CTA practice test.docx

the collimator dial adjusts which of the following - correct answer beam field size the wavelength of scatter radiation is generally _____ the primary beam - correct answer longer than ionization results from the removal of which of the following - correct answer an electron from an atom what are the two types of interaction that occur in diagnostic radiology levels - correct answer photoelectric effect and compton effect the decrease of intensity of the x-ray beam as it passes through a body part is called what - correct answer attenuation a translation of the german word bremsstrahlung is _____ radiation - correct answer braking material placed between the x ray spice and the patient which absorbs less penetrating radiation is an - correct answer filter radiographic definition is impoverished at - correct answer maximum source image distance what factor effects x ray quality - correct answer kVp interactions between x ray and matter results in the highest occupational exposure - correct answer compton effect mad is determined by - correct answer multiplying mA by time radiolucent means - correct answer material that can be penetrated by roentgen rays high kvp yields x ray beam for which of the following - correct answer short wavelength The unit of absorbed dose in which of the following - correct answer rad radiation, which passes through a substance and is deviated in its direction is called _____ radiation - correct answer scatter which of the following 4 density categories in the body absorb x ray to the greatest degree - correct answer bone decreasing object-film distance will decrease which of the following - correct answer Magnification penumbra is defined as which of the following - correct answer the halo effect produced around a shadow which can obscure definition and detail Focal spot refers to which of the following - correct answer Point on the anode which of the following statements are correct radiographic studies - correct answer belong to the doctor, who took them, but should be released to other doctors for review sending digital images across great distance via the Internet for interpretation is termed what - correct answer teleradiology which of the following makes use of an image receptor plate in a cassette - correct answer CR which of the following is true regarding digital image acquisition systems (DAIS) - correct answer radiation dose information is available for each digital exposure In digital imaging right and left film markers indicators - correct answer should be placed inside the collimator light field with lead markers What advantages of DR systems are true - correct answer 3-5 second image acquisition, no cassette is required, no cassette reader is required A charged coupled device is typically found in which digital device - correct answer Digital camera in the digital CR system, what is the name of the sensitive phosphor - correct answer barium fluorohalide Imaging management system used in typical chiropractic offices are called - correct answer PACS which system incorporates a digital reader into x-ray takes process - correct answer computed radiography Grids are behind what - correct answer Collimator possible, long-term effect of radiation includes - correct answer cataracts in the eyes The information that the cell requires for metabolism is encoded by - correct answer DNA when an atom loses an electron from one of its orbits, the atom becomes - correct answer ionized The unit of dose equivalent is the - correct answer sievert (Sv) The intensity of radiation at a given distance from the source of radiation varies - correct answer inversely with the square of the distance The largest single man-made source of radiation exposure to the US population is from - correct answer medical radiography what is the recommended annual whole body dose equivalent limited for students under 18 years of age? - correct answer 0.5 sievert The term RBE stands for - correct answer relative biological effect the most radioresistant organ system in mammals is the _____ system - correct answer musculoskeletal what factor controls x-ray quantity - correct answer mAs Low energy protons are more readily attenuated because they lack what quality ability of high energy photons - correct answer penetrating The electrons are forced to move from the cathode to the anode by - correct answer Putting a high voltage across the x-ray tube A short scale of contrast is the same as - correct answer high contrast the _____ of an x-ray beam is the sum of inherent filtration, and any added filtration - correct answer total filtration radiographic definition is improved at - correct answer maximum source image distance