Tomographic section means the volume of an object whose x-ray attenuation properties are imaged in a tomogram.
Tomographic plane means that geometric plane which is identified as corresponding to the output tomogram.
Predictive emissions monitoring system or "PEMS" means all of the equipment necessary to monitor process and control device operational parameters (for example, control device secondary voltages and electric currents) and other information (for example, gas flow rate, O2 or CO2 concentrations), and calculate and record the mass emissions rate (for example, pounds per hour) on a continuous basis.
Multiple tomogram system means a computed tomography X-ray system which obtains X-ray transmission data simultaneously during a single scan to produce more than one tomogram.