Department of Radiology. Interventional. Interventional Radiology is a specialty whereby minimally invasive procedures are performed with the use of image guidance (CT scans, ultrasounds, and x-rays).
T RUNCATION & W ILDCARD O PERATORS revised 1/08gs Truncation Use the truncation symbols to create searches where you want to retrieve all variants of a word stem. The most commonly used truncation symbol is the asterisk (*).For example, a search for educat* will retrieve: educate, educating, education, educational, educator, educators, etc. Wildcards A wildcard symbol is used within a word to provide for all possible spellings or variations inside a word or word stem. RUNCATION & W ILDCARD O PERATORS revised 1/08gs Truncation Use the truncation symbols to create searches where you want to retrieve all variants of a word stem. The most commonly used truncation symbol is the asterisk (*).
Echolocation is the use of sound waves and echoes to determine where objects are in space. Bats use echolocation to navigate and find food in the dark. To echolocate, bats send out sound waves from their mouth or nose. When the sound waves hit an object they produce echoes. The echo bounces off the object and returns to the bats ears. Bats listen to the echoes to figure out where the object is, how big it is, and its shape. Using echolocation, bats can detect objects as thin as a human hair in complete darkness. Echolocation allows bats to find insects the size of mosquitoes, which many bats like to eat.