Home » Topic » Ultrasound examination

What is Ultrasound?
How is it done?
What are the uses of ultrsasound?
How do patients prepare for an ultrasound?
How safe is it?
Sun,18 Jan 2004 05:30:00 +0530
Written by : DoctorNDTV Team
Checked by :
  • What is Ultrasound?
    Sun,18 Jan 2004 05:30:00
    Ultrasound is a technique that uses sound waves to study the internal parts of the body. High-frequency sound waves (20,000Hz and above), which are beyond the range of normal hearing are transmitted to the area that needs to be studied and the returning echos are recorded. The technical term for ultrasound testing and recording is sonography. It is used widely in every branch of medicine eg. in obstetrics to study the foetus, in cardiology to detect heart damage and in ophthalmology to detect problems related to the eye. Sometimes ultrasound waves may be used to treat joint pains and in lithotripsy (a procedure in which shock waves break up kidney stones, eliminating the need for surgery). Ultrasound has been used in medicine since the Second World War and is recognised as a non-invasive and an inexpensive imaging technique.
  • How is it done?
    Sun,18 Jan 2004 05:30:00
    In this technique, high frequency sound waves are used to produce an image, representative of the part that needs to be studied. An gel is spread over the skin on the area to be studied. A hand held instrument called a transducer is passed over the surface of interest. It emits high frequency sound waves and collects the reflections from the internal organs. The computer compiles this information into a picture on a video screen and this is simultaneously recorded on a film. After the scanning the gel is wiped off.
  • What are the uses of ultrsasound?
    Sun,18 Jan 2004 05:30:00
    Ultrasound examinations can be used for a variety of purposes ranging from examinations of the chest, abdomen, blood vessels to evaluation of pregnancy. An ultrasound can be used:
    • To obtain detailed images of the size and function of the heart. It can also detect abnormalities of the heart valves, infections of the heart (endocarditis), abnormal fluid collections around the heart (pericardial effusions) or to evaluate and monitor heart functions after a heart attack.
    • To examine the internal structures of the abdomen. Gallstones, kidney problems, tumours, abscess or cysts can be detected in the abdomen or liver.
    • To evaluate the size, gender, movement and position of the growing baby. Transvaginal ultrasounds help to identify patients at risk of opening of the cervix resulting in a miscarriage, monitoring of foetal heartbeat and identifying any other disorders related to pregnancy.
  • How do patients prepare for an ultrasound?
    Sun,18 Jan 2004 05:30:00
    The preparation required for an ultrasound is minimal. If internal organs such as the gallbladder are to be examined, patients are asked to avoid eating and drinking for six to eight hours prior to the examination. This is because food causes gallbladder contraction, minimizing the size which would be visible during an ultrasound. In case of an examination of the lower abdomen or during pregnancy it is recommended to have four to six glasses of water one to two hours prior to examination for the purpose of filling the urinary bladder. The extra fluid in the bladder is easy to identify and moves air-filled bowel loops away from the womb so that the baby and womb are more easily seen during the test.
  • How safe is it?
    Sun,18 Jan 2004 05:30:00
    No harmful effects have so far been noted in the field of diagnostic ultrasound. It is a safe technique and can be repeated as and when required.

................... Advertisement ...................




Using 0 of 1024 Possible characters
Choose Topic

Latest stories

Swine Flu Kills 11 In Nagpur, 4 In Indore: Tips To Prevent Swine Flu

Fri, 22 Sep 2017 17:00:13 IST
As many as 11 people died of swine flu in the Nagpur division in the past two days, taking the death toll 73 for the year, whereas four deaths were reported in Indore in a matter of past 24 hours.

Breathing Dirty Air May Lead To Kidney Failure: Study

Fri, 22 Sep 2017 16:00:58 IST
Air pollution may increase the risk of chronic kidney disease, which can lead to the failure of the organ, a study has warned.

Sexual Touch At An Early Age May Lead To Early Puberty

Fri, 22 Sep 2017 15:00:02 IST
German researchers found that women who were touched on their genitals at a young age experience changes in their brain and that touch triggers puberty.

Moderate Physical Activity For A Healthy Heart, Longer Life

Fri, 22 Sep 2017 14:00:23 IST
A recent study concludes that 1 in every 12 global deaths could be prevented, if all of us adhered to at-least 30 minutes of exercise each day, or 2.5 hours in week. Read on to know moderate exercising could help prevent heart disease and help you live longer.

11 Infants Being Treated For The E-Coli Infection At PGIMER

Fri, 22 Sep 2017 13:00:42 IST
The PGIMER (Post Graduate Institute of Medical Education and Research) battles against the outbreak of E-Coli infection in its Neonatal ICU. 1 infants are getting treatment for this infection at the moment, hospital sources reveal.