Welcome to your Radiography Name: Email: [Which bone lies along the lateral border of the navicular bone?] Navicular Calcaneus Talus Cuboid None . [Which of the following is responsible for creating the conditions for contrast on the image?] Photoelectric interaction Compton interaction Coherent scatter Pair production None . [Waves of radiation are called:] Sine waves Strong waves Signal waves Current waves None . [The law of Bergonie and Tribondeau states:] Radiation intensity is inversely proportional to the square of the distance Cells are most sensitive to radiation when they are immature, undifferentiated, and rapidly dividing Voltage is equal to current times resistance All radiation exposure causes damage to the cell None . [Which of the following may be considered as an example of battery?] Violating HIPAA Radiographing the wrong patient or body part Verbally abusing a patient Criticizing a physician’s order in front of a patient None . [Most radiation-induced damage to cells occurs:] At diagnostic levels of radiation During fluoroscopy At doses of radiation much higher than doses used in radiography From background radiation None . [Causing a patient to become apprehensive of being injured is called:] Assault Battery False imprisonment Invasion of privacy None . [What are graphs called that show the relationship between dose of radiation received and incidence of effects?] Nonlinear-nonthreshold effect Linear-nonthreshold effect Radiation-effect curves Dose-response curves None . [The force with which the electron stream passes fromcathode to anode is a result of _____ passing through the x-ray tube.] Current Kilovoltage Tungsten Heat None . [Spatial resolution is:] Photographic representation of the part being radiographed Controlled by kVp Controlled by mAs Geometric representation of the part being radiographed None . [Which set of exposure factors would produce the greatest receptor exposure?] 100 mAs, 70 kVp, 0.5-mm focal spot, 60-inch SID 200 mAs, 60 kVp, 1.2-mm focal spot, 60-inch SID 100 mAs, 70 kVp, 1.2-mm focal spot, 60-inch SID 300 mAs, 90 kVp, 0.5-mm focal spot, 60-inch SID None . [Which of the following bones has a coronal suture?] Frontal bone Temporal bone Occipital bone Parietal bone None . [What plane passes vertically through the midline of the body from front to back?] Transverse plane Midcoronal plane Median sagittal plane Sagittal plane None . [This type of infection transmission occurs as a result of coughing or sneezing:] Contact transmission Airborne transmission Droplet transmission Common vehicle transmission None . [The exposure switch must keep the radiographer behind the:] Primary protective barrier Secondary protective barrier X-ray tube Door None . [Bit depth is equal to:] 2n (n equals the number of bits) 4096 shades of gray Pixel pitch Bits times bytes None . [When a lateral knee projection is performed, which of the following statements are true? 1. The patient turns onto the affected side 2. The knee is flexed 20 to 30 degrees 3. The patella must be parallel to the image receptor 4. The central ray is directed 5 to 7 degrees caudad 5. The central ray enters the knee joint inferior to the medial epicondyle] 1, 2, 3 1, 2, 3, 5 1, 2, 5 1, 2, 4, 5 None . [What allows more anatomic structures to be captured during an exposure?] Contrast resolution Spatial resolution Dynamic range MTF None . [The preferred term for radiation exposure is:] Coulombs per kilogram Gray Sievert Air kerma None . [For AP oblique projections of the sacroiliac joints, the central ray is directed:] 1 inch lateral to elevated ASIS 1 inch medial to elevated ASIS 1 inch lateral to dependent ASIS 1 inch medial to dependent ASIS None . [The radiographer must be proficient in the use of which of the following medical instruments?] Angiography catheter Sphygmomanometer Thermometer Oxygen administration equipment None . [Natural background radiation represents what percentage of humans’ radiation exposure?] 21% 50% 82% 5% None . [The available gray scale of an imaging system is determined by:] Pixel pitch Bit depth Exposure latitude Image latitude None . [What refers to the lifetime accumulated occupational dose?] Annual accumulated effective dose Cumulative effective dose Common effective dose Common medical effective dose None . [Infectious waste must be handled according to which of the following?] Radiation protection guidelines Radiology department rules CDC guidelines The condition of the patient None . [Choose all that are properties of x-rays (choose 6):] Electrically negative Affect film emulsion Scatter and produce secondary radiation Invisible to the human eye Travel at the speed of light (186,000 miles per hour) Possess wavelengths between 1 Å and 5 Å Travel in bundles of energy called photons Can ionize matter and gases Can be focused by collimators Cause phosphors to fluoresce None . [Devices in the x-ray circuit that operate on the principle of mutual induction are called:] Rectifiers Generators Timers Transformers None . [A concept of radiologic practice that encourages radiation users to adopt measures that keep the dose to the patient and themselves at minimum levels is called:] LET RBE MPD ALARA None . [The device in the x-ray circuit that changes AC to DC is the:] Autotransformer Step-up transformer Rectifier Falling load generator None . [The upper boundary dose that can be absorbed that carries a negligible risk of somatic or genetic damage to the individual defines:] Maximum permissible dose ALARA Law of Bergonie and Tribondeau Effective dose limit None . Time's up
