1. A computer-implemented method for quality assurance in radiology, comprising: retrieving quality assurance and exposure parameters from a database of a computer system; receiving information on technical variables, including radiation exposure parameters, from radiographic equipment in the performance of an imaging study on said individual patient; determining whether a cumulative exposure exceeds a predetermined threshold; and utilizing one of specialized relatively low-dose protocols, imaging examinations without ionizing radiation, and/or analysis of future imaging examination requests, when said cumulative exposure exceeds said predetermined threshold.