GXMO EXAM 2024/25
Wilhelm Conrad Roentgen Answer- Lived 1845-1923 Discovered xrays on November 8, 1895 Discovered xrays at University of Würzburg (Germany) First xray was taken of Rowntgen's wife Anna Bertha's hand American Society of Radiologic Technologists (ASRT) Answer- Founded in Chicago in 1920 Oldest and largest professional radiologic science organization American Registry of Radiologic Technologists (ARRT) Answer- Founded in 1922 Establishes standards and exams necessary to certify radiologic technologists Joint Review Committee on Education in Radiologic Technology Answer- Founded in 1969 Organization that conducts the accreditation of schools of radiologic technology Limited X-ray Machine Operator (LXMO) Answer- Limited operators of X-ray equipment Dartmouth College Answer- First clinical radiograph taken in 1896 Bucky Answer- Invented by American radiologist, Gustav Bucky Device that contains a moving grid Matter Answer- Anything that occupies space and has shape or form Mass Answer- Quantity of matter that makes up any physical object Niels Bohr Answer- Created the Bohr's atom in 1913 Atoms Answer- "Building block" all matter is composed of Neutrons - no charge Protons - +1 charge Electrons - -1 charge Nucleus - formed by neutrons and protons to form the center of the atom Element Answer- Substance made up of only one type of atom Atomic Number Answer- All atoms in the same element share atomic number Molecule Answer- Two or more atoms combining chemically forms a molecule 1 / 2
Chemical Compound Answer- Substance that consists of only one type of molecule Ion Answer- A neutral atom that gains or loses an electron Ionization Answer- Produces an atom with a positive or negative charge Energy Answer- The ability to do work Mechanical Energy Answer- Kinetic energy (energy of motion) Potential energy (stored energy) Chemical Energy Answer- Released through chemical changes in atoms or molecules Thermal Energy Answer- Energy produced through heat Nuclear Energy Answer- Released by radionuclides Electric Energy Answer- The ability of electric charges to do work Electromagnetic Energy Answer- Used in radiology
Consists of: light, X-rays, radiowaves, microwaves
Sine wave - changes in the field that occur in the form of a repeating wave Wavelength Answer- Distance from one crest to the next Frequency Answer- Number of times per second that a crest passes a given pount Resistance Answer- Any property of the circuit that opposes or hinders the flow of current Current Answer- Quantity of electrons following in a circuit Ampere (A) Answer- Unit used to measure the rate, or volume, of a current flow in the circuit Potential Difference Answer- Force or speed of the electron flow in the current Volt (V) Answer- Unit used to measure potential difference Kilovolt Peak (kVp) Answer- Equal to 1000 volts Measure the voltage across an X-ray tube Milliampere (mA) Answer- Equal to 1/1000 of an ampere (0.001A) Measure the X-ray tube current Measure of the rate of current flow across the X-ray tube, that is the number of electrons flowing from filament to to target each second Rectification Answer- Alternating current can be converted so that it flows in one direction only
- / 2