During a HIDA Scan a scanner monitors the radioisotope that was initially injected. When (CCK) cholecystokinin, a hormone that's normally released by the body after a meal, is injected, the contraction of the gallbladder is identified on the scan. Reduced contraction (which often produces pain) may mean anything from actual gallbladder disease/dysfunction, to inflammation or scarring.
United States History. Andrew J. Volstead, Republican representative from Minnesota, was the driving force behind the National Prohibition Act (popularly the Volstead Act), written to provide for the enforcement of the recently ratified 18th Amendment. It was passed by Congress in October, 1919, but was vetoed by President Wilson on October 27.
Prohibition summary The noble experiment of Prohibition was introduced by the 18th Amendment, which became effective in January 1920. Here are four reasons why Prohibition was introduced: 1  National mood - when America entered the war in 1917 the national mood also turned against drinking alcohol. 2  Practical - a ban on alcohol would boost supplies of important grains such as barley. 3  Religious - the consumption of alcohol went against God's will.