When a CT scan, X-ray or nuclear imaging is determined to be the most appropriate test, we follow the ALARA (as low as reasonably achievable) principle to minimize the amount of radiation necessary to provide diagnostic information. This includes limiting CT scan protocols to a single phase when possible.
All of our CT scanners are state-of-the-art with integrated dose reduction technology. This includes tube current modulation, which uses computer algorithms to adjust the current and radiation dose based on attenuation of the area being imaged. For cardiac CT, we use a prospective ECG-gating technique that dramatically lowers radiation exposure, achieving the lowest possible dose for coronary CT that is approximately 80% lower than a diagnostic cardiac catheterization. RAF uses carefully crafted protocols for all CT imaging to achieve maximum diagnostic benefit with the lowest possible radiation exposure.