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Rad phys exam 1 > Part II > Flashcards

Part II Flashcards

1
Q

Of the following, which would you expect to receive the highest amount of radiation from an x rays procedure?

A

Skin

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2
Q

In which firm would you encounter radon?

A

Gas

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3
Q

Higher energy photons are present with which of the following?

A

Higher frequency

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4
Q

Radon hormesis refers to which of the following?

A

The beneficial effects from exposure to low levels of radiation

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5
Q

Dosimeter is used for which of the folliwing?

A

Detecting radiation

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6
Q

What year was x rays discovered?

A

1895

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7
Q

Which of the following is a primary factor for radiographic contrast?

A

Kv

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8
Q

What effect would reducing FFD have?

A

Number of x rays reaching the film increases

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9
Q

What are considered the standard tube distances (SID)

A

40x72

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10
Q

What is the purpose of rectifiers?

A

Changes the current from alternating to direct

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11
Q

The calculation of MA(kv)(kvp) determines which of the following?

A

Heat units

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12
Q

Which of the following will reduce penumbra?

A

Small focal spot

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13
Q

What is the usual tube warm up procedure?

A

Two exposures with the 2nd using 2 times the mAs

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14
Q

If you produce more xrays, what would you do?

A

Increase the mA

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15
Q

A decrease in the anode angle would have what effect?

A

A smaller effective focal spot

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16
Q

Anode heel effect refers to which of the following?

A

A reduced intensity of the X-ray ray beam on the anode side of the tube

17
Q

Which is the method of choice for limiting the size of the xrays beam?

A

Collimater

18
Q

Where should compensating filtration be used when taking good a lateral thoracic film?

A

The lower thoracic spine

19
Q

Added filtration is a term used for which of the following?

A

Filtration that is between the port and collimater

20
Q

The tube stand should only be moved after which has occured?

A

Lock has been released

21
Q

The 10 day rule every to whigh of the following?

A

10 days after the onset of menses is the safest time to x-rays ray a female

22
Q

If a doctor has inadvertently xrayed a pregnant patient and we’re dumb enough to keep taking good remakes until the fetus has been exposed to 5 rads, what would be the probable outcome?

A

No effect

23
Q

How much lead do most shielding devices have in them?

A

0.5mm

24
Q

Let’s say you fall asleep during a radio class and are dreaming of the annual come as your favorite xrayed machine part costume party at the union. You are coming as tube housing oil so you have a poured bottle of oil on your head. You notice your best friend doesn’t in class is sitting get under one of the tvs experiencing theromionic emmission. With this info, pick which part your friend has dressed as.

A

The filament

Rad phys exam 1 (4 decks)

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