Welcome to your Radiography Name: Email: [Structure G is the fig.] Talus Navicular Cuboid Second or intermediate cuneiform None Comment . [What converts light into a charge?] Diode Cathode AC to DC converter Photodiode None . [An indicator of the dose level needed to acquire an optimal image is:] Detective quantum efficiency Dose area product Field of view Dynamic range None . [An imaging exam using a contrast agent to evaluate possible herniated intervertebral discs is called a(n):] Arthrogram Spinal study Myelogram Discography None . [The ability of different types of radiation to produce the same biological response in an organism is called:] LET WR RBE Doubling dose None . [What device uses maximum heat storage ability of the tube to deliver mAs?] Anode mA meter Ionization chamber Falling load generator None . [Air must not be injected when performing venipuncture because:] An air embolus would form and may become fatal to the patient Most examinations requiring injection are not air contrast studies It would interfere with the iodine It would prevent visualization of the iodine None . [Choose all that are true concerning grids (choose 3):] Contrast improvement factor is the measure of the ability of a grid to enhance contrast Grid selectivity is the ratio of primary radiation transmitted through the grid to secondary radiation transmitted through the grid Grids are used when part thickness is less than 10 cm GCF is the amount of increase in kVp necessary when converting from nongrid to grid technique The primary purpose of grids is radiation protection The main function of grids is to prevent Compton scatter from reaching the IR Grids prevent the production of scatter None . [The structure designated as I is the Fig.] Pars interarticularis Superior articular process Pedicle Lamina None Comment . [As speed class decreases:] The likelihood of noise increases Noise is unaffected Patient exposure increases Sharpness decreases None . [The cumulative occupational exposure for a 48-yearold radiographer is:] 48 mSv 480 mSv 24 mSv 0.48 mSv None . [Structure D is the fig.] Zygomatic arch Anterior nasal spine Bony nasal septum (perpendicular plate of ethmoid and vomer) Angle of mandible None Comment . [The speed of x-rays is based on:] mAs kVp Size of the patient The fact that they are a form of electromagnetic radiation None . [The structure designated as IV is the fig. ] Spinous process Transverse process Pedicle Pars interarticularis None Comment . [Exposure reproducibility must be accurate to within:] 4 5% 2% of SID 10% None . [Which of the following is used to survey an area for radiation detection and measurement?] TLD Film badge Handheld ionization chamber Geiger-Mueller detector None . [What condition involves chronic inflammation of portions of the bowel?] Annular carcinoma Crohn disease Hiatal hernia Ileus None . [For an AP projection of the femur:] The lower leg should be rotated laterally 15 degrees The central ray is directed toward the affected joint The patient is prone The lower leg is rotated medially 15 degrees None . [What unit of measurement is used for absorbed dose in tissue?] Gya Gys Gyb Gyt 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 . [The structure designated as III is the fig.] Lamina Spinous process Superior articular process Pedicle None Comment . [A grid with lead strips and aluminum interspacers that are angled to coincide with the divergence of the x-ray beam is called a:] Parallel grid Focused grid Crosshatch grid Rhombic grid None . [Violation of confidentiality defines:] Assault Battery False imprisonment Invasion of privacy 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 . [What condition is visualized by performing an upper GI series?] Diverticula Ulcerative colitis Pyloric stenosis Adynamic ileus None . [Distortion that occurs when the x-ray beam is angled along the long axis of a part is:] Elongation Magnification Minification Misrepresentation None . [When radiation strikes DNA, which of the following occurs?] Direct effect Law of Bergonie and Tribondeau Target theory Indirect effect None . [Which of the following states that each cell has a master molecule that directs all cellular activities and that, if inactivated, results in cellular death?] Indirect effect Target theory Direct effect Mutations None . [Radiation exiting the patient in very divergent paths would be indicative of] Photoelectric rays Scatter Coherent interaction Patient motion during the exposure None . [Which of the following is a legitimate contraindication `to the use of iodinated contrast media?] Allergy to seafood Known sensitivity to proteins Previous sensitivity to contrast agents Allergy to any medications None . Time's up
