Radiography 19 Dec Welcome to your Radiography Name: Email: [The use of filtration:] Greatly reduces receptor exposure because of the absorption of short-wavelength x-rays Greatly reduces radiographic receptor exposure because of the absorption of high-energy x- rays Increases radiographic receptor exposure by removinglong-wavelength x-rays Has little effect on receptor exposure because x-raysremoved from beam are not image- producing rays None . [Barium sulfate should be mixed with water at what temperature for a barium enema?] 100° C 75° F 85° C 100° F None . [Hands should be washed:] At least five times during each shift to help stop the spread of infections Before and after contact with each patient and before touching equipment Every hour regardless of patient contact Both with and without gloves None . [According to NCRP Report #116, the annual occupational effective dose limit is:] 50 mSv 10 mSv 0.50 mSv 0.05 mSv None . [Which photon-tissue interaction makes radiography possible because of its creation of contrast?] Compton Coherent Photoelectric Pair production None . [Which of the following statements regarding filtration is true?] Total filtration must not be less than 2-mm aluminum equivalent Total filtration must remove all soft rays from the beam Total filtration (added + compensating) must not be less than 2.5-mm aluminum equivalent Total filtration (not less than 2.5-mm aluminum equivalent) = inherent filtration (glass envelope, tube housing, oil) + added filtration (aluminum) None . [The window level in computed radiography is the:] Area of the patient being irradiated Amount of radiation needed to obtain the image Midpoint of densities Top of the midpoint of densities None . [Beam restrictors reduce the amount of scatter produced by reducing which of the following?] Characteristic rays Photoelectric effect Compton interactions Pair production None . [A readout on the fluoroscopic monitor that indicates air kerma striking the surface of the patient is:] mA meter DAP meter ESD meter kVp meter None . [The lateral surface of the stomach is called the:] Rugae Pylorus Fundus Greater curvature None . [What changes AC to DC?] Step-down transformer Rectifier Cathode Timer None . [Which of the following describes the radiosensitivity of lymphocytes?] Low radiosensitivity Least radiosensitive cells in the body Most radiosensitive cells in the body There is no connection between lymphocytes and radiation exposure None . [Structure M is the fig. ] Talus Navicular Cuboid Fifth metatarsophalangeal joint None Comment . [Structure D is the fig.] Zygomatic arch Anterior nasal spine Bony nasal septum (perpendicular plate of ethmoid and vomer) Angle of mandible None Comment . [A radiographer who is assisting with a sterile procedure but is not gloved and gowned:] Should stand between the physician and the sterile field Should carefully place all utensils needed in the center of the sterile field by dropping them after removing them from their packages May briefly come in contact with the sterile field to move utensils around May not have contact with the sterile field or anyone who is scrubbed in None . [Compared with ova in younger and older women, ova in women of reproductive age are:] More radiosensitive Less radiosensitive About the same None . [Violation of confidentiality defines:] Assault Battery False imprisonment Invasion of privacy None . [When a lateral projection of the knee is performed, the knee should be:] Extended 20 to 30 degrees Flexed to a 90-degree angle Flexed 20 to 30 degrees Fully extended None . [What describes any plane parallel to the midsagittal plane?] Transverse plane Midcoronal plane Median sagittal plane Sagittal plane None . [What is a defect of the posterior aspect of the spinal canal caused by failure of the vertebral arch to form properly?] Jefferson fracture Hangman fracture Spondylolysis Spina bifida None . [Flushing, urticaria, and nausea are symptoms of what type of contrast agent reaction?] Local irritation Cardiovascular shock Anaphylactic shock Psychogenic shock None . [The structure designated as I is the fig.] Carpometacarpal joint Interphalangeal joint Proximal phalanx Distal interphalangeal joint None Comment . [The primary controlling factors of receptor exposure are:] kVp and mAs mAs and SID SID and OID SID, OID, FSS None . [If the exposure field is not accurately recognized, the histogram:] Narrows Widens Remains the same None . [Which of the following is accurate as low as 50 μGya?] TLD Film badge Pocket ionization chamber Handheld ionization chamber None . [During movement and transfer of patients, urinary catheter bags should be:] Safely placed on the patient’s abdomen Kept below the level of the urinary bladder Kept below the level of the x-ray table Kept on the cart or wheelchair None . [Digital systems operate at what speed class?] 200 400 100 The speed class chosen by the radiographer None . [The measure of a grid’s ability to enhance contrast is called:] Grid ratio Grid selectivity Speed Contrast improvement factor None . [Medical x-rays are an example of:] Natural background radiation Artificially produced radiation Nonionizing radiation Ionizing, natural background radiation None . [This type of infection transmission occurs as a result of coughing or sneezing:] Contact transmission Airborne transmission Droplet transmission Common vehicle transmission None . Time's up
