"Ultrasonography" Natural Recordings by Native Speakers
Ultrasonography is a type of diagnostic medical imaging technique based on the application of ultrasound. It involves the use of high-frequency sound waves that are beyond the upper audible range of human hearing (typically between 2 and 10 MHz). The sound waves are directed into the body and then bounce back to the device generating them, producing an image of the inside of the body on a screen.
The technique is commonly used to produce images of the internal organs and structures, such as the gallbladder, liver, kidneys, pancreas, and arteries. It is also used to guide biopsies, evaluate the extent of disease, and monitor fetal development during pregnancy.
Some of the benefits of ultrasonography include:
Non-invasive: The procedure does not involve insertion of instruments into the body.
No radiation: Unlike X-rays and CT scans, ultrasonography does not use ionizing radiation.
Low cost: Ultrasonography is generally less expensive than other imaging techniques.
Portable: Ultrasonography can be performed at the bedside or in remote areas where access to other imaging equipment may be limited.
However, ultrasonography is not without limitations. It can be operator-dependent, and suboptimal images may result if the technician is inexperienced or the patient is not well-positioned. Additionally, air-filled organs, such as the lungs, are not well-suited for ultrasonography, as the sound waves are attenuated by air.
Common medical applications of ultrasonography include:
Abdominal ultrasound
Obstetric ultrasound
Musculoskeletal ultrasound
Cardiac ultrasound
Vascular ultrasound
Uluburun is an archaeological site in Turkey, near the city of Fethiye, known for being the oldest known shipwreck discovered at the eastern end of the Mediterranean. It is believed to have been a ship from the Ottoman period, approximately 1250–1300 BCE.