Positron emission tomography (PET) is a test that uses a special type of camera and a tracer (radioactive chemical) to look at organs in the body. The tracer usually is a special form of a substance (such as glucose) that collects in cells that are using a lot of energy, such as cancer cells.
The Eleventh Amendment was ratified in 1798 in order to overrule the Supreme Courtâs decision that a South Carolina citizen could sue the state of Georgia for money damages.he Eleventh Amendment was ratified in 1798 in order to overrule the Supreme Courtâs decision that a South Carolina citizen could sue the state of Georgia for money damages.
Of the 33 amendments proposed by Congress, 27 were ratified. Of the amendments ratified, only oneâthe Twenty-First Amendment, which repealed a Prohibition on alcoholâwas ratified by the state convention method.The rest have been ratified by three-fourths of the state legislatures.The process for amending the Constitution is deliberately difficult. Even when an amendment is proposed by Congress, it has taken, on average, two-and-a-half years for it to be ratified.f the 33 amendments proposed by Congress, 27 were ratified. Of the amendments ratified, only oneâthe Twenty-First Amendment, which repealed a Prohibition on alcoholâwas ratified by the state convention method.