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Radiology > Radiology Basics > Flashcards

Radiology Basics Flashcards

1
Q

What are the Roentgen signs?

A

size, shape, number, opacity, location/position, margins/contour

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2
Q

What is missing from this radiograph?

A

the lungs

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3
Q

What is radiographic opacity?

A

the degree of object whiteness or blackness

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4
Q

Radiopaque

A

Brigter, relative whiteness

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5
Q

Radiolucent

A

darker, relative blackness

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6
Q

What are the five basic radiographic opacities?

A

air, fat, fluid, bone, metal

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7
Q

What opacity is number 1?

A

air

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8
Q

What opacity is number 2?

A

fat

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9
Q

What opacity is number 3?

A

fluid

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10
Q

What opacity is number 4?

A

bone

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11
Q

What opacity is number 5?

A

metal

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12
Q

What is the opacity of a structure affected by?

A

adjacent/surrounding opacity

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13
Q

What is border effacement?

A

a lack of contrast between structures that are in contact and have the same radiographic opacity causes the loss of the margin/outline

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14
Q

What is summation?

A

additive absorption of x-Ray bean by objects that are not in contact

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15
Q

What is a good example of summation?

A

the kidneys in lateral views

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16
Q

What is distortion?

A

unequal magnification

17
Q

What is this radiograph an example of?

A

a type I physeal fracture

18
Q

What do you name a radiographic view based on?

A

the point of the beam enterance to the point of exit

19
Q

What is this view?

A

extended leg ventrodorsal view

20
Q

What is this view?

A

craniocaudal

21
Q

What is this view?

A

caudocranial

22
Q

On all lateral views, what should always point to the left?

A

the animals nose

23
Q

For all dorsoventral or ventrodorsal views, where should the right side of the animal always be?

A

on the viewers left side

24
Q

What view is this?

A

dorsoventral

25
Q

What view is this?

A

ventrodorsal

26
Q

Explain the process of MRIs imaging.

A

the magnetic field is used to align hydrogen protons in the body, the radio frequency waces are absorbed by the bodys protons and then emitted as a signal, a radio frequency coil picks up the signal and transmits it to a computer, the computer processes it

Radiology (5 decks)

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