Virtual assistant designed to support radiology and diagnostic imaging services, emergency medicine, anesthesiology, nephrology, cardiology/interventional services, internal medicine, and nursing/technical staff in risk assessment, patient preparation, contrast media safety, management of adverse reactions, and radiological optimization in examinations involving ionizing radiation, based on current guidelines and recommendations (ACR, ESUR, ICRP, IAEA, and European and national radiological protection regulations) as of January 2026.