Welcome to your Radiography Name: Email: [The exposure switch must keep the radiographer behind the:] Primary protective barrier Secondary protective barrier X-ray tube Door None . [The central ray for an AP projection of the hip is:] Directed parallel to a point 2 inches medial to the ASIS and at the level of the superior margin of the greater trochanter Directed parallel to a point 2 inches lateral to the ASIS and at the level of the superior margin of the greater trochanter Directed parallel to a point 2 inches medial to the ASIS and at the level of the inferior margin of the greater trochanter Directed 2.5 inches distal on a line drawn perpendicular to the midpoint of a line between the symphysis pubis and the ASIS 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 . [Cells that are least sensitive to radiation exposure include:] Ova and sperm Epithelial cells Nerve and muscle cells Blood cells None . [Waves of radiation are called:] Sine waves Strong waves Signal waves Current waves None . [The process of thermionic emission causes:] Electrons to boil off the anode The anode to spin The cathode to cool quickly Electrons to boil off the filament None . [According to NCRP Report #116, what is the annual effective occupational dose limit for the lens of the eye?] 1.5 mSv 1.0 mSv 100 mSv 150 mSv None . [Structure I is the fig. ] Talus Navicular Tuberosity Second or intermediate cuneiform None Comment . [Which of the following is used to represent the mean marrow dose?] GSD ALARA MMD DMM None . [The filament is kept warm by:] A standby current from the time the x-ray machine is turned on Insulating oil Lead housing Current produced only during exposures None . [What is the most common body habitus, present in about 50% of the population?] Hypersthenic habitus Sthenic habitus Hyposthenic habitus Asthenic habitus None . [A case involving obvious negligence would be defined by the doctrine of:] Respondeat superior Slander Libel Res ipsa loquitur None . [The radiographer must be proficient in the use of which of the following medical instruments?] Angiography catheter Sphygmomanometer Thermometer Oxygen administration equipment None . [Patient transfer from cart to x-ray table should be performed:] Alone when working evenings or nights By radiographers working in pairs at all times Alone when the department is busy or has a staff shortage In pairs only when other radiographers are available to assist None . [Attenuation:] Is radiation that emerges from the patient Describes changes in the x-ray beam as it travels through the patient Produces only scatter radiation Occurs only at doses used in radiation therapy None . [The strength of the magnetic fields in a transformer is increased by:] Coiling the wires and placing them in adjoining machines Coiling the wires and letting their magnetic fields overlap Keeping the wires very straight, increasing their effectiveness Replacing the wires with diodes None . [Undesirable fluctuations in brightness are called:] MTF Image noise Quantization Scintillation None . [From where is the visible image distributed to viewing or recording media? fig. ] A B C D None Comment . [The intensity of the scattered beam is 1⁄1000 the intensity of the primary beam at a ________ angle 1 m from the patient.] 45-degree 25-degree 90-degree 10-degree None . [Cell radiosensitivity is described by the:] Inverse square law Law of Bergonie and Tribondeau Reciprocity law Ohm’s law None . [Leakage radiation from a diagnostic x-ray tube may not exceed:] 1 mGya per hour, measured at the source 10 mGya per hour 1 mGya per hour, measured at 1 m from the housing 100 mGya per hour, measured at 1 m from the housing None . [The ARRT Rules of Ethics and Code of Ethics are contained in what document?] Standards of Ethics Practice Standards Mission Statement Scope of Practice None . [What percentage of energy in the x-ray tube is converted to x-rays?] 99% 75% 1% 100% None . [For AP projection of the foot, the central ray enters at the:] Head of the third metatarsal Head of the second metatarsal Base of the first metatarsal Base of the third metatarsal None . [Structure A is the fig] Renal pelvis Ureter Minor calyces Major calyces None Comment . [The eleventh and twelfth pairs of ribs are called:] Manubrium Floating Xiphoid Jugular notch None . [The collimator must be accurate to a level of:] ±4% of SID ±5% of SID ±2% of SID ±10% of SID None . [Critique Figure] Radiograph was taken with central ray angled 15 degrees caudad Radiograph was taken with central ray angled 0 degrees Radiograph was taken with central ray angled 15 degrees cephalad Radiograph was taken with MSP perpendicular to central ray None Comment . [The prefix that means “above” is:] Hypo- Ex- Ect- Hyper- None . [When a nongrid technique using 10 mAs and 75 kVp is changed to a 12:1 grid using 75 kVp, what new mAs must be used to create the same image?] 50 mAs 2 mAs 40 mAs 120 mAs None . Time's up
