Quiz
Radiography 3
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Questions in this quiz (34)
1Atomic mass is the number of...
- AProtons
- BNeutrons
- CElectrons
2Atomic number is only concerned with protons
- ATrue
- BFalse
3Electrons in which shell have the greatest binding energy?
- AK
- BL
- CM
- DN
4If you increase atomic number, you...
- AIncrease binding energy
- BDecrease atomic mass
- CChange the number of electrons
5Which of these are particulate radiation?
- AAlpha rays
- BBeta rays
- CX-rays
- DGamma rays
- ECosmic rays
6Alpha rays are more damaging than beta rays.
- ATrue
- BFalse
7Capacity of particulate radiation to ionise depends on...
- AMass
- BVelocity
- CCharge
- DForce
8Wave theory states that...
- AWavelength x Frequency = speed of light
- BEnergy = plancks constant x speed of light / wavelength
9Quantum theory states that...
- AEnergy = Speed of light x Plancks constant / Wavelength
- BWavelength x Frequency = Speed of light
10X-rays are [blank_start]high[blank_end] energy electromagnetic radiation produced by interactions of [blank_start]electrons[blank_end] with an atomic nucleus.
- Ahigh
- Belectrons
11X-rays travel at the speed of light.
- ATrue
- BFalse
12X-rays produce ionisation.
- ATrue
- BFalse
13Most natural background radiation is from...
- ARadon exposure
- BFood
- CCosmic radiation
- DMedical exposure
14Absorption of X-rays occurs by the...
- APhotoelectric effect
- BCompton effect
15Absorption is proportional to the cube of the...
- AAtomic number
- BAtomic mass
- CX-ray energy
16As well as contributing to the image, absorption gives rise to radiation dose.
- ATrue
- BFalse
17Absorption is inversely proportional to the
- ACube of the X-ray energy
- BAtomic number
- CAtomic mass
18X-ray scatter produces
- AA compton recoil electron
- BA photoelectron
- CA weakened, deflected X-ray photon
- DA full energy X-ray photon
19Coherent scatter tends to occur with...
- ALow energy X-ray photons
- BHigh energy X-ray photons
20Absorption makes up the majority of X-ray interactions and 30-40% of this leads to operator dose.
- ATrue
- BFalse
21Absorbed dose is measured in...
- AmilliGrays
- BMicrosiverts
- CArbitrary units
22Equivalent dose =
- ARadiation weighting factor x Absorbed dose
- BTissue weighting factor x Absorbed dose x Radiation weighting factor
- CAbsorbed dose x Exposure
- DTissue weighting factor x Radiation weighting factor
23Effective dose =
- AAbsorbed dose x Tissue weighting factor x Radiation weighting factor
- BAbsorbed dose x Radiation weighting factor
- CAbsorbed dose x Tissue weighting factor
24Effective dose is measured in...
- AMilligrays
- BMicrosieverts
- CArbitrary units
25One OPG is roughly equivalent to..
- A16 hours of natural background radiation
- B3 days of natural background radiation
- CA week of natural background radiation
26Which type of dental radiography carries the highest risk of fatal cancer?
- ACT scan of the Maxilla
- BLateral cephalogram
- COPG
- DBitewing radiograph
27New annual occupational dose limits say that non-classified workers such as dentists may be exposed up to...
- A6 mSv
- B20 mSv
- C15 mSv
- D5 mSv
28Old annual occupational dose limits say that non-classified workers such as dentists could be exposed up to...
- A15 mSv
- B6 mSv
- C20 mSv
- D1 mSv
29According to radiation legislation, dentists are classed as...
- AGeneral public
- BNon-classified workers
- CClassified workers
30Effective dose considers the radiosensitivity of body organs as well as the type of radiation the patient is exposed to.
- ATrue
- BFalse
31Equivalent dose considers the radiosensitivity of body organs as well as the type of radiation the patient is exposed to.
- ATrue
- BFalse
32Effective dose = Absorbed dose x Radiation weighting factor
- ATrue
- BFalse
33Equivalent dose = Absorbed dose x Radiation weighting factor
- ATrue
- BFalse
34Absorbed dose is...
- AThe amount of energy absorbed from the X-ray beam
- BThe ability of radiation to ionise air
- CThe amount of energy absorbed from the X-ray beam as well as considering the type of radiation involved
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- Radiography quiz on Radiation physics lecture
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- 0 9
- Language
- English
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