Scanning techniques include: 1  Computed Tomography (CT): This scan combines an x-ray-type device with a computer. 2  Magnetic Resonance Imaging (MRI): The MRI scanner is a tunnel-shaped piece of equipment. 3  Flow-Sensitive MRI (FS MRI): This type of combines functional MRI with images of cerebrospinal fluid (CSF) flow.
The Voting Rights Act was signed into law on August 6, 1965, by Lyndon Johnson. Its primary purpose was to enforce the 15th Amendment of the Constitution, which forbade the states and the federal government to deny suffrage to any citizen on account of race, color, or previous condition of servitude.rovisions of the 1965 Voting Rights Act. 1  The key components of the Act were found in sections 4 thru 9. 2  They were temporary provisions, which were renewed and amended in 1970, 1975, and 1982, the last time for a period of twenty-five years. 3  They come up again for congressional consideration in 2007.
Under strong pressure from Johnson and the civil rights movement, the Senate passed the Voting Rights Act by a 77-19 vote on May 26, 1965. The House passed it 333-85 on July 9. Johnson signed the Voting Rights Act into law on Aug. 6 with King and other civil rights leaders in attendance. The law prohibited the use of literacy tests, provided federal oversight of voter registration in areas where large numbers of nonwhites had not registered to vote and authorized the U.S. attorney general to investigate the use of discriminatory poll taxes in state and local elections.