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radr 1201 > CHAPTER 1 > Flashcards

CHAPTER 1 Flashcards

1
Q

what is ALARA?

A

As low as reasonable achievable

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2
Q

what is medical radiation used for in science?

A

to create images of the human body

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3
Q

some energies create ____ in human tissue.

A

Ionization

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4
Q

As wavelength decreases, frequency is …?

A

frequency increases

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5
Q

As energy increases frequency…?

A

increases as well

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6
Q

wavelength and frequency is …?

A

irreversible proportioned

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7
Q

Energy and frequency is …?

A

opposite proportioned

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8
Q

what is the scientific notation for speed of light?

A

3x10^8

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9
Q

sound exposes…?

A

medical sonography

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10
Q

Heat exposes …?

A

thermography

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11
Q

Electromagnetic exposes…?

A

• x-rays
• radio waves

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12
Q

magnetic exposes…?

A

Magnetic Resonance Imaging (MRI)

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13
Q

Nuclear exposes …?

A

Gamma Radiation

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14
Q

Electrical exposes …?

A

• Electrocardiography
• Radio waves

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15
Q

Nuclear causes what?

A

Ionization

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16
Q

what is Ionization?

A

The application or removal of an electron from an atom

17
Q

X-rays absorb differently in …?

A

Less dense and more dense organs

18
Q

Each organ has different ___ ___ which absorbs x-rays differently

A

Atomic Number

19
Q

Bones have the highest ___ which makes the x-ray more visible

A

Atomic Number

20
Q

MRI doesn’t do what?

A

doesn’t create Ionizations

21
Q

Sonography doesn’t do what?

A

Does not create ionization

22
Q

What can contrast do?

A

Enhance the image to see organs better

23
Q

MRI is loud so what is provided to patients?

A

Ear protection (ear plugs)

24
Q

When claustrophobic occurs what is a solution option?

A

Oral Sedative

25
Q

CT means?

A

Computed Tomography

26
Q

CT can do what?

A

Ionize tissue

27
Q

Nuclear Medicine uses what type of energy?

A

Gamma Radiation

28
Q

Nuclear Medicine can do what?

A

Ionize tissue

29
Q

Cardiovascular and interventional imaging is used for?

A

visualize blood vessels and heart anatomy

30
Q

what does Radiation therapy treat?

A

Malignant tumors (cancer)

31
Q

How long does Radiation therapy last?

A

30-40mins

radr 1201 (2 decks)

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