One of the most-used features of the Internet Movie Database is the message boards that coincide with every title (excepting, as of 2013, TV episodes) and name entry, along with over 140 main boards. This section is one of the more recent features of IMDb, having its beginnings in 2001.
MCM means 1000's (M) of (C)ircular (M)ils. kcmil means 1000's (K) of (C)ircular (M)ils. Mil means 1/1000 inch. Circular Mil means the area of a circle 1/1000 inch in diameter. AWG = -4.3125 LN (mm2) + 17.16 (approx interpolated). AWG = -4.3125 LN (inch2) - 10.74 (approx interpolated). Logical AWG numbers are based on continuing the series in a logarithmic relationship to the cross sectional area of the wire.
Abbreviation: MPI. The use of radioactive isotopes, such as 201Tl or 99mTc sestamibi, to gauge the blood supply and viability of the regions or walls of the heart. MPI is frequently used to assess patients with coronary artery disease, often in conjunction with exercise tolerance tests. A patient with a coronary artery that is almost totally blocked may take up only a small quantity of radioisotope during exercise but much more of the tracer after several hours of rest.