Ultrasound refers to sound waves with frequencies above the audible range for humans. Medical ultrasound (also known as diagnostic sonography or ultrasonography) is a diagnostic imaging technique that uses high-frequency sound waves to produce images of structures inside the body.
Medical ultrasound exams are performed by specially trained technicians and physicians called sonographers and ultrasound technologists. The images produced by ultrasound are often called sonograms.
During an ultrasound exam, a transducer (probe) is placed in contact with the patient’s skin. The transducer sends out ultrasonic sound waves at a frequency too high to be heard. As the sound waves bounce off organs and other structures, they return to the transducer. The transducer picks up these returning echoes and sends them to a computer, which converts them into images.
Ultrasound is a painless medical test that helps physicians diagnose and treat medical conditions. There are no known harmful effects from exposure to low-intensity ultrasound. High-intensity ultrasound is used in some medical treatments, such as cancer treatment, and can have harmful effects on the body.
Types of Ultrasound:
There are two main types of ultrasound: diagnostic ultrasound and therapeutic ultrasound.
1. Diagnostic Ultrasound is used to visualize internal organs, blood flow, and tissue structure. It is used to diagnose a wide variety of conditions, including heart disease, liver disease, kidney stones, and many more.
2. Therapeutic Ultrasound is used to treat a variety of conditions, including pain relief, wound healing, and cancer treatment.
Ultrasound can also be used for non-medical purposes, such as industrial testing and sonar.
How does Ultrasound work?
- Ultrasound waves are sound waves with frequencies higher than 20 kilohertz (20,000 Hz). These high-frequency sound waves are not audible to human ears.
- When ultrasound waves come into contact with tissues or organs, they cause the tissues to vibrate. The frequency of the vibration is proportional to the frequency of the ultrasound waves.
- The vibrations cause changes in the pressure and density of the tissue, which can be detected by sensors. This information is then converted into images by a computer.
- Ultrasound waves can be used to image internal organs, blood flow, and tissue structure. They can also be used to treat a variety of conditions, including pain relief, wound healing, and cancer treatment.
What are the benefits of Ultrasound?
- Ultrasound is a painless, non-invasive medical procedure that has a wide range of applications. It can be used to diagnose a variety of conditions, including heart disease, liver disease, kidney stones, and many more.
- Ultrasound can also be used to treat a variety of conditions, including pain relief, wound healing, and cancer treatment.
- Ultrasound is a safe medical procedure with no known side effects. It does not use ionizing radiation, which means it is not harmful to the body.
What are the risks of Ultrasound?
There are no known risks associated with diagnostic ultrasound.
- Therapeutic ultrasound may cause heating of the tissue, which can lead to burns. It is important to follow the instructions of the physician or sonographer to avoid any potential risks.
- Ultrasound waves can be reflected or scattered by different tissues in the body. This may cause artifacts (incorrect images) on the ultrasound image.
- Artifacts can sometimes make it difficult to interpret the ultrasound image. However, artifacts are usually not a cause for concern. Your physician or sonographer will be able to explain any artifacts that appear on your ultrasound images.
Please consult with your physician or sonographer if you have any questions or concerns about ultrasound.
Ultrasound is a painless, non-invasive medical procedure with a wide range of applications. It is safe and has no known side effects. Ultrasound can be used to diagnose a variety of conditions, and can also be used to treat conditions such as pain relief, wound healing, and cancer treatment.