Wilhelm Conrad Roentgen - 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) - Founded in Chicago in 1920
Oldest and largest professional radiologic science organization
American Registry of Radiologic Technologists (ARRT) - Founded in 1922
Establishes standards and exams necessary to certify radiologic technologists
Joint Review Committee on Education in Radiologic Technology - Founded in 1969
Organization that conducts the accreditation of schools of radiologic technology
Dartmouth College - First clinical radiograph taken in 1896 at
Bucky - A device that contains a moving grid.
Matter - Anything that occupies space and has shape or form
Mass - Quantity of matter that makes up any physical object
Niels Bohr - Created the Bohr's atom in 1913
Atoms - "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 - Substance made up of only one type of atom
Atomic Number - All atoms in the same element share atomic number
Molecule - Two or more atoms combining chemically forms a molecule
Chemical Compound - Substance that consists of only one type of molecule
Ion - A neutral atom that gains or loses an electron
Ionization - Produces an atom with a positive or negative charge
, Energy - The ability to do work
Mechanical Energy - Includes:
Kinetic energy (energy of motion)
Potential energy (stored energy)
Chemical Energy - Released through chemical changes in atoms or molecules
Thermal Energy - Energy produced through heat
Nuclear Energy - Released by radionuclides
Electric Energy - The ability of electric charges to do work
Electromagnetic Energy - 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 - Distance from one crest to the next
Frequency - Number of times per second that a crest passes a given pount
Resistance - Any property of the circuit that opposes or hinders the flow of current
Current - Quantity of electrons following in a circuit
Ampere (A) - Unit used to measure the rate, or volume, of a current flow in the circuit
Potential Difference - Force or speed of the electron flow in the current
Volt (V) - Unit used to measure potential difference
Kilovolt Peak (kVp) - Equal to 1000 volts
Measure the voltage across an X-ray tube
Milliampere (mA) - 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 - Alternating current can be converted so that it flows in one direction only
Electromagnetic Induction - Moving a magnet in relation to a conductor
Transformer - The device used to produce the high voltage needed for X-ray production
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