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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

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

21
Q

One sievert =

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
Name the types of radiation that can pass through the skin and modify the atoms in human tissue damaging cells
Ultraviolet light x-rays gamma rays
26
What are 3 factors that influence the potential for damage From ionizing radiation
The amount of radiation exposure, the length of time of exposure, and the type of ionizing radiation
27
This effect occurs when the direct electron bombards and breaks the bond of cellular DNA
Direct
28
This effect happens when the displaced electron collapse with the water molecule causing a chemical reaction that produces free radicals in the cell
Indirect
29
What are examples of radio sensitive cells
Lymphocytes, bone marrow cells, and gonadal germ cells
30
What are some radioresistant cells
Red blood cells, liver cells, and nerve cells
31
What are somatic cells
All cells other than the reproductive cells
32
What are gonadal cells
Reproductive cells
33
This is the total radiation absorbed by the skin at the point where the radiation enters the patient's body
Entrance skin Dose
34
This is a more precise measurement that takes into account the radio sensitivity of organs and tissues and scanning details
Effective dose
35
What is the effective dose for DXA per exam depending on the equipment in site's scan
0.01 - 0.1MREM
36
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
Pencil beam
37
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
Fan beam
38
What is the relatively safe distance for Pencil beam equipment
1m or more
39
What is a relatively safe distance from my fan beam scanner
3m or more
40
Who is responsible for key patient preparation procedures before the examination
The BD technologist
41
What is the only absolute contraindication to DXA scan
Surgical or other alterations of all measurable sites
42
Which Electromagnetic radiation has the highest frequency in shortest wavelength
Gamma
43
One sievert = blank rem
100
44
What is the most common late effect of radiation
Cancer

BD Study Guide (15 decks)

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