NEW
Font size
WorksheetsRadiology Quiz
Total questions: 25
Worksheet time: 25mins
The intensity of radiation reduces as it passes through the patients body because of
reflection
transmission
attenuation
resistance
The cathode is
a positively charged electrode.
a metal target that is bombarded with high-speed electrons.
a filament that emits electrons when heated.
a rotating disc made of a high melting point metal.
The binding energy of K and L shell of an atom is 24 keV and 4 keV respectively. How much energy of X-ray produced when an electron from L shell falls to the K shell?
28 keV
6 keV
20 eV
20 keV
How to increase the X-ray attenuation?
Use thicker and low Z material.
Use low X-ray energy on high Z material.
Use low X-ray energy on thin material.
Use high X-ray energy on low Z material.
The following are the advantages of DR cassette except
Better image quality
Lower risk of overexposure
Portable
Fast processing
What causes the X-ray filament to heat up once the current pass through it?
The filament resistance.
The electron flow.
The atom vibration.
The voltage increment.
Bremsstrahlung X-ray is produced when
high energy particles collide with inner shell electrons.
an electron from outer shell fall into lower shell.
energetic electrons lose energy and deflected.
a target is exposed to light.
Which of the following components reduces the scattering radiation that reach the X-ray detector?
Bucky
Collimator
Grid
Aluminium support
Why the DR cassette does not require a processor?
Because it is cheap.
Because it does not have silver ions.
Because the image data is transferred directly to the computer.
Because the image is already visible without processing.
The image here have an obvious artifact. What causes this image artifact?
X-ray intensity too low
X-ray intensity too high
Patient has metal implant.
Patient moved during the scan,
The X-ray anode need to have the following characteristics, except
High melting point.
High atomic number.
High atomic mass.
High heat dissipation ability.
Which of the following is a component of an X-ray tube?
X-ray table
Collimator
Glass envelop
Bucky
Which of the following statements is correct about the Image A and Image B here?
Image B requires less radiation to produce.
The is loss of information in Image A
Image B has higher resolution
There is a motion blur in Image A
What will happen if the X-ray tube stator or rotor is broken?
The cathode will rotate slower
The glass envelop will break
The anode will melt
The filament will overheat
How can an X-ray anode withstand very high tube voltage?
The anode material has high electron energy.
The anode material has high melting point
The anode material can withstand high electric current
The anode material is made up of lead
Why the brushless rotor need to used instead of the traditional brush rotor to rotate the X-ray anode?
To reduce heat production
To withstand high voltage
To maintain the vacuum condition of the tube
To have smoother rotation
DR is much better than X-ray film because it is
cheaper
more efficient
portable
sanitary
Which of the following individual is the most sensitive to radiation?
Fetus
Children
Adolescent
Adult
The X-ray penetration power can be increased by
increasing the filament current
decreasing the filament current
decreasing the tube voltage
increasing the tube voltage
X-rays can be produced through the interaction of high-energy electrons with the following particles, except
outer shell electrons
inner shell electrons
proton
neutron
Electrons in the X-ray tube are emitted by the
Anode target
Cathode filament
Focusing cup
X-ray circuit
Which of the following equipment produces non-ionizing radiation?
CT scan
General X-ray
MRI
Fluoroscopy
How to reduce unnecessary X-ray exposure?
Shield the scan area
Reduce the distance from the radiation source
Prolong the exposure time
Shield behind a thick wall
Why we need to rotate the anode during X-ray production?
To avoid the overheating of the filament
To increase the X-ray energy
To increase the speed of the electrons
To distribute the heat evenly on the anode
What will happen to the X-ray image if there are too many scattered radiation detected?
Image will be noisy
Image will be blurry
Image will have artifact
Image will have low contrast
