A portable medical digital radiography apparatus includes a ruggedized transport case housing several system components, a digital X-ray image sensor and an X-ray generator. The reduced seeding results in less inclusions or pitting in the coating. The transmitter includes a modulation apparatus that has a symbol mapping circuit, which receives data symbols to be transmitted and maps the data symbols to a transmission code. The common characteristics are then compared with characteristics derived from data known to derive from fraudulent activity, and the common characteristics are reported, along with a weight or probability that the anomaly associated with the common characteristic is an identification of risks of material misstatement due to fraud. The first and second arms are inserted into the arm-receiving opening.