A thyroid scan can show the size, shape, and location of the thyroid gland . It can also find areas of the thyroid gland that are overactive or underactive. The camera takes pictures of the thyroid gland from three different angles. The radioactive tracer used in this test is either iodine or technetium.
The current U.S. Senate has 54 Republicans and 45 Democrats (including one independent). The 2016 Senate election takes place on November 8, 2016. There are 34 seats up in 2016, of which 24 are held by Republicans. Democrats will need to gain 4 or 5 seats to take control.
There are 57 Democrats in the Senate and 40 Republicans. There are also two independents who caucus with the Democrats. In addition there is one empty seat that was vacated on the death of Sen. Edward Kennedy of Massachusetts. If this seat were filled, there would be a total of 100 Senators--two from each of the 50 states. In the House of Representatives (Congress's other house), there are 256 Democrats and 178 Republicans, making for a total of 434 Representatives. There is also one vacant seat.