ABSTRACT
Radiation protection ensures that ionizing radiations are used in a safe way. Radiation protection in medicine is underpinned by the principles of justification and optimization. Anti-scatter grids improve image contrast by absorbing scattered radiation produced by the patient, but increase patient dose when willing to keep detector dose constant. Clinical image quality in radiology always needs to be at the front. The selected power curves for a given acquisition protocol will automatically determine the X-ray tube voltage and current, the beam filtering, on the basis of the detector dose rate. Fluoroscopy is a real-time X-ray imaging modality. The use of fluoroscopy in medicine is ever increasing, due to many upsides of the technology. Diagnostic X-ray imaging contributes to about 25% to 50% of the total annual effective dose of the general population in Western Countries, and computed tomography is the largest single source of this medical exposure.
