Font size
Worksheetsrad 235 ch 3 quizizz
Total questions: 21
Worksheet time: 11mins
What does kVp primarily control in an X-ray beam?
Quantity of photons
Penetrating power
Exposure time
Electron tube current
What does mAs control in an X-ray exposure?
Beam quality
Quantity of radiation
Photon energy
Target interaction
What is the term for X-rays that pass through a patient without interacting?
Scattered radiation
Absorbed radiation
Direct transmission
Secondary radiation
Which of the following interactions is responsible for the majority of scatter radiation in diagnostic radiology?
Photoelectric absorption
Compton scattering
Coherent scattering
Pair production
What is the absorbed dose (D) a measure of?
The number of X-ray photons in a beam
The amount of scatter radiation produced
The amount of energy transferred to the patient’s tissue
The number of photons absorbed in the X-ray tube
What is the most important interaction for creating useful diagnostic images?
Compton scattering
Photoelectric absorption
Coherent scattering
Pair production
Which interaction occurs when an X-ray photon interacts with an inner-shell electron, transferring all its energy?
Compton scattering
Photoelectric absorption
Coherent scattering
Pair production
What material is commonly used for the target (anode) in an X-ray tube?
Lead
Tungsten
Aluminum
Copper
What is the purpose of filtration in an X-ray beam?
Increase patient dose
Reduce beam energy
Remove low-energy photons
Increase photon scatter
Which interaction occurs with low-energy photons (<10 keV) and causes no ionization?
Coherent scattering
Compton scattering
Photoelectric absorption
Pair production
The probability of photoelectric absorption increases when which factor increases?
Photon energy
Electron binding energy
Atomic number (Z) of the material
Thickness of soft tissue
What happens in Compton scattering?
The photon is completely absorbed
The photon passes through without interaction
The photon transfers part of its energy to an outer-shell electron
The photon produces two annihilation photons
Which interaction is responsible for occupational radiation exposure to radiographers?
Photoelectric absorption
Compton scattering
Pair production requires a photon energy of at least:
150 keV
500 keV
800 keV
1.022 MeV
What is the result of pair production?
The release of a characteristic photon
The creation of an Auger electron
The production of a positron and an electron
A scattered photon with lower energy
Which interaction plays no role in diagnostic radiology?
Compton scattering
Photoelectric absorption
Photodisintegration
Direct transmission
What does collimation help reduce?
Primary radiation
Image contrast
Scatter radiation
Photon energy
How does contrast media enhance radiographic images?
By increasing the difference in photoelectric absorption
By decreasing atomic number differences
By increasing Compton scattering
By eliminating attenuation differences
What happens when an X-ray photon interacts with a nucleus in photodisintegration?
A photoelectron is ejected
The photon is scattered
A neutron or other particle is emitted
A characteristic photon is released
What factor primarily determines radiographic contrast?
Scatter radiation
Photoelectric absorption differences
Which of the following factors does not affect the quality of an X-ray beam?
A) Tube voltage
B) Filtration
C) Photon wavelength
D) Tube current
