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Radiology
| Question | Answer |
|---|---|
| 70. Which of the following statements are true? | b. X-rays with shorter wavelengths penetrate farther than rays with longer wavelengths. |
| 71. Electrons travel: | c. Toward the anode in an x-ray tube. |
| 72. Veterinary patients have a tendency to move while being positioned for radiographs to be taken. The radiographer should help to safely prevent artifacts of movement by: | a. Using the shortest exposure time possible. |
| 73. The anode’s target: | d. All of the above |
| 74. What is the thickness of the lead-impregnanted rubber lining protective apparel in veterinary radiography? | c. 0.5mm |
| 75. Scatter depends on: | d. All of the above |
| 76. Ways to increase penetrating power of x-rays include: | a. Increasing kVp |
| 77. The temperature of the filament within the cathode is controlled by: | d. mA setting |
| 78. Which of the following increases radiographic density? | b. Increased mAs |
| 79. Which of the following should have the shortest scale of contrast? | c. Femur |
| 80. The primary exposure factor that controls scatter radiation is: | a. kVp |
| 81. Which of the following statements is true? | d. Nonscreen film requires greater exposure |
| 82. Which of the following film-screen systems is most commonly used in veterinary medicine? | c. Medium-speed system |
| 83. What transformer in an x-ray machine controls the temperature of the filament? | c. Autotransformer |
| 84. What transformer controls the amount of kVp applied to the x-ray tube? | c. Autotransformer |
| 85. When depressing the "prep" switch on a rotating anode x-ray machine, you are effectively: | d. Heating up the filament and spinning the rotating anode |
| 86. The workplace program that has been developed to ensure radiation exposures are kept as low as possible is: | a. ALARA |
| 87. If cracks are present in protective apparel(PPE), they appear what when radiographed? | c. Black |
| 88. To take advantage of the "heel effect" a vet tech would do which of the following when positioning an animal for a study? | a. Place the thickest part of the patient toward the cathode side of the x-ray tube |
| 89. You have determined that penetration is adequate for a particular abdominal film. All structures are well outlined however the overall appearance of the film is too light. What should you do to make this a more diagnostic film? | b. Increase mAs by 30-50% |
| 90. When putting up a radiograph on the viewer for you veterinarian, how should you correctly position a VD of the abdomen? | d. With head of the animal at the top of viewer and the animals right is the viewer's left |
| 91. Which grid ratio can absorb more scatter radiation? | a. 8:1 |
| 92. Which of the following are means of eliminating artifacts due to motion? | d. Both a and c are correct |
| 93. All of the following will appear black on the finished film except: | c. Scratch on film emulsion |
| 94. A body part to be radiographed has a significant difference in density between the thickest and thinnest parts, you would do the following: | d. Take two separate exposures with different measurements |
| 95. Which of the following should have the shortest scale of contrast? | c. Femur |
| 96. For proper radiographic exposure, one should take maximum: | a. Expiration for the abdomen and inspiration for the thorax |
| 97. The film gets darker when I use more radiation. This is an example of: | c. c. direct proportionality. |
| 98. Rectifiers are used in the x-ray circuit to ensure that: | c. c. the current flows through the x-ray tube in a continu¬ous direction. |
| 99. X-rays are produced when ________ electrons are attracted to _______________ by an electromagnetic force. | b. b. negative, a positive anode |
| 100. A good technique chart and knowledge of image pro¬duction is essential because: | c. c. setting correct technical factors is essential to good imaging. |
| 101. The purpose of an intensifying screen is to: | c. c. convert the primary x-ray beam to light photons. |
| 102. Two types of film are ________ emulsion and ________ emulsion film. | d. d. double-, single- |
| 103. Screen speed is determined by the _____ of the emul¬sion and the ____ of the silver halide crystals. | c. c. thickness, size |
| 104. Milliamperage is responsible for the intensity of the radiation, which: | a. a. translates to the density on the image. |
| 105. Motion degrades the image: | a. a. because it detracts from resolution. |
| 106. The source-image distance (SID) is the measurement: | c. c. from the tube to the image receptor. |
| 107. Grid ratio describes: | b. b. the height of the lead strips compared with the dis¬tance between them. |
| 108. Processing a film requires four separates steps. Which of the following lists the correct order? | a. a. develop, fix, wash, dry |
| 109. Radiation workers should always reduce radiation doses by following the: | a. a. ALARA principle. |
| 110. When radiation strikes a cell the most vulnerable area is the: | b. b. DNA. |
| 111. Three methods of radiation protection are: | a. a. distance, leaded aprons, and leaded gloves. |
| 112. A dog is lying on its abdomen. The view of the tarsus in this position would be called: | b. b. plantarodorsal (PlD). |
| 113. The proper field of view for a radius/ulna would include the: | c. c. elbow and carpus. |
| 114. You are radiographing a right feline craniocaudal humerus. The R marker is best placed: | c. c. along the medial aspect. |
| 115. Computerized radiography is similar to traditional radiography in that: | c. c. they both use cassettes of similar sizes. |
| 116. The imaging plate within the CR cassette: | a. a. must be processed immediately because the image will not last. |
| 117. Picture archiving and communications systems store the images: | a. a. locally on hard drives or via the Internet anywhere in the world. |
| 118. The normal radiographic views of the abdomen are generally the: | d. d. right lateral and ventrodorsal. |
| 119. Looking at the radiograph of an abdomen, you see that the pyloric antrum and body of the stomach are gas-filled and the axis of the stomach appears vertical. This view is likely a: | a. a. ventrodorsal. |
| 120. Why is a right lateral view suggested rather than a left lateral abdomen view? | c. c. The liver appears slightly smaller. |
| 121. The radiographic borders for a thoracic radiograph are the: | c. c. shoulder joint to the first lumbar vertebral body. |
| 122. Where should the radius and ulna, in the craniocaudal view, be measured? | b. b. distal humerus. |
| 123. A dog is exhibiting severe pain and trauma in the pelvic region. Which position would be best to complete using a vertical beam? | a. a. Lateral with the affected side up. |
| 124. The main principle of PennHIP is to: | d. d. quantitatively measure canine hip joint laxity. |
| 125. The ventrodorsal cervical vertebrae of a Cocker Spaniel are to be radiographed. It is best to measure and center at: | a. a. the level of C6 to ensure adequate penetration of the caudal cervical vertebrae. |
| 126. A lateral view of the thoracolumbar vertebrae is required. Where should the borders be? | a. a. xiphoid to the last rib |
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Beabea
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