Ultrasound scan, also called Sonography (ultrasonography) is the diagnostic imaging method, which uses high frequency sound waves to take images of organs inside your body. Medical sonography is used : Cardiology, Gastroenterology, Gynecology, Neurology, Ophthalmology, Urology, Musculoskeletal, Cardiovascular system.
The images created during the ultrasound examination, often provide information that is very valuable in the diagnosis and treatment of various diseases.
Most ultrasound examinations done by sonar – a device which is not introduced into your body, although some surveys ultrasound still require placement of the device inside your body.
Ultrasound scan uses the same technology as Sonar, used for the detection of underwater objects. Transducer generates and receives high frequency sound waves that can not be heard by human ear.
Despite their value, ultrasound can not provide images of all areas of your body. Sonography is effective for imaging soft tissues of the body. Ultrasound does not penetrate through air or bone, so that ultrasound is not effective for imaging body parts that contain a gas or bone. In order to conduct a survey of these areas, your doctor may instead ultrasound order other imaging tests, such as CT or MRI scans, or X-rays.
Therapeutic applications use ultrasound to bring heat or agitation into the body. Therefore much higher energies are used than in diagnostic ultrasound scan. In many cases the range of waves frequencies used are also very different.
You may have to undergo an ultrasound examination by one of a number of reasons. Ultrasound can be such as:
- Transvaginal ultrasound
- Three-dimensional ultrasound
- Ultrasound pregnant
- Abdominal ultrasound
- Ultrasonography thymus
- Ultrasonography of internal organs
- Ultrasound eye
- Ultrasound brain
- Uzi gallbladder
- Ultrasonography of mammary glands
- Ultrasonography of soft tissue
- Ultrasonography adrenal
- Ultrasound Newborn (baby)
- Liver ultrasound
- Ultrasound fetal
- Ultrasonography of the pancreas
- Ultrasound prenatal sex
- Ultrasound kidney
- Ultrasound prostate
- Ultrasound prostate
- Ultrasound of the heart
- Ultrasonography of the salivary glands
- Vascular ultrasound
- Ultrasonography joints
- Pelvic ultrasound
- Ultrasonography of the hip joints
- Neck ultrasound
- Ultrasonography of the cervix
- Thyroid gland
Diagnostic ultrasound is a safe procedure. During the ultrasound examination there is no direct risks associated with diagnostic ultrasound. Exposure to radiation does not occur.
Rules for the preparation of ultrasound depends on what will be screened:
* Some ultrasound does not require training.
* Others require that you refused to take food and liquids for up to six hours before the study
* Still others require that you not urinate before the exam to ensure that your bladder will be full, allowing better visualization of the uterus, ovaries or prostate.
If you have planned your ultrasound, ask your doctor about how you should prepare for your ultrasound examination.
Ultrasound is usually done when you’re lying. A small amount of water-based gel is applied to your skin at the place where it will be screened. The gel helps to avoid formation of air pockets between the ultrasound and your body. The survey, prepared by specialist ultrasound examination (sonographer), carries a small portable device (transducer) over the area of your body that is examined, going from one place to another as needed.
When ultrasound is completed, a specialist in ultrasound with a radiologist view ultrasound images on film or on a computer monitor. Then radiologist analyzes the images obtained with the aid of ultrasound and sends a report with the results to your doctor.