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Prin of RAD - 1 > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

How many bones are in the human body?

A

206

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2
Q

The number 1 way of preventing spread of microorganisms is _____

A

Hand Washing

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3
Q

Organization that provides directives for infection control

A

CDC

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4
Q

What is peristalsis?

A

Rhythmic action of muscular tissue present in the digestive system

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5
Q

Examples of voluntary movement include:

A

Nervousness
Discomfort
Excitability
Mental illness
Fear
Age
Breathing

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6
Q

How can a technologist control voluntary motion?

A

Giving clear instructions
Providing comfort
Adjusting support devices
Applying immobilization
DECREASE EXPOSURE TIME

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7
Q

What is an IR?

A

Image Receptor

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8
Q

What devices can be place between the patient and the IR?

A

Grids
Lead Shields
Filters

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9
Q

Primary factors in technique include:

A

mAs
kVp
AEC’s
SID
Patient size
IR/ radiation field dimensions

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10
Q

What is another term for the “principal beam of rays”?

A

The Central Ray (CR)

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11
Q

How is the central ray positioned in relation to the structure of interest?

A

Perpendicular

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12
Q

What is SID?

A

Source to Image Distance

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13
Q

Why is SID important?

A

Magnification of anatomy
Spacial resolution
Patient dose

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14
Q

True or False: Increasing the SID will decrease the patient dose.

A

True, a higher SID decreases both magnification and patient dose

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15
Q

What is the date of the first X-rays creation

A

November 8,1895

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16
Q

The 2 main purposes of collimation are:

A

Minimize radiation to the patient
Reduce scatter radiation

17
Q

Describe “Anatomical Position”

A

The subject is standing upright (erect), facing forward, arms extended by their sides with palms of the hands directed forward, heels together and toes pointing anteriorly.

18
Q

What do PA and AP stand for?

A

PA - Posterior-Anterior (Back to Front)
AP - Anterior-Posterior (Front to Back)

19
Q

What do AP, PA and lateral refer to?

A

The path of the central ray through the body.

20
Q

What does ALARA stand for?

A

As Low As Reasonably Achieveable

21
Q

What does ASIS stand for?

A

Anterior Superior Iliac Spine

Prin of RAD - 1 (3 decks)

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