiologist to do another ultrasound on the 5th day of my cycle. I would like to know that am only 30(just turned) and will that create a problem when conceiving? Thanks Hello, I just find out that I might have an endometrial polyp after an ultrasound, I had heavy period for 5weeks it s just stop 2 days ago. I ve been advised by the radiologist to do another ultrasound on the 5th day of my cycle. I would like to know that am only 30(just turned) and will that create a problem when conceiving? Thanks
The polyp itself wont create any problem in conception.But you should get it removed surgically if there is heavy bleeding.Repeat the ultrasound as advised.If you have heavy periods again,you need medication to stop the bleeding and also surgical advice.
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I had a missed miscarriage on Monday morning in the early a.m. I was 8 weeks along but the sac was only measuring 6 weeks. I passed some tissue and a few clots but have not really had a lot of bleeding . I had a transvaginal ultrasound yesterday and they said my uterus looked empty. I have had to take very little medicine for pain until tonight. I am having sharp pains in my back left side for over an hour now. I took 800 mg of ibuprofin an hour ago and am still having pains. They re bearable but I can t go to sleep like this. Is this normal?
Hello, I would be happy to help you.

First of all, it sounds like you miscarried completely based solely on the ultrasound which showed nothing in the uterus. While I might have expected more bleeding than you describe, this must have been the entire pregnancy.

On the other hand, if someone gave...
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I have gone through Ultrasound test on 21.11.2013.
Test Impression as follows:

Mild hepatomegaly with fatty infiltration..
Bileteral renal parenchymal changes with small cortical scar of left kidney..
Mild prostatomegaly.

Can please explain to me remedies of the impression
Thanks for writing in to us.

I will explain your ultrasound findings in detail.

1. Mild hepatomegaly and fatty infiltration:

There is mild enlargement in the size of liver with increase in fat content. This is seen in alcoholics, diabetics, obese people and few other conditions. Eating a well...
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hi, I m pregnant of 6 weeks.My LMP was on 27.2.12. i hv irregular periods.i had an ultrasound done which shows mean sac, gestation sac, embryo and yolk sac but no fetal pole and fetal cardiac activity is seen.I was also going through a treatment of pcod from last 2 months. Kindly tell me is there anything serious... thanks a lot...
Thanks for your query.

I will try my best to provide you with best possible professional recommendations to your questions.

Gestational sac is detectable by 5 week and yolk sac appears by 5.5 to 6 weeks.
Fetal poles by 5.5 to 6 weeks and fetal heart beat is detectable by ultrasound by 6.5...
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Hi, I am currently 29 weeks pregnant and I have had a significant decrease in fetal movement over the last week. I was concerned and went in last week for a NST and her heart rate was good. They did a quick ultrasound and noticed a couple things that they were concerned about and scheduled me for another, more in depth ultrasound in a couple days. They had mentioned pelvic inflamation, something about one of her kidneys and her growth was off but they didn t want to go into many other details until they had more information from the next ultrasound. Now, she is still very still but I feel her move about 1 to 4 times and hour and I am experiencing mucus like stools. The mucus is definately from my stools and not vaginal discharge . With her continued decreased movement and now the change in stools, I m not sure what to do. Do I have a need to be concerned or are these normal at this stage in the pregnancy?
Mucus in the stools is not related to pregnancy, it is related to irritability of the bowels either due to hormonal changes or infection. Fetal biophysical profile done during an ultrasound and fetal cardiotocography to monitor the fetal heart rate are two of the very good methods available...
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I ve been experiencing abdominal pain (upper and lower) on and off for the last year. I ve had an ultrasound and the doctor has ruled out a hernia . last weekend, I noticed a lump about two inches above my belly button. It is causing discomfort, especially when I sit for a long time. It is causing some mild pain and feels like it is pressing on something and causing indigestion. Any idea what it could be?
Thanks for using HCM.
Ruling out hernia and diagnosing it on ultrasound can be quite challenging and depends on expertise of the concerned doctor. Having said this, it can be possible that the time when you had the ultrasound, the hernia could have been small enough to be detected on the...
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I was thinking that I was pregnant a few weeks ago n I took a hpt which came back negative so that was a relief. I later started having light stomack pains so I went to the doctor. My Obgyn gave me a urine test (negative) then he sent me to get a vaginal ultrasound to see why I was having slight pain. The ultrasound seen a cyst on my ovary . I started to have sore breast/weight gain/stay tired. I wanted to know is there any chance the doctor could have mistaken that cyst for a baby... Or was he even looking for a baby since my urine test was negative. At the time of the ultrasound I would have been 5 or 6 weeks if I am pregnant. HELP
Hello and welcome,

I understand your concern. I cannot comment on what the doctor has seen unless the films of ultrasound are available. However ovarian cysts are known to cause delayed periods. Hence your symptoms are not unusual. A negative pregnancy test and non visualisation of baby both...
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Hi, I have a dilemma because a female claims she ended her period on July 13, 2010 (not sure if that’s true or not). We met for the first time and had sex on July 14, 2010 and many days after. On July 27, 2010 she got a blood test at the doctors and it said she was pregnant and the hcg level was at 27. Im not sure what she told the doctors and if that played a part in the due date or if its based off of ultrasounds and hormone levels but the due date given was April 25, 2011 by her doctor. A due date of April 15, 2011 was given based on a couple unexpected trips to the hospital for spotting. They checked her hormone levels and did measurements of the sac by transvaginal ultrasound at the hospital on Aug. 24, 2010. At the hospital they couldn't see the baby until the following week but tried measuring the sac and said she was approximately 5 weeks and 1 day based on what they could gather and see. She was having sex with multiple guys around the same time period for a while now. When would she have most likely gotten pregnant? Is finding out she’s pregnant within 13 days after having sex and having the hcg level at 27 likely? How soon can you find out you're pregnant by blood tests after having sex? How far along could she have been at the point she found out she was pregnant? How accurate is the due date based on the size of the baby by the ultrasound? How much could false information she’s giving them affect the due date? Also is it possible they couldn’t see the baby if she was more than 5 weeks pregnant (perhaps 7 or 8 weeks)? She’s very dishonest and a habitual liar and I am very stressed and don't want to wait months hoping it's not mine but not knowing. Based on all the facts given and the due date given by her doctor based on the ultrasound pics, what conclusion or opinion do you have on what’s going on and what I should think?
Hallow Dear,

I have gone through your complete history. Let me answer your questions one by one:

1. If she had her menses on July 13 and if you had a solitary intercourse on July 14, it is most unlikely that this intercourse has caused the pregnancy. The egg release takes place 14 days before the...
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Hi doctor, I got my ultrasound done today. I am about 8 weeks pregnant. My last LMP was 7/5/2013. The ultrasound has not detected any cardiac activity. This was the first ultrasound I go for today. There was no free fluid as written by doctor and poor decidual reaction. She told me a missed abortion. I do not have any bleeding or any discomfort. Should I go for a second ultrasound somewhere else?


Usually, fetal cardiac activity is seen around 7-8 weeks through abdominal USG. With TVS scan, it is obtained around 6-7 weeks.

Sometimes, in late pregnancy, it can be obtained around 8-9 weeks. So you can undergo one TVS scan after 1 wk for detailed picture. Otherwise, it may turn into...
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my boyfriend and i had a sex intercourse last jan.30 and feb. 12,then until now i dont have yet my monthly period, but i already take the pregnancy test 3 times and its negative. what do you think is the problem now, why until now i dont have yet my period?
plz get a pelvic ultrasound done(preferably trans vaginal sonography)
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