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Dental Radiology Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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Dental Radiology Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
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Dental Radiology Exam | Questions And Answers Latest {2024- 2025} A+ Graded | 100%Verified
Discovered x-ray in 1895 - Wilhelm Roentgen
Production of ions - Ionization
Atom that gains or loses electron and becomes electrically unbalanced - Ion
When electron is removed from
An atom in ionization process - Ion pair results
Ion pair - 1. Atom becomes positive ion
2. Ejected electron becomes negative ion
Radiation that is capable of producing ions by removing or adding an electron to an atom - Ionizing
radiation
X-rays produce? - Ionization
Tiny particles of matter that possess mass and travel in straight lines at high speeds - Particulate
radiation
Particulate radiation - 1. Electrons
2. Beta particles
3. Cathode rays
4. Alpha particles
5. Neutrons
6. Protons
,Propagation of wave-like energy (without mass, without particles) through space or matter -
Electromagnetic radiation
Electromagnetic radiation - 1. Cosmic rays
2. X-rays
3. Microwaves, radio waves
4. Gamma rays
5. Ultraviolet rays
6. Visible light
Speed of wave - Velocity
Distance bt crest of one wave to crest of next wave - Wavelength
Number of wavelengths that pass a point in a certain amount of time - Frequency
Electromagnetic ionizing radiation of very short wavelength resulting from the bombardment of
tungsten by highly accelerated electrons in a vacuum - X-ray
X-Ray tube contains - 1. Protective leaded glass housing
2. Cathode
3. Anode
Protective leaded glass housing - 1. Tube enclosure with all air removed, shielding prevents radiation
leakage
2. High vacuum glass tube surrounded by refined oil with high insulating powers, oil helps to absorb
excess heat
Made of tungsten filament and molybdenum cup - Cathode
, Charge of cathode - Negative
Heated to give off cloud of electrons - Filament -thermionic emission
Focuses electrons toward the anode - Cup
Supplies electrons necessary to generate x-rays - Cathode
Made of a copper arm and focal spot - Anode
Charge of anode - Positive
Focal spot is made of - Tungsten target
Action of anode - Converts bombarding electrons into x-Ray photons
What happens when electrons strike tungsten target - Energy of motion is converted to x-Ray energy
and heat
How much of energy is lost as heat - 99%
Quality of C-Ray beam - kVp
Quality refers to - Penetrating power of beam
KVp regulates - Speed of electron traveling from cathode to anode
Higher kVp means - Faster electrons
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