The contrast uses a colorant/dye introduced with an IV during your MRI. No contrast is just a MRI without an IV. The dye is used to be able to see more detail.he contrast uses a colorant/dye introduced with an IV during your MRI. No contrast is just a MRI without an IV. The dye is used to be able to see more detail.
George Dewey. George Dewey (December 26, 1837 â January 16, 1917) was Admiral of the Navy, the only person in United States history to have attained the rank. He is best known for his victory at the Battle of Manila Bay during the SpanishâAmerican War.
Dewey invented a system of grouping books of similar subjects together, classified by numbers. His invention,called the Dewey Decimal System, brought much-needed order to libraries. Melvil Dewey, the youngest of five children, was born on December 10, 1851, in a small town in northern New York.he Dewey Decimal Classification System is the most widely used classification system in the world. Libraries in more than 135 countries use the DDC to organize and provide access to their collections. The DDC has been translated into over thirty languages. Libraries of every type apply Dewey numbers.