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
What view is this?
ventrodorsal
26
Explain the process of MRIs imaging.
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