An **ultrasound examination**, also known as **sonography**, is a medical imaging technique that uses high-frequency sound waves to create images of structures inside the body. During the ultrasound examination, a probe, called a transducer, is placed on the patient’s skin. This device emits high-frequency sound waves into the body. These waves penetrate the tissues and are reflected back by the different organs and structures inside the body. The reflected waves are captured by the ultrasound machine and displayed as images on a screen.

Ultrasound is a non-invasive, painless, and low-risk diagnostic method used in many areas of medicine. It is commonly used to examine various organs such as the heart, liver, kidneys, spleen, and thyroid gland. It is also frequently used during pregnancy to monitor the growth and development of the fetus.

Ultrasound offers several advantages over other imaging methods like X-ray or CT scans. First, it is very safe because it does not involve harmful radiation. Second, it is highly precise and can detect fine details in tissues and organs. Additionally, ultrasound can be performed in real-time, making it possible to visualize organ movements and changes immediately.

An ultrasound examination is typically performed by a specialized doctor or trained healthcare professional and usually takes between 15 to 30 minutes. In some cases, the patient may be asked to change positions or take deep breaths to get a clearer view of the organs.

In summary, ultrasound examination is an essential diagnostic tool in medicine that helps detect various conditions early and allows for targeted treatment. It is safe, painless, and highly accurate, making it a valuable addition to other diagnostic methods.