X-Ray rapid Review - Tips & Tricks

Explore characteristic radiation produced in x-ray tubes via inner-shell electron transitions, revealing k alpha and k beta photon emissions, binding energies, and tungsten target specifics.

Bremsstrahlung radiation makes up about 80% of x-ray tube emission, creating a continuous spectrum, while characteristic radiation (k alpha, k beta) and mammography filters shape dose.

Explore how x-ray photons interact with matter to cause attenuation through photoelectric absorption, Compton scattering, Rayleigh scattering, and pair production.

Learn how absorbed dose in gray (joule per kilogram) and equivalent dose in sievert use radiation weighting factors, tissue weighting factors, and linear energy transfer to assess risk.

Explain how ionizing radiation affects living tissue via deterministic and stochastic effects, noting threshold doses for deterministic outcomes like cataracts and skin injury, and no-threshold cancer and hereditary risks.

Explore the x-ray tube’s cathode and anode, tungsten filament and focusing cup, and learn how thermionic emission, 30–150 kV, and heat management produce x-rays toward the target.

X-ray geometry depends on focus-object distance, object-image distance, and focus-image distance to govern magnification, distortion, and sharpness; the air gap technique increases object-image distance to boost contrast.

Explore computed radiography fundamentals, including the CR plate, phosphor layers, electron traps, and laser readout, and compare indirect and direct digital radiography, with resolution considerations.

Explore how the mammography x-ray tube uses angling and compression to optimize image density, reduce motion, and control dose with molybdenum or rhodium filters.

Explore how fluoroscopy uses an image intensifier to convert x-rays into real-time visuals. Learn about the input and output screens, electron focusing electrodes, and the cesium iodide phosphor layer.