Latest ARRT MIDTERM EXAM - |Question and Answer| 100% Correct

Latest ARRT MIDTERM EXAM - |Question and Answer| 100% Correct 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 *Ans* 2 and 3 More windings on the primary side of the transformer will create ____ voltage on the secondary side. *Ans* less In the construction of a radiographic grid, what defines the grid ratio? *Ans* height of lead strips compared to the distance between them What positioning technique could help enhance the quality of a lateral knee? *Ans* 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? *Ans* 0.004 Gy Genetic effects are those that manifest: *Ans* in future generations of the exposed individual General Fluoro is limited to maximum entrance skin exposure rate of: *Ans* 100 mGy/min How is the patient positioned for an external rotation of the shoulder? *Ans* abduct the patients arm T/F: Electrons and x-rays can be focused. *Ans* False Which device in an image receptor can collect and convert light into an electrical signal? *Ans* CCD, Photodiode if a patient begins to have symptoms of hives after an injection of contrast for an IVP, what should be done first? *Ans* call a radiologist What is the most common cause of an off-level grid error? *Ans* grid shifts due to patient movement The trachea bifurcates at the level of the _____. *Ans* 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: *Ans* camera tube lag