RTE 115 Imaging Principles Flashcards

discovered x-rays

November 8th, 1895

Wilhelm Roentgen's wife's hand

<p>Thomas Edison's assistant and the first to die from the radiation</p> Signup and view all the answers

<p>Shielding, Time, Distance (most important)</p> Signup and view all the answers

<p>x-ray tube</p> Signup and view all the answers

<p>mass, length, time</p> Signup and view all the answers

<p>velocity, acceleration, force, momentum, work, and power</p> Signup and view all the answers

<p>dose, dose equivalent, exposure, and radioactivity</p> Signup and view all the answers

<p>is a measure of the number of electrons liberated by ionization per kilogram of air (in air exposure)</p> Signup and view all the answers

<p>the unit for how much radiation is absorbed in a dose</p> Signup and view all the answers

<p>used to quantify occupational exposure or dose equivalent</p> Signup and view all the answers

<p>unit that measures radioactivity</p> Signup and view all the answers

<p>Mobile or permanently installed</p> Signup and view all the answers

<p>gives mobility to the x-ray tube</p> Signup and view all the answers

<p>designed to raise and lower, has a 4-way floating top with electromagnetic locks</p> Signup and view all the answers

<p>consists of a vertical rail assembly affixed to the wall and floor and a vertical Bucky assembly for upright exams</p> Signup and view all the answers

<p>used by the radiographer to select the Kilovoltage and milliamperage that's applied to the x-ray tube</p> Signup and view all the answers

<p>As Low As Reasonably Achievable</p> Signup and view all the answers

<p>American Society of Radiologic Technologists</p> Signup and view all the answers

<p>American Registry of Radiologic Technologists</p> Signup and view all the answers

<p>Code of ethics, rules of ethics</p> Signup and view all the answers

<p>limiting the field of x-ray exposure, controlling the x-ray beam's kilovoltage, avoiding unnecessary duplication of exams, screening for pregnancy</p> Signup and view all the answers

<p>automatic exposure control</p> Signup and view all the answers

<p>source image distance</p> Signup and view all the answers

<p>optimization for radiation protection</p> Signup and view all the answers

<p>even out uneven anatomy on the foot</p> Signup and view all the answers

<p>beam attenuates differently depending on different anatomy</p> Signup and view all the answers

<p>lined with lead to prevent leakage radiation</p> Signup and view all the answers

<p>no more than 100 mRph at distance 1 mph</p> Signup and view all the answers

<ul> <li>A rotating tungsten-coated molybdenum disc mounted on a copper shaft with a molybdenum core - Advantage: it spreads heat over a larger surface area</li> </ul> Signup and view all the answers

<p>A nonmoving anode, usually found in dental and small portable radiography units</p> Signup and view all the answers

<p>The angle causes the intensity of the x-ray beam to be less on the anode side</p> Signup and view all the answers

<p>2 filaments within 1 focus cup</p> Signup and view all the answers

<p>higher x-ray absorption</p> Signup and view all the answers

<p>Time, Distance, Shielding (Distance is most important)</p> Signup and view all the answers

<p>relationship between distance and intensity of the beam</p> Signup and view all the answers

<p>high density, thicker anatomic part</p> Signup and view all the answers

<p>X-ray has the ability to remove electrons from atoms</p> Signup and view all the answers

<p>wanted to alter the quality of the beam</p> Signup and view all the answers

<p>higher contrast</p> Signup and view all the answers

<p>lower the contrast</p> Signup and view all the answers

<p>has many black and white with very few shades of gray</p> Signup and view all the answers

<p>differences in adjacent densities</p> Signup and view all the answers

<p>Mass</p> Signup and view all the answers

<p>Mass</p> Signup and view all the answers

<p>keep the electrons together so they can accelerate toward the anode</p> Signup and view all the answers

<p>Nickel</p> Signup and view all the answers

<p>invisible image</p> Signup and view all the answers

<p>developed image</p> Signup and view all the answers

<p>incident electron bends around nucleus and loses energy, creating x-ray photon</p> Signup and view all the answers

<p>heat is given off</p> Signup and view all the answers

<p>inherent, added filtration 2.5mm aluminum equivalent</p> Signup and view all the answers

<p>filtration within the x-ray tube between target window and collimator</p> Signup and view all the answers

<p>filtration outside of the tube between target window and collimator</p> Signup and view all the answers

<p>provides the source of electrons needed for x-ray production</p> Signup and view all the answers

<p>filaments and the focusing cup</p> Signup and view all the answers

<p>Cathode</p> Signup and view all the answers

<p>By angling the face of the anode target, a large actual focal spot size can be maintained and a small effective focal spot size can be created</p> Signup and view all the answers

<p>within focusing cups on the cathode side</p> Signup and view all the answers

<p>tungsten with 1-2% thorium added</p> Signup and view all the answers

<p>high dissipation of heat rate, high melting point, and high atomic number</p> Signup and view all the answers

<p>74</p> Signup and view all the answers

<p>reduces the release of low energy photons, made of aluminum</p> Signup and view all the answers

<p>lowers patients' skin dose</p> Signup and view all the answers

<p>reduction of intensity of beam while passing through matter from absorption or scatter</p> Signup and view all the answers

<p>created at anode target track, or actual focal spot</p> Signup and view all the answers

<p>First beam that exits the tube</p> Signup and view all the answers

<p>higher energy, produces more compton scatter</p> Signup and view all the answers

<p>dangerous for techs, degrades the image quality</p> Signup and view all the answers

<p>reduce the amount of low energy photons and increases contrast</p> Signup and view all the answers

<p>radiation scattered or created as a result of the attenuation of the primary x-ray beam by matter</p> Signup and view all the answers

<p>higher intensity (4X greater)</p> Signup and view all the answers

<p>less intensity (4X less)</p> Signup and view all the answers

<p>primary controlling factor of quantity (# of photons)</p> Signup and view all the answers

<p>primary controlling factor of quality (Kilovoltage)</p> Signup and view all the answers

<p>higher energy and quality beam and higher KVP</p> Signup and view all the answers

<p>less energy and quality</p> Signup and view all the answers

<p>American healthcare radiology administrators</p> Signup and view all the answers

<p>American Society of Radiologic Technologists</p> Signup and view all the answers

<p>American Registry of Radiologic Technologists</p> Signup and view all the answers

<p>interacts with K shells in an atom and total absorption occurs</p> Signup and view all the answers

<p>mAs</p> Signup and view all the answers

<p>mass, length, time</p> Signup and view all the answers

<p>dose, dose equivalent, exposure, and radioactivity</p> Signup and view all the answers

<p>velocity, acceleration, force, momentum, work, and power</p> Signup and view all the answers