Introduction to Radiologic Imaging Science Patient Care Study Questions and Answers

ALARA stands for As Low As Reasonably Achievable Becquerel (Bq) unit of radioactivity in the International System of Units, equal to one disintegration per second classic coherent scattering introduction where the matter in which a low-energy phantom is absorbed and released with its same energy frequency and wavelength but with a change of Direction Compton scattering interaction with matter in which a higher energy Phantom strikes a Loosely bound outer electron removing it from its shell and the remaining energy is released as a scattered photon Curie (Ci) unit of radioactivity defined as the quantity of any radioactive nuclear tide in which the number of disintegrations per second is 3.7 * 10 to the 10th power 3.7 x 10^10 Numerically 1 curie = ___ disintegrations per second (dps). germ cells Reproductive cells that give rise to sperm and ovum Gray (Gy) unit in the International System used to measure the amount of energy absorbed in any medium 1 Gy = 100 radiation absorbed doses International System (SI) of Units System of Units based on metric measurements developed in 1948 and having units used to measure radiation kiloelectron volts units of electron equal to 1000 electron volts pair production interaction between matter and the photon processing a minimum of 1.2 million electron volts of energy producing two oppositely charged particles a positron and a negatron photodisintegration direct interaction with the nucleus of the atom causing a state of excitement within the nucleus followed by the emission of a nuclear fragment photoelectric interaction interaction with matter in which a photon strikes and inner shell electrons causing its ejection from orbit with the complete absorption of the photons energy