ARRT MOCK EXAM WITH CORRECT ANSWERS, Exams of Radiography

Download ARRT MOCK EXAM WITH CORRECT ANSWERS and more Exams Radiography in PDF only on Docsity! ARRT MOCK EXAM  WITH CORRECT ANSWERS M/C: Which of the following are true for an AP coccyx projection? 1. 15 degree cephalic angle. 2. 10 degree caudal angle3. center 2 inches superior to the pubic symphysis - ANSWERS✔✔ 2 and 3 More windings on the primary side of the transformer will create ____ voltage on the secondary side. - ANSWERS✔✔ less In the construction of a radiographic grid, what defines the grid ratio? - ANSWERS✔✔ height of lead strips compared to the distance between them What positioning technique could help enhance the quality of a lateral knee? - ANSWERS✔✔ CR with a 5 degree cephalic angle During a fluoro exposure, a patient's stomach absorbs a total of 0.012 joulesof energy. The tissues of the stomach weigh 3 kilograms. What is the absorbed dose? - ANSWERS✔✔ 0.004 Gy Genetic effects are those that manifest: - ANSWERS✔✔ in future generations of the exposed individual General Fluoro is limited to maximum entrance skin exposure rate of: - ANSWERS✔✔ 100 mGy/min How is the patient positioned for an external rotation of the shoulder? - ANSWERS✔✔ abduct the patients arm T/F: Electrons and x-rays can be focused. - ANSWERS✔✔ False Which device in an image receptor can collect and convert light into an electrical signal? - ANSWERS✔✔ CCD, Photodiode if a patient begins to have symptoms of hives after an injection of contrast for an IVP, what should be done first? - ANSWERS✔✔ call a radiologist What is the most common cause of an off-level grid error? - ANSWERS✔✔ grid shifts due to patient movement The trachea bifurcates at the level of the _____. - ANSWERS✔✔ 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: - ANSWERS✔✔ camera tube lag during an x-ray exposure, electrons accelerate towards what part of the x-ray tube? - ANSWERS✔✔ Anode What is the radiation weighting factor of x-rays? - ANSWERS✔✔ 1 M/C: The use of proper collimation serves to: 1. Increase image contrast2. reduce radiation exposure to the patient3. decrease effective focal-spot size - ANSWERS✔✔ 1 and 2 1. Higher exposure on the anode side of the image2. Higher exposure on the cathode side of the image3. Increased detail on the anode side of the image4. increased detail on the cathode side of the image - ANSWERS✔✔ 2 and 3 Penumbra and detail share what relationship? - ANSWERS✔✔ increased penumbra = decreased detail When using AEC, which of the following may result in an image with excessive receptor exposure? - ANSWERS✔✔ incorrect photo-timer cell selection M/C: What portion of the CR imaging plate protects the plate from unwanted light and background radiation? choose two. A. protective layerB. phosphor layerC. conductive layerD. light shield layer - ANSWERS✔✔ c and d How does the presence of oxygen affect the radiosensitivity of a cell - ANSWERS✔✔ increased radiosensitivity What is the normal pulse rate for an adult? - ANSWERS✔✔ 60-100 beats perminute Equivalent dose is a measurement that takes into consideration which of thefollowing variables? 1. radiation type 2. tissue type3. exposure rate - ANSWERS✔✔ 1 Within the oblique lumbar spine, the nose of the scotty dog is: - ANSWERS✔✔ Transverse process What is demonstrated in profile in the medial rotation view of the elbow? - ANSWERS✔✔ coronoid process A decrease in oxygen content is called? - ANSWERS✔✔ Hypoxia The wrist should be turned laterally ____ degrees when performing an oblique view - ANSWERS✔✔ 45 Acute infection of the parenchyma is characterized as: - ANSWERS✔✔ pneumonia On an AP Pelvis, if the lesser trochanters are partially visible, this indicates:- ANSWERS✔✔ the feet are in anatomic position The waters view best demonstrates: 1. Frontal sinus2. maxillary sinus3. ethmoid sinus4. sphenoid sinus - ANSWERS✔✔ 2 What determines the quantity of electrons in tube current? - ANSWERS✔✔ Heating of the filament An avulsion fracture is characterized as: - ANSWERS✔✔ Fracture where a tendon or ligament pulls off a piece of bone The light signal released by photo-stimulable phosphors is too weak to produce a quality radiograph. The light is enhanced by a device called? - ANSWERS✔✔ PMT (Photomultiplier tube) A patient suffering from a gunshot wound to the abdomen would most likelysuffer from this type of shock: - ANSWERS✔✔ Hypovolemic shock proper positioning of the PA axial caldwell projection includes: - ANSWERS✔✔ OML perpendicular to the IR with a 15 degree caudad angle A "coherent scattering" event may also be called - ANSWERS✔✔ classical scattering Dynamic range is defined as: - ANSWERS✔✔ The range of exposures that can be captured by a detector M/C: Personal monitoring devices are worn for what reasons: 1. check radiation safety practice2. monitor dose in the air3. estimate eye and thyroid dose - ANSWERS✔✔ 1 and 3 The smallest exposure difference that can be detected and displayed by the imaging system is called? - ANSWERS✔✔ contrast resolution