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BD Study Guide > Module 6 > Flashcards

Module 6 Flashcards

1
Q

What is the most important aspect of working with visually impaired patients

A

Ensure the examination room is free of any obstructions or potential hazards

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2
Q

What is the general thought on wait time for a patient who has had contrast

A

One week

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3
Q

When explaining the procedure what should you include

A

What the scan measures the amount of radiation exposure where the bone density measurements are taken the duration of the scan what the equipment sounds like and how it moves and any movement or breathing requirements

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4
Q

This is the transmission of energy in the form of electromatic waves or subatomic high energy particles

A

Radiation

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5
Q

What are some examples of electromagnetic energies

A 
Microwaves 
infrared light 
visible light 
ultraviolet light 
x-rays
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6
Q

What are the 2 conventional units of measure for analyzing radiation and radioactivity

A

Conventional units of measure and

International system of units or SI units

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7
Q

What is the basic unit of radiation

A

The curie

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8
Q

This unit describes the rate at which radioactive atoms decay

A

Curie

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9
Q

The SI equivalent for the curie is the

A

BECQUEREL Named after the physicist who discovered radio activity

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10
Q

This unit describes the measurement of gamma ray and X-ray exposure in air

A

The ROENTGEN, After the one who discovered x-rays

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11
Q

This measures how much radiation is needed to create one charge in 1KG of dry air

A

ROENTGEN

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12
Q

This is measured by the exposure of any kind of medium to any type of ad noise and radiation

A

Absorbed dose

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13
Q

RAD

A

Radiation absorbed dose

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14
Q

The SI unit for the rad is the

A

Gray Gy

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15
Q

1Gy =

A

One joule of radiation energy absorbed particular gram of an object

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16
Q

The dose equivalent measurement for radiation exposure to living tissue is

A

REM roentgen equivalent mean

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17
Q

One rad = Blank rem

A

1

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18
Q

What is the weighting factor for x-rays

A

1

19
Q

What is the weighting factor for alpha particles

A

20, So 1 rad of alpha particle exposure = 20REM

20
Q

What is the SI unit for REM

A

Siervert

21
Q

One sievert =

A

100 rem

22
Q

What are the 4 radiation sources

A

Air food water and Earth

23
Q

Types of natural radiation

A

Cosmic which is released by the sun and stars. Terrestrial can be found in the surrounding soil water and plant life.

24
Q

Most individuals are exposed to blank MREM of natural radiation each day

A

0.5 to 0.8

25
Q

Name the types of radiation that can pass through the skin and modify the atoms in human tissue damaging cells

A

Ultraviolet light
x-rays
gamma rays

26
Q

What are 3 factors that influence the potential for damage From ionizing radiation

A

The amount of radiation exposure, the length of time of exposure, and the type of ionizing radiation

27
Q

This effect occurs when the direct electron bombards and breaks the bond of cellular DNA

A

Direct

28
Q

This effect happens when the displaced electron collapse with the water molecule causing a chemical reaction that produces free radicals in the cell

A

Indirect

29
Q

What are examples of radio sensitive cells

A

Lymphocytes, bone marrow cells, and gonadal germ cells

30
Q

What are some radioresistant cells

A

Red blood cells, liver cells, and nerve cells

31
Q

What are somatic cells

A

All cells other than the reproductive cells

32
Q

What are gonadal cells

A

Reproductive cells

33
Q

This is the total radiation absorbed by the skin at the point where the radiation enters the patient’s body

A

Entrance skin Dose

34
Q

This is a more precise measurement that takes into account the radio sensitivity of organs and tissues and scanning details

A

Effective dose

35
Q

What is the effective dose for DXA per exam depending on the equipment in site’s scan

A

0.01 - 0.1MREM

36
Q

These types of scanners have very good precision in decreased patient dose but the scanning time is much longer and images have a lower resolution

A

Pencil beam

37
Q

these scanners offer a much shorter scan time and increase the resolution but at the expense of patient dose and the precision of the scan

A

Fan beam

38
Q

What is the relatively safe distance for Pencil beam equipment

A

1m or more

39
Q

What is a relatively safe distance from my fan beam scanner

A

3m or more

40
Q

Who is responsible for key patient preparation procedures before the examination

A

The BD technologist

41
Q

What is the only absolute contraindication to DXA scan

A

Surgical or other alterations of all measurable sites

42
Q

Which Electromagnetic radiation has the highest frequency in shortest wavelength

A

Gamma

43
Q

One sievert = blank rem

A

100

44
Q

What is the most common late effect of radiation

A

Cancer

BD Study Guide (15 decks)

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