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Physics Nearpod

QuestionAnswer
What type of radiation is x-ray? Electromagnetic radiation.
Which type of radiation is produced by the interaction of an incident electron with the nucleus of a target atom? Bremsstrahlung
What determines the maximum energy level of a photon of characteristic radiation? The binding energy of the electron shell.
What two types of ionization are predominant within the energy range of diagnostic radiography? Photoelectric effect and Compton effect
What three end products always result from a photoelectric effect interaction? A positive ion, a negative ion, and characteristic radiation.
The statement “like charges repel, unlike charges attract” represents which law of nature? The law of electrostatics
A current carrying conductor that has been looped into many coils to enhance the strength of its magnetic field is called a solenoid.
What are the two types of electromagnetic induction? Self induction and mutual induction.
What is the positively charged electrode of an x-ray tube? Anode.
Which half-value layer indicates the beam with the highest quality? (Take the question on face value. Therefore, if its not in the question don't add it!!!!) 4 mm lead.
Which factors controls beam quality? filtration and kVp
What is the relationship between mAs and receptor exposure? mAs is directly proportional to receptor exposure.
Secondary photons are considered as New Photons? True
An increase in the tube current (mA) will result in an increase in the quantity of x-ray photons produced.
The use of higher kVp values will result in the production of photons with __________ wavelengths. shorter
____________________________ radiation is produced when a high speed electron removes an orbital electron of the target atom and another electron fills the vacancy. Characteristic
The free electrons around the filament form a "space charge." True
An x-ray beam transferring some of its energy to matter through which it is passing best describes attenuation.
The transfer of all energy from an x-ray photon to the medium through which it is passing is best described as absorption. True
After an ionizing interaction removes an electron, the atom will have an overall positive charge. True
Photoelectric interaction results in ____________ of the photon energy being transferred to the orbital electron. all
The photoelectric effect is most common in what kVp ranges? Low (10-70 kVp)
Compton effect is most common in what kVp ranges? moderate (70 kVp and above)
Which one of the following is a factor necessary for the production of X-radiation? A source of free electrons
Most x-ray tubes are equipped with two filaments
Which statement best describes the energy state of a photon that interacts by way of the photoelectric effect? Total energy loss
Which statement best describes the energy state of a photon that interacts by way of the Compton effect? Partial transfer of energy from photon to orbital electron
Which of the four interactions is classified as true absorption? Photoelectric effect
An incident photon that changes direction after interacting with an atom is known as "photo-electric effect" False
Compton scatter and photoelectric effect can both cause secondary ionizations. True
Excessive anode heating can cause vaporized tungsten to be deposited on the port window. This can result in 1. decreased tube output. 2. tube failure. 3. electrical arcing.
After a photon has under gone comptom scatter, how much energy will the photon retain? 2/3
For which of the following examinations can the anode heel effect be an important consideration? Lateral thoracic spine AP femur Right anterior oblique (RAO) sternum 1 and 2 only
Which two interactions can create a cascading or domino effect to release photons? 1. PE 2. Compton 3. Characteristic 4. Bremsstrulung 1 and 3
Created by: DeAndreMitchell
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