Welcome to your Radiography Name: Email: [As kVp increases, there is an increased production of:] Long wavelengths Low-energy waves Short wavelengths Electrons None . [TLDs are heated and release what type of energy to indicate dose?] Laser Visible light X-rays Gamma rays None . [What is the most commonly used AEC?] Phototimer mA meter Ionization chamber Falling load generator None . [When the PA projection of the skull is performed to image the frontal bone: 1. The central ray is directed perpendicular to the IR 2. The OML is perpendicular to the IR 3. The central ray exits at the glabella 4. MSP is parallel to the cassette] All are true 1, 2 1, 3, 4 1, 3 None . [If it is necessary to reduce exposure by half, and it is impossible to do so by changing mAs, the radiographer may:] Reduce SID by half Double SID Decrease kVp by 15% Decrease kVp by 50% None . [Structure H is the fig.] Ulnar head Olecranon process Radial head Medial epicondyle None Comment . [The structure designated as III is the Fig. ] Ulna Metacarpal Radius Humerus None Comment . [Electricity is supplied to the imaging department by a:] Motor Rectifier Generator Voltmeter None . [The radiographer must be proficient in the use of which of the following medical instruments?] Angiography catheter Sphygmomanometer Thermometer Oxygen administration equipment None . [The feature that automatically adjusts kVp and mA during fluoroscopy is called:] AEC ABC DQE SNR None . [When you are performing trauma radiography:] Splints, bandages, and cervical collars should be removed so that they do not obstruct the anatomy that must be imaged Remove cervical collars only under the direction of a radiologist Remove cervical collars only under the direction of an emergency department physician or radiologist Splints, bandages, and cervical collars should be removed only after preliminary images have been viewed by a physician so that they do not obstruct the anatomy that must be imaged None . [The filament circuit makes use of what type of transformer?] Step-up Autotransformer Step-down Falling load None . [A radiographer should wear eye protection:] Any time blood may be present Any time an injection is being made Any time there is a possibility of blood splashing With nearly all patients 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 . [Structure b is the fig] Transverse colon Ascending colon Hepatic flexure Descending colon None Comment . [The structure designated as IV is the fig.] Superior vertebral notch Superior articular process Transverse process Spinous process None Comment . [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 smallest area represented in a digital image is the:] Image matrix Pixel Voxel Bit None . [The portion of the image-intensifier tube that converts visible light to electrons is the:] Output phosphor Photocathode Input phosphor Anode None . [Which set of exposure factors would produce the lowest receptor exposure?] 80 mAs, 85 kVp, 40-inch SID, 1.2-mm focal spot 40 mAs, 60 kVp, 40-inch SID, 0.5-mm focal spot 160 mAs, 70 kVp, 40-inch SID, 1.2-mm focal spot 160 mAs, 90 kVp, 40-inch SID, 0.5-mm focal spot None . [Lead aprons must be worn to protect against which photon–tissue interaction?] Compton Coherent Photoelectric interaction Pair production None . [Which of the following does not require the use of gloves? 1. Airborne 2. Droplet 3. Contact] 1 only 2 only 1, 2 1, 3 None . [The process of eliminating all organisms from the environment by gas sterilization, use of germicides, or use of dry heat is called:] Surgical asepsis Sterilization Medical asepsis Autoclaving None . [A primary advantage of digital fluoroscopy is:] Postprocessing manipulation of the image No radiation dose to the patient No fluoroscopist required Lower cost None . [If kVp is increased, what happens to attenuation of the beam in the patient?] Increase Decrease No appreciable effect None . [Smoothing software may result in:] Enhanced fine detail Less distortion Loss of fine detail Increased distortion None . [For a patient who has a history of intravenous urography and no contrast agent reactions:] The radiographer may assume there would be no reaction on subsequent intravenous urograms The radiographer must assume there is a chance of a reaction on other contrast examinations The radiographer must assume there is a chance of a reaction on subsequent intravenous urograms There is no chance of reactions on subsequent intravenous urograms None . [If SID is doubled, what may be said about receptor exposure?] Receptor exposure doubles Receptor exposure is reduced by one half Receptor exposure is reduced by new mAs2 Receptor exposure is reduced to one fourth None . [What is the site of most nosocomial (health careacquired) infections?] Urinary catheter Chest tube NG tube Venous catheter None . [If OID is decreased, what is the effect on spatial resolution?] Increases Decreases No appreciable effect None . Time's up
