Welcome to your Radiography Name: Email: [A positive contrast agent that may be administered to a patient when barium sulfate is contraindicated is called:] Barium thiosulfate Iodine Air Aqueous iodine compound None . [For PA axial projection of the clavicle, the central ray is angled:] 25 to 30 degrees caudad 25 to 30 degrees cephalad 20 degrees caudad 20 degrees cephalad None . [Structure b is the fig] Transverse colon Ascending colon Hepatic flexure Descending colon None Comment . [What is located in the x-ray circuit between the highvoltage transformer and the x-ray tube?] Step-down transformer Rectifier Cathode Timer None . [In digital fluoroscopy and computed radiography, the energy must be changed to digital form by a(n):] Digital-to-analog converter Flux capacitor Analog-to-digital converter DVD-ROM None . [Exposure linearity must be accurate to within:] 4 5% 2% of SID 10% None . [Structure G is the fig.] Hamate Trapezium Trapezoid Capitate None Comment . [The study of contrast agents, their administration, and possible reactions fall under the category of:] Nursing Pharmacology Emergency care Respiratory care None . [A system that emphasizes the placement of barriers between the health care worker and the patient is called:] Universal precautions Standard precautions Universal safety Infection barriers None . [Most radiographic imaging of the skull has been replaced by what imaging modality?] Magnetic resonance imaging Nuclear medicine Angiography Computed tomography None . [Improper use of grids with a digital imaging system may cause an artifact known as:] Moire pattern Grid cutoff Motion artifact Quantum mottle None . [Which of the following photon–tissue interactions does not occur in diagnostic radiography?] Photoelectric interaction Compton interaction Coherent scatter Pair production None . [Which of the following bones has a dens?] Atlas Axis Thoracic vertebra Lumbar vertebra None . [If the angle on the anode is decreased, what effect is there on spatial resolution?] Increases Decreases No appreciable effect None . [The law governing patient confidentiality is abbreviated:] CDC HHS ALARA HIPAA None . [Use of which of the following would provide an improved image of the femur?] Wedge filter Anode heel effect Short SID Long OID None . [Which bone is located in the wrist, between the lunate and the pisiform?] Scaphoid Hamate Pisiform Triquetrum None . [Which of the following part(s) of the humerus articulate(s) with the ulna?] Greater and lesser tubercles Bicipital groove Capitulum Trochlea None . [Digital image receptors are more sensitive to:] Scatter and background radiation Fluorescent lights Free electrons Free radicals None . [What is the most commonly used AEC?] Phototimer mA meter Ionization chamber Falling load generator None . [Which of the following may be used to measure in-air exposures in a fluoroscopic room?] TLD Film badge Handheld ionization chamber Geiger-Mueller detector None . [The most common site of health care-acquired infections (HIA) is:] Open wound Compound fracture Urinary catheter Surgical sutures None . [Rugae may be found in the fig. ] Esophagus Stomach Small intestine Large intestine None Comment . [Which of the following would be applicable to radiation therapy?] Inverse square law Law of Bergonie and Tribondeau Reciprocity law Ohm’s law None . [Structure D is the fig. ] Medial condyle Lateral epicondyle Lateral condyle Tibial plateau None Comment . [A longer than usual OID may cause:] Elongation Foreshortening Minification Magnification None . [What condition is a collapse of lung tissue and is harder to penetrate?] Atelectasis Bronchogenic carcinoma COPD Emphysema None . [What item is used to administer oxygen through the nose?] Crash cart Suction unit Defibrillator Nasal cannula None . [TLDs are heated and release what type of energy to indicate dose?] Laser Visible light X-rays Gamma rays None . [Which of the following primarily involves loosely bound outer-shell electrons?] Photoelectric interaction Compton interaction Coherent scatter Pair production None . Time's up
