Fundamentals of Radiography and Electromagnetic Radiation Quiz

Gamma rays have the shortest wavelength among electromagnetic radiations.

Gray is the fundamental unit of radiation dose, measuring the amount of energy deposited per unit mass.

The Roentgen is the unit of measurement for radiation exposure in air.

Ultraviolet rays are not a type of ionizing radiation; they do not have sufficient energy to ionize atoms.

Lead is commonly used as a shield against ionizing radiation due to its high atomic number and density.

'ALARA' stands for 'As Low As Reasonably Achievable' and emphasizes minimizing radiation exposure to the lowest possible level.

X-ray generation in radiography is based on the principle of photonic emission from accelerated electrons.

Gamma rays have the highest energy among electromagnetic radiations.

A grid in radiography is used to reduce scatter radiation and improve image contrast.

The anode in the X-ray tube accelerates electrons towards the target for X-ray generation.

The collimator in radiography is used to shape the X-ray beam and control its size and direction.

MRI is commonly used to visualize soft tissues as it does not involve ionizing radiation.

The absorption of X-rays in a material is influenced by the density of the material.

The inverse square law describes how radiation intensity decreases with the square of the distance from the source.

The anode heel effect compensates for radiation divergence, ensuring uniform exposure in X-ray imaging.

Characteristic radiation occurs when inner-shell electrons are ejected, and outer-shell electrons fill the vacancies, emitting X-rays.

Scattering is the phenomenon where X-rays change direction due to interaction with matter.

Rayleigh scattering is an example of coherent scattering in radiography, involving the elastic scattering of X-rays by atoms.