Test 1 Flashcards

1
Q

Anything human or equipment problems that can result in overall decreased customer satisfaction

A

Variables

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2
Q

Benefits of QM in imaging

A

Lower repeat rates Lower equipment downtime Greatest dept efficiency Increase customer satisfaction Decreased wait times

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3
Q

Who mandates quality management programs in radiology sept

A

The Feds

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4
Q

All encompassing management program to ensure excellence of healthcare through systematic collection and evaluation of data

A

Quality Assurance

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5
Q

Human factors Ex press gained and collecting data

A

Quality assurance

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6
Q

Level at which the institution is at that time

A

Quality Assesment

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7
Q

Part of total management program that deals with instrumentation and equipment

A

Quality control

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8
Q

Levels of quality control

A

Level 1: noninvasive and simple. Performed by any tech, warm ups troubleshooting, and lead apron checks Level 2: noninvasive and complex uses special testing tools performed by specially trained tech. Level 3: invasive and complex, performed by engineers and physicist

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9
Q

JCAHO 10 step method incorporates CQI (4 things method consists of)

A

Design (assign responsibility for dept monitoring) Measure (delineate the scope of care) Assess (identify important aspects of care) Improve (identify indicators or performance measures)

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10
Q

Sentinel event

A

involving death or serious physical/emotional harm

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11
Q

Identifies potential physical and financial risk to pt, employees, or visitors an establish process to minimize them

A

Risk management

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12
Q

Filtration does what

A

Removes low energy photons that would not contribute to image

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13
Q

How much filtration is needed above 70 kvp

A

2.5 mmAl

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14
Q

Lead apron equiv

A

At least .5 mm of pb

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15
Q

Lead gloves equiv

A

At least .25mm (.5 is preferred)

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16
Q

Eyeglasses equiv

A

At least .35 mm al

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17
Q

The measurement of the level of quality at some point in time with no effort to change or improve the level of care is known as quality…

A

Control

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18
Q

Under the safe medical devices act of 1990, voluntary reporting of unsafe medical devices will require the use of form….

A

3500A

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19
Q

Customers who come from outside the healthcare organization are generally referred to as

A

External customers

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20
Q

When did mammography quality standards act become effective

A

April 1999

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21
Q

W. Edwards Deming’s management approach can be summarized by his______ points

A

10

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22
Q

How many levels of quality control testing and monitoring are there

A

3

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23
Q

Which of the following statements is correct about 80/20 rule

A

20% of causes will result in 80% of the problems

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24
Q

How many different methods of disease transmission are stated to be minimized by Tier 2 precautions

A

Three

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25
Invasive quality control equipment Testing is considered to be
Complex
26
Which of the following are normally considered external customers
Inpatients
27
Which of the following is a pictorial representation of a frequency distribution
Histogram
28
The range of variation around the mean is called
Standard deviation
29
The number of items actually measured from a population is called
Sample
30
The FDA uses how many classifications of medical devices
Three
31
What is the average amount of background radiation per yr in the US
360mrem
32
Any activity that costs a facility either money or its reputation is known as
Loss potential
33
Which federal agency is responsible for establishing standards for safety and for monitoring the workplace environment
OSHA
34
Members of the general public who may be exposed to frequent or continuous exposure from artificial sources other than medical exposure have a recommended maximum effective dose equivalent of ____ rem/yr
0.1
35
The maximum dose to the fetus of an occupational worker for the emote gestation period is _____ rem
0.05
36
What is the humidity range for the darkroom an why
30-60% to prevent static electricity (will expose film)
37
A light that emits wavelengths to which some film is not sensitive to
A safelight
38
How far should the safelight be mounted from the feed trays or counters
3-4ft
39
A red safelight is called
GBX light bulbs
40
Program that controls and minimizes variables that result in lost business and revenue or death of or
Quality Management
41
Orthochromatic film
Sensitive to green colors and blue violet Must use purebred light GBX SAFELIGHT
42
Panchromatic film
Sensitive to all colors Cannot be used with any safe light
43
Safelight/ dark room fog test
Xray a penetrometer/ step wedge then take to dark room and cover up 1/2 for 2 min process film then use densitometry to check densities.
44
Store film (upright/flat) to prevent _____ fog
Upright Pressure
45
Normal results for developer temp
+/- .5° 95°
46
What happens if GBX safelight is damaged
Over developed film/ increased fog
47
What does a Densitomitor do
Measures optical density
48
What does a Sensitometer do
Creates optical step wedge by taking unexposed film in dark room expose film with Sensitometer then develop film
49
What do you use and what are the steps involved for testing the wash.
Hypo retention or fixer retention (small bottle with color card) it tests the wash to make sure it has removed the fixer from film to ensure proper archiving. Steps Take a processes film and dab chemical. Wait 2 minutes then develop. Look for yellow spots on film
50
Normal fixer temp variation
+/- 5°
51
pH for fixer
4-4.5
52
pH for developer
10-11.5
53
Another name for step wedge
Penetrometer
54
What is the wire mesh test
Tests film screen contact Looks like a window screen
55
Affecting factors of screen ️️speed
Type of phosphors used ️️Thickness of phosphor layer ️size of phosphor crystals Reflective layer Light absorbing dyes Ambient temp KVp
56
Film and no screen has highest \_\_\_\_\_\_
MTF However direct digital ha highest
57
The acceptable variation o luminance uniformity for a single view box is
10%
58
15 ft-cd would be equivalent to approx _____ lux
160
59
The amount of light either scattered or emitted by a surface is known as
Luminance
60
Which would be considered an acceptable humidity range for film storage
30-60%
61
The acceptable variation of luminance uniformity for view boxes in a single bank is
15%
62
T/F dark rooms that process film images must have adequate water supply and drainage
True
63
Which type of film is designed to be primarily sensitive to ultraviolet light
Duplicating film
64
The recommended color temp for view of illuminators is
6200° K
65
The acceptable level of luminance uniformity for view boxes within the sept is
20%
66
What materials can be found in intensifying screen phosphors
Tungsten Gadolinium Lanthanum
67
Relative screen ️️speed values and screen resolution capability can be said to be
Inversely proportional
68
The ability of an imaging system to distinguish structures with similar xray transmition as separate entities is known as
️contrast ️resolution
69
Which of the following can be thought of as the amount of info recorded in an image divided by the info available in the part
MTF modulation transfer function
70
The rare earth phosphor, lanthanum oxybromide, emits what color of light
Blue
71
Why is it important to perform hypo retention test
Important for archival properties to make sure film doesn't yellow too soon. Too much fixer yellows film quickly
72
Densitometer (looks like)
Blue box
73
Wht is the ️resolution chart
Metal with lines Measures ️resolution in line pairs per mm
74
What is used To check screens for scratches
Ultraviolet light (silver with handle
75
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chemical fog ## Footnote šOver development of film. Excessive base + fog and excessive optical density. šCan be caused by developer temperature being too high, time, pH, and concentration.
76
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Curtain effect ## Footnote šSolution dripping on or running down a film. Forms a pattern resembling a lace curtain. šOccurs if wash water is dirty.
77
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Guide Shoe Marks ## Footnote šScratches on images made by jagged edges of the guide shoes because they may be bent, warn, or damaged šAppear white on radiograph šRun parallel to direction of the film in travel
78
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Pi Lines ## Footnote šArtifacts that occur relative to the circumference of a roller and therefor occur at regular intervals šAppear as dark lines that are perpendicular to the angle of the film in travel
79
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Hesitation Marks Stripes of decreased OD where transport rollers are left in contact with the film and further development is prevented
80
Water spots ## Footnote Occurs when water or other liquid contacts unprocessed image -A pattern of increased optical density appears after processing
81
Wet Pressure Sensitization ## Footnote Dark stripes caused by wet rollers
82
Grid Lines šShadows of the lead strips caused by failure of grid to move. šImproper grid focus šImproper angle šImproper CR and centering. Decreased density-White lines
83
Grid cut off ## Footnote šDecrease in Optical density caused by primary radiation being absorbed by grid. šAny improper use of grid can cause this.
84
Cresent marks ## Footnote šHalf moon shaped marks of increased density. šCaused by bending the film.
85
Tree Static ## Footnote šResembles trees or bushes and is usually caused by low humidity conditions in processing area. šDecreased density. Black “trees”.
86
Crown Static šMarks radiate in one direction to resemble a crown. Excessive friction from pulling on film
87
Smudge Static ## Footnote Resembles “thumb”, dark spots on film Caused by excessive light exposure on film, rough handling in film processing areas.
88
Light Age Safelight Fog šLight of any improper color lowers contrast. šAge may lower image contrast if film has been processed beyond expiration date. Safelight has improper filter, incorrect distance, incorrect wattage
89
Emulsion Pick Off ## Footnote šEmulsion is removed or picked off of film base. šOccurs when two images are stuck together before processing and then pulled apart. šDecreased Density
90
Tube not detented ## Footnote šVertically: Upright bucky, image all at the top or bottom. šHorizontally: Table bucky, image all on one side or the other.
91
Radiation Safety program in QM includes
Rad Safety Officer to ensure ALARA and keep track of personel protection (film badges)
92
Max Effective dose for occupational worker
5 rem/yr .05sV/ yr
93
occupational fetal dose per month
.05 rem .5 mSv
94
occupational fetal dose for entire gestation
5 mSv .5 rem
95
Most common pathology for radiologist
leukemia
96
Half Value Layer (HVL)
reduces the iontensity of the beam by 1/2
97
Ideal repeat percentage
4-6%
98
Non random; difference in true value
Bias
99
Ideal temp for darkroom
65-75 degrees
100
processing times are checked with
a stopwacth
101
toe of sensetomtry graph
Dmin Phenidome
102
Shoulder of sensitometry graph
D max hydroquinone
103
Set of techniques that will proiduce a diagnostic image
Latitude
104