New Quiz 19 Dec Welcome to your Radiography Name: Email: [Visibility of an object’s edge may be limited by:] Speed class Modulation transfer function Contrast resolution Quantum noise 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 G is the fig.] Hamate Trapezium Trapezoid Capitate None Comment . [The x-ray beam changes as it travels through the patient by a process called:] Filtration Attenuation Electrification Annihilation None . [The effective dose limit for radiographers for localized areas of skin is:] 50 mSv per year 500 mSv per year 0.5 mSv monthly 10 mSv monthly None . [Common vehicle transmission involves:] The spread of infection in crowded forms of public transportation, such as jet aircrafts, subways, and trains Food, water, medications, and equipment Animals Plants None . [The energy stored in an OSL dosimeter is released when the dosimeter is exposed to:] Heat White light Laser Ultrasound None . [What is a tumor that arises on bone with a large bubble appearance and may be benign or malignant?] Trimalleolar fracture Giant cell myeloma Osteoarthritis Pott fracture None . [The winged infusion set used for venipuncture is also known as:] IV catheter Hypodermic needle Butterfly Winged injection set None . [Damage to the cell being irradiated is called:] Genetic Exposed cell Somatic Molecular None . [As beam restriction increases (becomes tighter):] Receptor exposure increases Receptor exposure increases as a result of focusing of x-rays Receptor exposure decreases Receptor exposure is not affected None . [Digital imaging is driven by:] kVp mAs IR speed class Exposure None . [According to NCRP Report #116, what is the annual effective dose limit for radiography students older than age 18?] 50 mSv 10 mSv 0.50 mSv 0.05 mSv None . [Highly reactive ions that have unpaired electrons in the outer shell are called:] Electrified Radiolytic Hydrogen peroxide Free radicals None . [Instead of Vidicon or Plumbicon tubes, what device may be used in the television system?] Charge-coupled device (CCD) C-arm Automatic brightness control Output phosphor None . [What condition appears in an “apple-core” pattern on a barium enema exam?] Annular carcinoma Crohn disease Hiatal hernia Ileus None . [The structure designated as IV is the fig. ] Tubercle Lateral condyle Medial condyle Intercondylar eminence None Comment . [Graphs that show the relationship between radiation received and the organism’s response are called:] Response curves Exposure curves Dose-response curves Radiation-threshold curves None . [The law that states that cells are most sensitive to radiation when they are nonspecialized and rapidly dividing is the:] Inverse square law Law of Bergonie and Tribondeau Reciprocity law Ohm’s law None . [For AP radiography of the foot, which of the following statements are true? 1. A wedge-compensating filter may be used 2. The dorsal surface rests on the image receptor 3. The central ray is directed 10 degrees toward the heel 4. The central ray is directed at the head of the third metatarsal] 1, 2, 3, 4 1, 3 2, 4 1, 3, 4 None . [The structure designated as III is the fig. ] Tubercle Lateral condyle Medial condyle Intercondylar eminence None Comment . [Structure c is the fig] Transverse colon Ascending colon Hepatic flexure Splenic flexure None Comment . [The structure designated as I is the fig.] Vertebral border Scapular notch Body Axillary border None Comment . [The structure designated as III is the Fig. ] Ulna Metacarpal Radius Humerus None Comment . [The photoelectric effect is responsible for:] The brightness of the image Producing scatter radiation Differential absorption of the x-ray beam by the body Spatial resolution None . [The highest incidence of contrast agent reactions occurs with the use of:] Negative contrast media Ionic iodinated contrast media Nonionic iodinated contrast media Barium sulfate 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 means there is no safe level of radiation and the response to the radiation is not directly proportional to the dose received?] Nonlinear-nonthreshold effect Linear-nonthreshold effect Linear-threshold effect Nonlinear-threshold effect None . [What plane passes transversely across the body?] Transverse plane Midcoronal plane Median sagittal plane Sagittal plane None . [Minimal (M) readings on dosimeter reports mean:] A dose below the sensitivity of the dosimeter has been received A maximum dose has been received A mean (average) dose has been received Much radiation has been received None . Time's up
