Ultrasound is often the first test used to look at the liver. Ultrasound (ultrasonography) is the use of sound waves to create an image on a video screen. A small instrument called a transducer gives off sound waves and picks up the echoes as they bounce off the organs.ltrasound is often the first test used to look at the liver. Ultrasound (ultrasonography) is the use of sound waves to create an image on a video screen. A small instrument called a transducer gives off sound waves and picks up the echoes as they bounce off the organs.
RMS Titanic was a British passenger liner that sank in the North Atlantic Ocean in the early morning of 15 April 1912 after colliding with an iceberg during her maiden voyage from Southampton, UK, to New York City, US.
Timeline of events. At 11.40pm on Sunday 14 April 1912, almost 100 years ago, the Titanic was just four days into its first voyage when it struck an iceberg. But how long did it take for the ocean liner to sink?