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RADT 251 > Ch 1 and 2 > Flashcards

Ch 1 and 2 Flashcards

1
Q

x-rays are electrically (charged/neutral)

A

neutral

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2
Q

x-rays have ___________ beams and travel in _______

A

heterogeneous, straight

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3
Q

another word for highly reactive free molecules

A

free radicals

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4
Q

what is diagnostic efficacy?

A

the degree to which the diagnostic study accurately reveals the presence or absence of disease in the patient

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5
Q

diagnostic efficacy: the degree to which the ____________ accurately reveals _______________ in the patient

A

diagnostic study, the presence or absence of disease

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6
Q

Image Gently pertains to _______; Image Wisely pertains to ________

A

pediatrics, adults

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7
Q

three types of radiation quantities

A

exposure, absorbed dose, effective dose

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8
Q

what does ORP stand for? what is it synonymous for?

A

optimization for radiation protection; ALARA

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9
Q

exposure is the amount of ______________ when ionizing radiation is present

A

ionization produced in air

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10
Q

absorbed dose is amount of __________ that is deposited in a ____________________

A

energy, material per unit mass of the material

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11
Q

effective dose is the best overall measure of the ________________________

A

biologic effects of ionizing radiation

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12
Q

exposure is measured in

A

C/kg; mR

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13
Q

absorbed dose is measured in

A

mGy

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14
Q

effective dose is measured in

A

mSv

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15
Q

what does BERT stand for?

A

background equivalent radiation time

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16
Q

BERT
-(does/does not) imply radiation risk
-emphasizes radiation as ______________
-easy for patient to comprehend

A

-does not
-an innate part of our environment

17
Q

What is Pause and Pulse?

A

a campaign for fluoroscopy in pediatrics

18
Q

Alliance for Radiation Safety in Pediatric Imaging was initiated in _____, which created __________ in ___

A

2007, Image Gently, 2008

19
Q

Image Gently was founded by ________; in what year?

A

Alliance for Radiation Safety in Pediatric Imaging, 2008

20
Q

Image Wisely was founded by __________; in what year?

A

American College of Radiology (ACR), Radiological Society of North America (RSNA); 2009

21
Q

NEXT stands for

A

Nationwide Evaluation of X-rays Trends

22
Q

NEXT pertains to ______________

A

reference values of patient dose

23
Q

types of ionizing radiation

A

x-rays, gamma rays, high energy ultraviolet radiation

24
Q

types of nonionizing radiation

A

ultraviolet radiation, visible light, infrared rays, microwaves, radio waves

25
Q

full range of frequencies and wavelengths of electromagnetic waves

A

electromagnetic spectrum

26
Q

changes in blood count are an example of

A

organ damage

27
Q

how much average yearly dose from all sources? How is this sub-divided

A

5.5 mSv

3.1 mSv medical
2.3 mSv background
0.1 mSv human-made radiation

28
Q

types of particulate radiation

A

alpha, beta, neutrons, protons

RADT 251 (8 decks)

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