LRA 211 Radiology Image Review latest update with verified solutions.docx, Exams of Biology

Download LRA 211 Radiology Image Review latest update with verified solutions.docx and more Exams Biology in PDF only on Docsity! LRA 211 Radiology Image Review latest update with verified solutions The earliest atomic theory based on an arrangement similar to the solar system is attributed to - answer Rutherford. The three fundamental particles of the atom are the - answer neutron, electron, and proton. The atomic nucleus contains - answer protons and neutrons. The component of the nucleus that has a positive charge and mass is the - answer proton. The electron shell closest to the nucleus is lettered - answer "K". Which of the following is not part of the electromagnetic spectrum? - answer Sound Which of the following electromagnetic radiations have the lowest energy level? - answer Radio waves As the wave's frequency increases, the wavelength - answer decreases Frequency is typically measured in - answer Hertz When a filament electron knocks out a K shell electron from the tungsten atom, it leads to - answer a characteristic x-ray photon. The energy of the characteristic x-ray photon depends on - answer 1.the binding energy of the inner-shell electron. 2.the energy level of the filament electron. 3.the shell of the electron that is dropping into the vacancy. A filament electron removes a K shell electron and an M shell electron fills the vacancy. The K shell binding energy is 69.5 keV and the M shell binding energy is 2.8 keV. What is the energy of the K- characteristic photon produced? - answer 66.7 keV Bremsstrahlung means - answer braking radiation. The energy of the brems photon depends on - answer 1.the original energy of the filament electron. 2.the strength of the attraction between the electron and the nucleus. 3.the energy of the filament electron as it leaves the tungsten atom. The majority of the x-ray photons produced are - answer brems photons. Which of the following is the primary factor controlling quantity? - answer mAs As the distance increases, the beam quantity reaching a specific area - answer decreases Classical interactions are also known as - answer Thomson and coherent scattering. Coherent scattering involves - answer an x- ray photon with low energy With Compton scattering, the incident photon - answer loses up to 1/3 of its energy. Secondary photons produced during a Photoelectric interaction - answer contribute to patient dose. When it does interact with the image receptor, the Compton scatter photon contributes no useful information because - answer it has changed direction. The fog seen on the radiographic image is the result of - answer Compton interactions. The primary source of radiation exposure to the radiographer who is in the room during an exposure is - answer from scatter from the patient. To minimize occupational exposure, the technologist should - answer wear protective apparel (lead aprons, gloves, etc.) when in the room during imaging. Photoelectric interactions - answer contribute significantly to patient dose.