RAD Midterm 1 TCDHA questions answers 2023/2024

RAD Midterm 1 TCDHA A form of energy carried by waves or streams of particles is defined as... - correct answer Radiation The x-ray was discovered by... - correct answer Wilhelm Roentgen Who MODIFIED the paralleling technique with the introduction of the long-cone technique? - correct answer F. Gordon Fitzgerald Which of the following would you place in the patient's mouth in order to take dental x-rays? a) Image b) Image Receptor c) Radiograph d) Dental radiograph - correct answer b. Image Receptor Which subatomic particle carries a negative electrical charge? a) A Neutron b) A Proton c) An Electron d) A Nucleon - correct answer c. An Electron What is the binding energy or binding force of an electron is... - correct answer Determined by the distance between the orbiting electrons and the nucleus A spontaneous emission of radiation from the disintegration of unstable atomic nuclei is... - correct answer Radioactivity Cathode rays are derived from which of the following types of particulate radiation? a. Electrons b. Alpha Particles c. Protons d. alpha particle decay - correct answer a. Electrons What type of radiation includes x-rays and visible light? - correct answer Electromagnetic Approximately what percentage of the kinetic energy of the electrons is converted to x-rays at the anode? - correct answer Less than 1% What restricts the size of the x-ray beam? - correct answer The Lead Collimator Which form of the x-ray beam is more detrimental to the patient and operator? - correct answer Scatter Radiation What happens with the electrons when the kilovoltage is increased? - correct answer The electrons moves from the CATHODE to the ANODE with more speed Higher-energy x-ray beam with increased penetrating ability results by... - correct answer When the kilovolt is increased (1) Density is the overall darkness or blackness of a dental image. (2) When the kilovoltage is increased while other exposure factors remain constant, the resultant image exhibits a decreased density and appears lighter. a. Both statement are true b. Both statement are false c. The first statement is true; the second statement is false - correct answer c. The first statement is true; the second statement is false What controls the quantity of x-rays produced? - correct answer Milliamperage (mA) In regard to increasing density: - correct answer An increase in either kVp or mA will increase density.