ARRT Mock Exam Practice Questions and Answers

M/C: Which of the following are true for an AP coccyx projection? 1. 15 degree cephalic angle. 2. 10 degree caudal angle 3. center 2 inches superior to the pubic symphysis 2 and 3 More windings on the primary side of the transformer will create ____ voltage on the secondary side. less In the construction of a radiographic grid, what defines the grid ratio? height of lead strips compared to the distance between them What positioning technique could help enhance the quality of a lateral knee? CR with a 5 degree cephalic angle During a fluoro exposure, a patient's stomach absorbs a total of 0.012 joules of energy. The tissues of the stomach weigh 3 kilograms. What is the absorbed dose? 0.004 Gy Genetic effects are those that manifest: in future generations of the exposed individual General Fluoro is limited to maximum entrance skin exposure rate of: 100 mGy/min How is the patient positioned for an external rotation of the shoulder? abduct the patients arm T/F: Electrons and x-rays can be focused. False Which device in an image receptor can collect and convert light into an electrical signal? CCD, Photodiode if a patient begins to have symptoms of hives after an injection of contrast for an IVP, what should be done first? call a radiologist What is the most common cause of an off-level grid error? grid shifts due to patient movement The trachea bifurcates at the level of the _____. Aortic notch If the x-ray tube is moved rapidly during a fluoro exam, the image will blur. This is the result of the following: camera tube lag during an x-ray exposure, electrons accelerate towards what part of the x-ray tube? Anode What is the radiation weighting factor of x-rays? 1 M/C: The use of proper collimation serves to: 1. Increase image contrast 2. reduce radiation exposure to the patient 3. decrease effective focal-spot size 1 and 2 Inherent filtration refers to: filtration that is part of tube design What effect will decreasing collimation have on patient radiation exposure increases patient radiation exposure The severity of the hell effect can be increased by what change in SID? decreasing sid M/C: Federal Law on radiation protection requires which of the following? 1. signage for radiation areas 2. maintaining personal dose records 3. publication of personal dose records 1 and 2 What is the largest carpal bone? capitate T/F: the esophagus lies anterior to the trachea? False To function correctly, the current entering a transformer must be: AC A middle-aged male with a blood pressure reading 180/80 mmHg would be diagnosed as hypertensive PICC lines are used to: Deliver medication through a vein M/C: Which of the following facts are true regarding x-rays? 1. x-rays have no mass 2. x-rays travel at the speed of light