Provided is a circuit to convert input CMOS level signals having a predetermined duty cycle to CML level signals having a higher duty cycle. The method provides for the processing of PET data to accurately and efficiently determine a data signal-to-noise corresponding to each individual clinical patient scan, as a function of a singles rate in a PET scanner. The pair of edges are spaced a distance apart for the first edge to align with a first vertebral member, and the second edge to align with a second vertebral member. This particular power distribution system also includes an extension means mounted proximate the rack and having an electrical power input for input of electrical power to the extension means and a plurality of power outlets adapted to couple with and distribute electrical power to conducting elements that electrically connect the extension means to the mounted equipment.