1
Q
Test Frequency for REPEAT ANALYSIS
A
Semiannually (review rejected films immediately for corrective action)
2
Q
Standard for REPEAT ANALYSIS
A
None but goal should be less than 5% repeat
rate
3
Q
While it is required that a facility calculate its repeat
rate at least semiannually, the repeat analysis is what?
A
an ongoing process.
4
Q
While it is required that a facility calculate its repeat
rate at least WHAT, the repeat analysis is an
ongoing process.
A
at least semiannually
5
Q
Every time a film must be repeated, a review of why it was necessary to
repeat the x-ray should be conducted. The reason for the repeat should
be documented, then, HOW MANY TIMES IN A YEAR, the repeat rate is calculated.
A
twice a year
5
Q
IN REPEAT ANALYSIS, By WHAT reviewing the documented reasons why films are repeated,
trends or frequent errors can be determined and steps can be taken to
correct the errors.
A
periodically
5
Q
Every time a film must be repeated, a review of why it was necessary to
repeat the x-ray should be conducted. The reason for the repeat should
be documented, then, twice a year, the repeat rate is WHAT?
A
calculated
6
Q
IN REPAET ANALYSIS, By
periodically reviewing the documented reasons why films are repeated,
WHAT can be determined and steps can be taken to
correct the errors
A
trends or frequent errors
7
Q
IN REPEAT ANALYSIS, By
periodically reviewing the documented reasons why films are repeated,
trends or frequent errors can be determined and steps can be taken to
correct the WHAT
A
correct the errors
8
Q
A carefully carried out repeat analysis will ensure quality radiographs by
reducing the number of clinical films that are repeated. This analysis will
help to identify ways WHAT??
A
- to reduce both costs (wasted film and processor
chemicals and wear on the equipment) and unnecessary radiation exposure - and inconvenience to the patient.
8
Q
A carefully carried out repeat analysis will ensure WHAT that are repeated.
A
ensure quality radiographs by
reducing the number of clinical films that are repeated
9
Q
Reasons for repeats are usually divided into three major categories:
A
1.EQUIPMENT including, but not limited to, inaccurate kVp, mA etc., light
field/x-ray field misalignment, darkroom fog, and processor problems.
2. PATIENT including, but not limited to, motion, breathing, jewelry or
other foreign objects, and other body parts overlapping area of interest.
3. X-RAY PERSONNEL ERROR including, but not limited to, improperly
set techniques (kVp, etc.), improper collimation, improper positioning, and
poor film handling
9
Q
A carefully carried out repeat analysis will ensure quality radiographs by
reducing the number of clinical films that are repeated. This analysis will
help to identify ways to reduce both costs (wasted film and processor
chemicals and wear on the equipment) and unnecessary radiation
exposure and inconvenience to the patient. The facility should work
towards a repeat rate of less than HOW MANY PERCENT?
A
a repeat rate of less than five percent.
10
Q
IN REPEAT ANALYSIS, In order to reduce repeats, it is necessary to know what THAT are being repeated and why.
A
(chest, abdomen, etc.) and projections (AP, lateral, etc.)
11
Q
WHAT is important IN REPEAT ANALYSIS.
A
Immediate analysis is important
12
Q
IN REPEAT ANALYSIS, The problems can then be addressed more
efficiently. The analysis will demonstrate the WHAT?
A
The analysis will demonstrate the strengths and weaknesses of the x-ray operation
13
Q
IN REPEAT ANALYSIS, WHAT is a valuable QA improvement tool.
A
The data from the repeat analysis
14
Q
IN REPEAT ANALYSIS, The data from the repeat analysis is a WHAT?
A
a valuable QA improvement tool.
15
Q
IN REPEAT ANALYSIS,
While some are computerized, most usually consist of WHAT that are placed
on the films at the time of rejection indicating the reason.
A
labels
15
Q
VERY IMPORTANT NOTE IN REPEAT ANALYSIS
A
ALL SUBSTANDARD FILMS SHOULD BE IMMEDIATELY
ANALYZED FOR THE CAUSE OF THE REPEAT AND LOGGED ON
THE REPEAT ANALYSIS FORM. THE DATA ARE USED TO
CALCULATE THE REPEAT RATE
16
Q
IN REPEAT ANALYSIS,
These systems can be beneficial especially for facilities with a WHAT
A
a high volume
16
Q
IN REPEAT ANALYSIS, WHAT is usually provided to tabulate results
A
A chart(s)
16
Q
IN REPEAT ANALYSIS,
Repeat analysis should be designed to accurately evaluate the WHAT THAT ARE being produced by the facility.
A
type of radiographs
17
Q
IN REPEAT ANALYSIS, Analyzing repeated films/exposures:
1. Review each exposure carefully as it is completed.
2. If any exposure needs to be repeated, the reason should be documented
WHAT?
A
should be documented
on the Repeat Analysis Form or what ever tracking system the facility is using
17
IN REPEAT ANALYSIS,
(Note! For large volume facilities like hospitals, the repeat rate may be
WHAT? However, all repeated
films must be evaluated immediately.)
may be calculated by using a statistically significant sample
17
IN REPEAT ANALYSIS,
CORRECTIVE ACTION:
The percentage of repeats should guide the facility to focus their efforts to
those areas needing the most attention. For example, films that are too light
or too dark may be due to WHAT? that
require repair or re-calibration, or technique charts may need updating. All
corrective actions need to be documented.
processing problems or equipment problems
17
IN REPEAT ANALYSIS, Analyzing repeated films/exposures:
3. The results of these reviews should be tabulated periodically. For large
facilities, HOW MANY TIME OF analysis is needed;
frequent (perhaps weekly) analysis is needed
17
IN REPEAT ANALYSIS, Calculating the repeat rate:
1. At the beginning of the analysis period, record the WHAT?. If additional film is received during the analysis
period, be sure to record the additional film on the form. For facilities
with digital or computed radiography, be sure to include ALL exposures
in analysis.
record the number of sheets of unused film in the facility
17
IN REPEAT ANALYSIS,
Records: Maintain record of repeat analysis for HOW MANY YEARS
for 1 year
17
IN REPEAT ANALYSIS, Example: If the facility has students, the repeats from students should be evaluated WHAT from the other x-ray personnel.
independently
18
IN REPEAT ANALYSIS,
3. The results of these reviews should be WHAT?. For large
facilities, frequent (perhaps weekly) analysis is needed; smaller facilities will
usually have fewer repeated films, so less frequent analysis is needed.
tabulated periodically
19
IN REPEAT ANALYSIS, Analyzing repeated films/exposures:
3. The results of these reviews should be tabulated periodically. For large
facilities, frequent (perhaps weekly) analysis is needed; smaller facilities will
usually have WHAT?
have fewer repeated films, so less frequent analysis is needed.
19
IN REPEAT ANALYSIS, Calculating the repeat rate:
1. At the beginning of the analysis period, record the number of sheets of
unused film in the facility. If additional film is received during the analysis
period, be sure WHAT?. For facilities with digital or computed radiography, be sure to include ALL exposures
in analysis.
be sure to record the additional film on the form.
20
Test Frequency FOR ARTIFACT EVALUATION
Examine every film for artifacts, in-depth evaluation
semiannually
20
Standard FOR ARTIFACT EVALUATION
No significant artifacts
20
IN ARTIFACT EVALUATION,
* While gross artifacts, especially those WHAT will be immediately noticed; small
artifacts that do not detract from the diagnostic quality of the films may
be missed.
in the area of interest (such as in the lung field of a chest x-ray)
20
IN ARTIFACT EVALUATION,
* All films should be WHAT? as they are produced
should be examined for artifacts
21
IN ARTIFACT EVALUATION,
* If an artifact is noted on any film, WHAT and
correct it
immediately investigate the cause
22
IN ARTIFACT EVALUATION,
* It will also prevent small repairs from becoming larger and more costly
repairs. Conduct A WHAT?
an in-depth analysis semiannually.
23
IN ARTIFACT EVALUATION,
Both an immediate artifact detection process and an in depth evaluation
semi-annually is necessary due to WHAT?
the nature of medicine
23
IN ARTIFACT EVALUATION,
* While WHAT, especially those in the area of interest (such as in the lung field of a chest x-ray) will be immediately noticed; small
artifacts that do not detract from the diagnostic quality of the films may
be missed.
gross artifacts
24
IN ARTIFACT EVALUATION,
* While gross artifacts, especially those in the area of interest (such as in
the lung field of a chest x-ray) will be immediately noticed; small artifacts that do not detract from the diagnostic quality of the films may
be WHAT?
may be missed.
25
IN ARTIFACT EVALUATION,
WHAT are marks on the film that do not contribute to or may
decrease the diagnostic value of the film.
Artifacts
25
IN ARTIFACT EVALUATION, Artifacts are marks on the film that WHAT?
that do not contribute to or may decrease the diagnostic value of the film
26
IN ARTIFACT EVALUATION,
* They may in fact cause a misdiagnosis by either WHAT. Artifacts must be kept to a minimum.
by either masking or imitating
pathology
26
IN ARTIFACT EVALUATION,
* They may in fact cause a WHAT by either masking or imitating
pathology. Artifacts must be kept to a minimum.
cause a misdiagnosis
26
IN Some Common Artifacts And Their Causes, what is Crescent shaped mark resulting from
bending the film while loading or unloading film
Crinkle marks (Finger nail)
27
IN ARTIFACT EVALUATION,
* As most artifacts are the result of WHAT in the
darkroom or processor problems, they can be easily minimized through
a good quality assurance program.
improper film handling
27
Artifacts fall into four categories:
1. Darkroom problems, including film handling, darkroom cleanliness
and darkroom fog.
2. Processor problems, including dirty rollers, light leaks, improper
drying.
3. Patient caused artifacts, including clothing, jewelry, hair mousse.
4. Cassette and screen problems, including warping, cracking,
discoloration and dirt or dust
27
IN ARTIFACT EVALUATION, Artifacts are marks on the film that do not contribute to or may
decrease the diagnostic value of the film.
* They may in fact cause a misdiagnosis by either masking or imitating
pathology. Artifacts must be kept to a WHAT
a minimum
28
Equipment Required IN ARTIFACT EVALUATION:
1. At least 5 films from each processor
2. Magnifying glass
3. Book on film artifact identification
28
IN ARTIFACT EVALUATION,
1. Examine a large enough number of films to determine if there are
artifact problems. At least HOW MANY films from each processor should be
examined.
At least 5 films from each processor should be
examined
29
IN ARTIFACT EVALUATION,
2. Make WHAT of all artifacts and their WHAT. Comparisons of artifacts with published examples are helpful to determine their cause
Make note of all artifacts and their probable cause. Comparisons of artifacts with published examples are helpful to determine their cause.
29
IN ARTIFACT EVALUATION, 5. Record on WHAT and
maintain record for 1 year
Quality Control Log - Semi-Annual Tests (Form 6)
29
IN ARTIFACT EVALUATION, 5. Record on Quality Control Log - Semi-Annual Tests (Form 6) and
maintain record for HOW MANY YEARS
for 1 year
30
IN Some Common Artifacts And Their Causes, what is Relative humidity is low and clothing generates static
electricity which discharges onto film during handling
Trees (static)
30
IN ARTIFACT EVALUATION, 5. CORRECTIVE ACTIONS: must be completed within HOW MANY DAYS, documented and records retained for a
minimum of HOW MANY years.
IN ARTIFACT EVALUATION, 5.
CORRECTIVE ACTIONS: must be completed within 30 days,
documented and records retained for a minimum of 2 years.
30
Some Common Artifacts And Their Causes
1. Scratches: Dirt on counter top or feed tray Dirty or damaged
processor rollers/guide shoes/turnarounds Stuck film which is
scratching other films
2. Fingerprints, smudges: Wet or dirty hands when handling film
3. Crinkle marks (Finger nail): Crescent shaped mark resulting from
bending the film while loading or unloading film
4. Partially exposed or fogged film: Light leak in darkroom or cassette
Scatter radiation to cassettes left in x-ray room during exposure
5. Trees (static): Relative humidity is low and clothing generates static
electricity which discharges onto film during handling
6. Black spots: Film got wet or contaminated prior to processing
Emulsion from pervious films transfers from dirty processor roller to film
7. White spots: Dirty screens Emulsion pulled from film by dirty
processor rollers Defect in film emulsion
8. Brown film: Inadequate washing, Inadequate fixing
9. Water spots: Depleted chemicals in processor Poor squeegee action at
wash rack exit Clogged dryer air tubes
30
IN Some Common Artifacts And Their Causes, what is Dirty screens Emulsion pulled from film by dirty
processor rollers Defect in film emulsion
White spots
31
IN Some Common Artifacts And Their Causes, what is Dirt on counter top or feed tray Dirty or damaged
processor rollers/guide shoes/turnarounds Stuck film which is
scratching other films
Scratches
31
IN Some Common Artifacts And Their Causes, what is Wet or dirty hands when handling film
Fingerprints, smudges
31
IN Some Common Artifacts And Their Causes, what is Film got wet or contaminated prior to processing
Emulsion from pervious films transfers from dirty processor roller to film
Black spots
31
IN Some Common Artifacts And Their Causes, what is Light leak in darkroom or cassette
Scatter radiation to cassettes left in x-ray room during exposure
Partially exposed or fogged film
32
IN Some Common Artifacts And Their Causes, what is Depleted chemicals in processor Poor squeegee action at
wash rack exit Clogged dryer air tube
Water spots
32
IN Some Common Artifacts And Their Causes, what is : Inadequate washing, Inadequate fixing
Brown film
33
test frequency for analysis of fixer retention
Initially and semiannually
34
in analysis of fixer retention, * This test determines the WHAT remaining in
processed film
quantity of residual fixer
35
in analysis of fixer retention,
* Excessive fixer will WHAT
will degrade the quality of the image on stored
radiographs
35
in analysis of fixer retention, *
* It is an indicator of WHAT quality of the radiographs
storage
36
in analysis of fixer retention, * WHAT will degrade the quality of the image on stored
radiographs
Excessive fixer
36
standard for analysis of fixer retention
5-micrograms/sq. centimeter (or 0.05 grams/sq. meter)
37
in analysis of fixer retention, * WHAT indicates that the film is not being adequately
washed. Possible causes are insufficient wash time or the wash water is
not being exchanged fast enough
Excessive hypo retention
37
in analysis of fixer retention, *
* Excessive hypo retention indicates that the film is WHAT. Possible causes are insufficient wash time or the wash water is
not being exchanged fast enough
is not being adequately
washed
38
in analysis of fixer retention,
* Excessive hypo retention indicates that the film is not being adequately
washed. Possible causes are insufficient wash time or the wash water is
WHAT
not being exchanged fast enough
38
Equipment Required in analysis of fixer retention:
* Hypo test kit
* Eyedropper - if not provided with hypo test kit
* Paper towels
* White paper
* Form Quality Control Log – Semi-annual Tests
38
Equipment Required in analysis of fixer retention:
* 2. Place HOW MANY DROPS of the residual hypo test solution on the film
Place one drop of the residual hypo test solution on the film.
38
Equipment Required in analysis of fixer retention: * 1. Process HOW MANY sheets of unexposed film.
Process one sheet of unexposed film
39
Equipment Required in analysis of fixer retention:
* 4. For dual sided emulsion film, you need HOW MANY SIDES SHOUD PUT ON THE ON film
For dual sided emulsion film, you need only do one side of film
39
Equipment Required in analysis of fixer retention:
* 5. Allow the solution to stand for HOW MANY minutes.
Allow the solution to stand for two minutes
40
Equipment Required in analysis of fixer retention:
* 5. Allow the solution to stand for two minutes.
* 6. Blot off excess solution with WHAT.
paper towel
40
in analysis of fixer retention:
CORRECTIVE ACTION:
Check to see if the water for the processor is WHAT.
If the same result is obtained, contact the processor service company and
have them service the processor.
turned on
40
(Note! This test is not required for the Polaroid Instant film System.
analysis of fixer retention AND DARKROOM FOG
40
in analysis of fixer retention:
CORRECTIVE ACTION:
All corrective actions must be completed within HOW MANY days, documented
and records retained for a minimum of HOW MANY years.
All corrective actions must be completed within 30 days, documented
and records retained for a minimum of 2 years.
41
test frequency for darkroom fog
Initially, thereafter semiannually AND after each
change to the darkroom
41
Standard for darkroom fog
0.05 Optical Density Difference
42
in darkroom fog,
* To ensure that the darkroom safelights and other light sources inside
and outside of the darkroom WHAT
do not contribute to the fogging of the
radiographic film
42
in darkroom fog,
* This test should be repeated after each WHAT or any change in
the darkroom that could affect darkroom fog conditions.
bulb change
42
Equipment Required in darkroom fog
* Opaque card
* Densitometer
* Timer
* Radiographic film and cassette
* Form Quality Control Log - Semi-Annual Tests
42
Equipment Required in darkroom fog:
1. Ensure that all safelight filters are those specified by the film manufacturer. The filters must WHAT. Also ensure
that the bulbs are the appropriate wattage and the safelight is placed at
the appropriate distance from the film handling area.
The filters must not be faded or cracked.
42
Equipment Required in darkroom fog:
* 2. Turn off all the lights the darkroom and wait FOR HOW MANY minutes to allow your
eyes to adjust to the darkness.
Turn off all the lights the darkroom and wait 5 minutes to allow your
eyes to adjust to the darkness.
42
Equipment Required in darkroom fog:
* 8. Make an exposure using the technique factors of HOW MANY KVP AND MAS?.
40-50 kVp and 1 or
2 mAs (400 speed film).
42
Equipment Required in darkroom fog:
10. Turn on all safelights for HOW MANY minutes.
2 minutes
42
Equipment Required in darkroom fog:
(Note! The optical density of the covered side of the film should be in
the range of HOW MANY on the densitometer. If it is greater or less,
decrease or increase the mAs accordingly.)
1.4 to 2.0 on the densitometer
43
Equipment Required in darkroom fog:
* Determine the amount of darkroom fog by subtracting the density
measurement of the unfogged area from the density measurement of
the fogged area. Darkroom fog should be WHAT
should be no greater than 0.05.
43
Equipment Required in darkroom fog:
* 13. If darkroom fog is greater than 0.05, WHAT. If the results remain the same, a light leak is the probable cause of
the problem. If the fog level disappears, the fog was due to the safelight.
* 14. Record on Quality Control Log - Semi-Annual Tests (Form 6) and
maintain record and film for 1 year.
Repeat the test with the safelight
off.
43
Equipment Required in darkroom fog:
* 13. If darkroom fog is greater than 0.05, repeat the test with the safelight
off. If the results remain the same, WHAT is the probable cause of
the problem
a light leak
43
Equipment Required in analysis of fixer retention:
* 8. Record on WHAT
Record on Quality Control Log - Semi-annual Tests and maintain record
of 1 year.
43
in analysis of fixer retention:
CORRECTIVE ACTION:
If the stain indicates that there is more than HOW MANY micrograms per square
centimeter residual hypo in the film, the test should be repeated.
more than 5 micrograms per square
centimeter
44
Test Frequency FOR Screen-Film Contact/Cassette Integrity/Screen Cleanliness
Initially and annually therefore or as needed
44
Standard FOR Screen-Film Contact/Cassette Integrity/Screen Cleanliness
No areas of poor contact > 2 cm in diameter
44
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Cassettes used for diagnostic examinations should be WHAT that may degrade image quality.
should be free of dust and
dirt particles
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Cassettes used for diagnostic examinations should be free of dust and
dirt particles that may WHAT
degrade image quality.
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Each cassette-screen combination should have its own unique
identification. This allows the identification of any cassette in which
artifacts are noticed much easier. Each screen should be marked with a
unique identifier near the edge of the screen WHAT. The same identification number should also be
placed on the outside of the cassette. Cassettes that contain artifacts
should be cleaned and/or removed from service and/or replaced.
using an opaque,
permanent marker
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
* The film used must be matched to the screen’s light output as specified
by the manufacturer. In other words if the intensifying screen produces
WHAT
green light
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, The procedure ensures that optimum contact is maintained between the
screen(s) and film in each cassette.
Film-Screen Contact
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
- 1/8 inch mesh Brass or Copper Screen. The mesh can be placed between two thin sheets of acrylic or cardboard to protect it.
- All cassettes.
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
1. Load cassette to be tested and let rest for approximately FOR HOW MANY minutes to
allow trapped air to escape.
15 minutes
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
3. Place the wire mesh screen on top of the cassette and make an
exposure. The optical density on the film should be between HOW MANY Suggested technique is 1 or 2 mAs at 50 kVp
1.0 and 2.0
45
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
3. Place the wire mesh screen on top of the cassette and make an
exposure. The optical density on the film should be between 1.0 and
2.0. Suggested technique is WHAT
1 or 2 mAs at 50 kVp
46
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
5. View the film on a view box in a room with WHAT . Stand 6 -8 feet from the view box to evaluate the film
with low ambient light
47
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
5. View the film on a view box in a room with low ambient light. Stand HOW MANY FEET feet from the view box to evaluate the film
Stand 6 -8 feet from the view box to evaluate the film.
48
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
CORRECTIVE ACTION: Areas greater than HOW MANY cm in diameter of poor
contact indicate the need for corrective action. Clean the cassettes and
retest. Areas of poor contact around the periphery of the cassette may
indicate faulty latches or worn seals on the cassette. If cleaning does not
eliminate the areas of poor contact, the cassette should be replaced. Most
cassettes have a life expectancy of 10 years with adequate care. All
corrective actions must be completed within 30 days, documented and
records retained for a minimum of 2 years.
2cm
48
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness, Equipment Required:
CORRECTIVE ACTION: Areas greater than 2cm in diameter of poor
contact indicate the need for corrective action. Clean the cassettes and
retest. Areas of poor contact around the periphery of the cassette may
indicate faulty latches or worn seals on the cassette. If cleaning does not
eliminate the areas of poor contact, the cassette should be replaced. Most
cassettes have a life expectancy of WHAT All
corrective actions must be completed within 30 days, documented and
records retained for a minimum of 2 years.
a life expectancy of 10 years with adequate care
48
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Cassette Integrity
* Equipment Required
All Cassettes, Quality Control Log
49
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Cassettes must be in good physical condition in order to prevent light
leaks that will fog film.
Cassette Integrity
50
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Cassette Integrity :
1. Examine each cassette. Cassette should be in good physical condition
with no cracks, dents or other damage.
* 2. Check hinges. Cassette should close fully and easily. There should be
no gaps around edges of cassette.
* 3. Check latches. They should work easily to open cassette. They
should close and lock easily.
* 4. Open cassette. Check condition of screens and grids. Screens and
grids should not be cracked, broken or discolored
51
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Cassette Integrity : * CORRECTIVE ACTION:
replace or repair damaged cassettes
immediately. If screens or grids appear damaged, they should be
replaced. All corrective actions must be completed within 30 days,
documented and records retained for a minimum of 2 years.
52
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required
- Screen cleaner (as recommended by the
manufacturer of the screens)
* Lint-free gauze pad, equivalent lint-free cloth, or camel hairbrush.
* All cassettes
53
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required:
2. Dust the screen with the WHAT
* 3. If foreign material (e.g. dirt, developer solution) can not be readily
removed with a camel hairbrush or canned air, use liquid screen
cleaner.
* 4. After cleaning with manufacturer approved cleaners, screens should
be allowed to air-dry, standing vertically, before returning the cassette to
use
camel hairbrush and canned air
54
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required:
* 3. If foreign material (e.g. dirt, developer solution) can not be readily
removed with a camel hairbrush or canned air, use wWHAT
liquid screen
cleaner
55
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required:
* 4. After cleaning with manufacturer approved cleaners, screens should
be allowed to WHAT, before returning the cassette to
use
to air-dry, standing vertically
56
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required:
CORRECTIVE ACTION:
If the screen shows signs of WHAT, it should be
replaced. All corrective actions must be completed within 30 days,
documented and records retained for a minimum of 2 years
cracking, fading or discoloration
57
IN Screen-Film Contact/Cassette Integrity/Screen Cleanliness,
Screen Cleanliness Equipment Required:
CORRECTIVE ACTION:
If the screen shows signs of cracking, fading or discoloration it should be
WHAT. All corrective actions must be completed within 30 days,
documented and records retained for a minimum of 2 years
replaced
QAQC
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