Welcome to the Quiz!
This quiz contains 15 questions from a mix of 1 subtopics.
What is the primary component of an X-ray tube that emits a focused beam of electrons?
filament
tungsten target
cathode
anode
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What material is often used as the target metal in the anode of an X-ray tube?
aluminum
silver
tungsten
copper
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What happens to the electrons when they strike the tungsten anode in an X-ray tube?
they are absorbed by the tungsten atoms
they are decelerated, converting their kinetic energy into X-ray photons
they pass through the anode unaffected
they are reflected back towards the cathode
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If the accelerating potential in an X-ray tube is doubled, what happens to the wavelength of the emitted X-rays?
the wavelength is doubled
the wavelength is quadrupled
the wavelength remains the same
the wavelength is halved
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What are the two main processes responsible for the attenuation of X-rays as they pass through matter?
diffraction and interference
absorption and scattering
polarization and dispersion
reflection and refraction
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What does CAT stand for in the context of medical imaging?
computerised Axial Tomography
computerised Atomic Tomography
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What is the purpose of using a rotating X-ray beam and detectors in a CAT scan?
to capture images of body slices
to reduce the radiation exposure to the patient
to shorten the scanning time
to improve the resolution of the images
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What is the term for the reduction in X-ray intensity as they pass through matter?
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What is the term for the electromagnetic radiation produced when high-energy electrons strike the tungsten anode in an X-ray tube?
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What is the term for the detailed cross-sectional views of soft tissues produced by a CAT scan?
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Describe the two main processes that lead to the generation of X-rays when high-energy electrons bombard the tungsten anode in an X-ray tube.
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Explain how the intensity of the X-ray beam can be increased in an X-ray tube.
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Describe how CAT scans use X-rays to produce detailed images of internal body structures.
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An X-ray tube with an accelerating potential of 150 kV is used to produce X-rays. Calculate the maximum energy of these X-rays.
1.6 x 10-15 J
2.4 x 10-14 J
1.6 x 10-14 J
2.4 x 10-16 J
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Calculate the new intensity of an X-ray beam after passing through 2 cm of a material, if the initial intensity was 500 W m-2 and the attenuation coefficient of the material is 0.1 cm-1.
818.7 W m-2
367.9 W m-2
409.4 W m-2
406.6 W m-2
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