Physics Chapter 10

20問 • 1年前

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通報

問題一覧

The two primary forms of x-ray interaction in the diagnostic range are ___________.

Compton scattering and photoelectric absorption

An incident x-ray interacts with a atom without ionization during _________.

coherent scattering

An outer-shell electron is ejected and the atom is ionized during _________.

Compton interactions

Which x-ray interaction involves the ejection of the K-shell electron?

Photoelectic absorption

The scattered x-ray from a Compton interaction usually retains ______ of the energy of the incident photon.

most

Compton scatter is directed at _____ angle from the incident beam.

any

As kVp _________, the probability of photoelectric absorption __________.

increases; decreases

In ___________, there is complete absorption of the incident x-ray photon.

photoelectric interaction

_________ occurs only at the very high energies used in radiation therapy and in nuclear medicine P.E.T imaging.

Pair production

Only at energies above 10 MeV can ________ take place.

photodisintegration

When the mass of the absorber is ________, it results in _________ Compton scatter.

increased; increased

K-shoe binding energy increases with increasing ____________.

atomic number

Which has the greatest mass density?

Bone

Differential absorption is diagnostic imaging is primarily caused by __________.

pair production

Because of differential absorption, about _____ % of the incident beam from the x-ray tube contributes to the finished image.

1.0

Differential absorption is dependent on all of the following, expect __________.

mAs of the exposure

Attenuation is caused by ___________.

absorption and scattering

Barium is a good contrast agent because of its __________

high atomic number

The use of contrast agents increases the amount of ___________.

photoelectric absorption, Compton scatter and photoelectric absorption

A negative contrast agent is _________.

air

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問題一覧

The two primary forms of x-ray interaction in the diagnostic range are ___________.

Compton scattering and photoelectric absorption

An incident x-ray interacts with a atom without ionization during _________.

coherent scattering

An outer-shell electron is ejected and the atom is ionized during _________.

Compton interactions

Which x-ray interaction involves the ejection of the K-shell electron?

Photoelectic absorption

The scattered x-ray from a Compton interaction usually retains ______ of the energy of the incident photon.

most

Compton scatter is directed at _____ angle from the incident beam.

any

As kVp _________, the probability of photoelectric absorption __________.

increases; decreases

In ___________, there is complete absorption of the incident x-ray photon.

photoelectric interaction

_________ occurs only at the very high energies used in radiation therapy and in nuclear medicine P.E.T imaging.

Pair production

Only at energies above 10 MeV can ________ take place.

photodisintegration

When the mass of the absorber is ________, it results in _________ Compton scatter.

increased; increased

K-shoe binding energy increases with increasing ____________.

atomic number

Which has the greatest mass density?

Bone

Differential absorption is diagnostic imaging is primarily caused by __________.

pair production

Because of differential absorption, about _____ % of the incident beam from the x-ray tube contributes to the finished image.

1.0

Differential absorption is dependent on all of the following, expect __________.

mAs of the exposure

Attenuation is caused by ___________.

absorption and scattering

Barium is a good contrast agent because of its __________

high atomic number

The use of contrast agents increases the amount of ___________.

photoelectric absorption, Compton scatter and photoelectric absorption

A negative contrast agent is _________.

air