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1014 Diagnostic Imaging > Course Introduction > Flashcards

Course Introduction Flashcards

1
Q

what does the collimator do?

A

changes the field size

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2
Q

the anode is ____
the cathode is ____

A

Anode is positive
cathode is negative

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3
Q

what does the x-ray TUBE do?

A

turns potential E into kinetic E

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4
Q

what does isotropic mean?

A

EQUALLY in EVERY direction

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5
Q

what is an image receptor?

A

any devices that captures and stores the x-ray beam

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6
Q

what is photostimulable phosphor?

A

the material inside of the cassette (what makes it work)

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7
Q

what is the material INSIDE the cassette?

A

photostimulable phosphor

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8
Q

what is CR? (not central ray)

A

computed radiography
(electronics are used)

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9
Q

is CR a direct or indirect form of radiography?

A

indirect

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10
Q

is flat panel a form of direct or indirect radiography?

A

direct

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11
Q

what is the primary radiation?

A

the radiation between the target/source and the patient

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12
Q

what is remnant radiation

A

any radiation from the patient to the IR

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13
Q

what is secondary radiaton?

A

radiation from anywhere EXCEPT the source/target

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14
Q

what is scattered radiatrion?

A

any radiation that has been deflected

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15
Q

what is abbrviated with FS/T/S

A

focal spot
target
source

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16
Q

what is SID

A

source to IR distance

17
Q

what is SGD

A

source to grid distance

18
Q

what is SOD

A

source to object distance

19
Q

SOD can be also called: (2)

A

TOD, AOD

20
Q

what is OID

A

object to IR distance

21
Q

what is mAs

A

milliampere seconds
Quantity of radiation, amount of current

22
Q

what is S?

A

the amount of time selected

23
Q

what is kVp?

A

kilovolts peak
energy the photons have

24
Q

what happens to the wavelength when you increase the kVp?

A

wavelength decreases

25
Q

what is CT?

A

computed tomography

26
Q

what is DR and DDR?

A

digital radiography
direct digital radiography

1014 Diagnostic Imaging (2 decks)

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