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Bushong Rad Physics > X-ray Interaction With Matter Ch 10 > Flashcards

X-ray Interaction With Matter Ch 10 Flashcards

1
Q

Five Ways of X-ray Interaction With Matter

A

Coherent, Compton, Photoelectric Effect,

Pair Production & Photodisintegration

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2
Q

It interacts with whole atom

A

Low-Energy X-ray

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3
Q

It interacts with electrons

A

Moderate-Energy X-ray

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4
Q

It interacts with nuclei

A

High-Energy X-ray

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5
Q

The incident x-ray interacts with a target

atom, causing it to become excited

A

Coherent Scattering

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6
Q

The general graying of an image

A

Image Noise

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7
Q

The incident x-ray interacts with the outershell electron & ejects it from the atom

A

Compton Effect/Scattering

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8
Q

X-rays scattered back in the direction of the

incident x-ray beam

A

Backscatter Radiation

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9
Q

Compton scattering reduces…

A

image contrast

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10
Q

The incident x-ray interacts with the innershell electron

A

Photoelectric Effect

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11
Q

The photoelectric effect is

A

total x-ray absorption

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12
Q

The incident x-ray interacts with the nuclear

force field

A

Pair Production

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13
Q

A process wherein the mass of positron &

electron is converted to energy

A

Annihilation Radiation

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14
Q

The incident x-ray interacts directly into the

nucleus

A

Photodisintegration

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15
Q

Different degrees of absorption in different

tissues

A

Differential Absorption

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16
Q

Two Other Factors Important in Making a

Radiograph

A
  • X-ray emission spectrum

- Mass density of patient tissue

17
Q

A generalized dulling of the image by x-rays not representing diagnostic information

A

Image Noise

18
Q

It results from approximately 0.5% of the xrays emitted by the x-ray tube

A

Radiographic Image

19
Q

The quantity of matter per unit volume

A

Mass Density

20
Q

Compounds used as an aid for imaging

internal organs with x-rays

A

Contrast Agent

21
Q

It produces excellent high-contrast

radiographs of the organs of GI tract

A

Low-kVp Technique

22
Q

It is used to outline the organ under
investigation & penetrate the CM to
visualized the lumen of the organ more
clearly

A

High-kVp Technique

23
Q

Examination that uses air & barium for

contrast

A

Double Contrast Examination

24
Q

The interaction in which x-ray disappears

A

Absorption Process

25
Q

The removal of x-ray from a beam via the photoelectric effect

A

Absorption

26
Q

The interaction in which x-ray is partially

absorbed

A

Scattering Process

27
Q

The total reduction in the number of x-rays
remaining in an x-ray beam after penetration
through a given thickness of tissue

A

Attenuation

28
Q

Attenuation is the product of..

A

Absorption and Scattering

Bushong Rad Physics (8 decks)

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