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WorksheetsChapter 3 Wrap RADBIO
Total questions: 15
Worksheet time: 8mins
In photodisintegration interaction, the incident photon:
interacts with the outer shell electron of the atom
interacts with the innermost shell of atom
collides with nucleus of atom and releases a neutron
interacts with nucleus and produces a particle and negatron
Ionization of the atom occurs during process of coherent scattering.
true
false
Pair production occurs only at ______ or greater.
0.102 MeV
1.022 MeV
102.2 MeV
1022 MeV
Radiation photons emitted from the x-ray tube but not yet reached or penetrated the patient:
primary photons
exit radiation
image formation photons
scatter radiation
The traditional unit of Exposure (X) is:
Roentgen
C/kg
REM
rad
The unit that used to describe Absorbed Dose is ___________.
REM
Sv
Roentgen
gray
What instrument can be used to read Exposure (X)?
Amp meter
Coulomb counter
Standard, or free-air, ionization chamber
Ohmmeter
Which of the following is not a term for coherent scattering?
Characteristic
Classical
Elastic
Unmodified
Which of the following results in all-directional scatter?
Classical interaction
Coherent interaction
Compton interaction
Which of the following units of measure are not SI units?
1. Roentgens
2. Coulombs per kilogram, Grays, Sieverts
3. Rads and Rems
1 and 3
2 and 3
2 only
1 only
In photodisintegration interaction, the incident photon:
interacts with the outer shell electron of the atom
interacts with the innermost shell of atom
collides with nucleus of atom and releases a neutron
interacts with nucleus and produces a particle and negatron
The unit that used to describe Absorbed Dose is ___________.
REM
Sv
Roentgen
gray
A photoelectron usually is absorbed within a few micrometers of the medium through which it travels, thereby increasing patient dose and contributing to biologic damage in tissue.
T
F
Absorption properties of different body structures must be identical to make diagnostically useful images possible.
T
F
The intensity of radiation scatter in various directions is a major factor in the planning of protection for medical imaging personnel during a radiologic examination.
T
F
