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qa class

qa and qc

Question	Answer
What does the CARE acronym stand for?	consistency, accuracy,responsibility, excellence
How the customer feels about a product based on previous experience or outside influences is ___________ quality.	expected
How the customer feels regarding the quality of a good or service they have used is __________ quality.	perceived
___________ quality is based on data and stats	actual
The rule that explains that the process or system cause 85% of the problem and people or personnel within the process or system cause 15% of the problem	85/15 rule
In regards to QA the primary objective is enhancing patient care and the focus is to achieve and maintain a certain level of quality...T or F	True
Quality ________ of a total quality system focuses on technical elements and equipment	control
Any tech can perform a level ____ Quality control A physicist can perform a level ________ Quality control A tech with extra training can perform a level ____ Quality control	1,3, and 2
individual or entity who furnishes goods or services	supplier
information or knowledge necessary to achieve desired outcome	input
desired outcome or products that satisfy customer	output
means or activity used to achieve desired outcome	action
individuals or groups from within organization that needs or wants desired results	internal customer
individuals or groups from outside organization that needs or wants desired results	external customer
expected quality is the level of quality that the professional has the least effect on....T or F	true
mean, median or mode? mathematical average of values	mean
mean, median, or mode? point where half of values are above and half are below	median
mean, median, or mode? value that occurs most often	mode
risk analysis is identifying potential risks to patients, emplyees, students, and visitors...t or f	true
key concepts of an effective risk management program include: risk analysis, written policies and procedures, employee education, periodic inspection, and record keeping...t or f	true
name 5 methods of reducing patient exposure during exams	high kvp and low mas, collimation, shielding, avoiding repeats, and filtration
direct capture converts photons into an electric charge...t or f	true
indirect converts x rays to visible light then the light to an electric charge...t or f	true
pre processing works with ______data and depends on the modality and corrects for system irregularities such as dead pixels or dark noise	raw
post processing does not alter _____ data but can aid in diagnosing by allowing window adjustments, etc.	stored
Is there a standard accepted quality control process for digital imaging?	no not yet
test done with manufacturer phantom that confirms the sensitivity calibration is consistent with baseline	relative sensitivity
test done with manufacturer phantom that evaluates uniformity of brightness	uniformity or shading test
test done with manufacturer phantom that measures contrast resolution capabilities of monitors, processor, hard copy printers	contrast evaluation
test done with manufacturer phantom that measures the spatial resolution capability of the cr reader optics, x ray tube, and hard copy printer	spatial accuracy or sharpness
test done with manufacturer phantom that evaluates the vertical and horizontal performance of cr reader laser and optic and hard copy printer	laser jitter
test done with manufacturer phantom that confirms cr reader has erased plate completely	erasure
test done with manufacturer phantom that evaluates for noise, artifacts, or monitor degradation	image noise test
test done with manufacturer phantom that ensures the accuracy of workstation measurement tools and hard copy printer software	accuracy and ,measurement tools
test done with manufacturer phantom that measures cr reader system linearity	system linearity
repeat analysis is beneficial for equipment qc because it allows us to see if a specific problem is reoccurring...t or f	true
_______ flouro keeps going until we stop it	continuous
________flouro is done in bursts shots	pulsed
A slow scan allows for more detailed imaging hence the doubling of image resolution...t or f	true
why do we want PACS to be qc'd?	so we don't lose data through loss or damage
Where would you find a Primary display device? A Secondary?	primary- reading room secondary- tech work room
Reproducibility of Exposure and same technical factors should always produce the same radiation output Testing requires measuring output with detector at same technical factors. Acceptable variation is ____%	5
Radiation Output measures amount of radiation exposure per mAs of technique and units are either mR/mAs or μCkg-1/mAs...t or f	true
Radiation Output :similar types of x-ray generators and tubes within a department should emit the same values- States and TJC require the posting of this value to ensure no over exposure at fixed tecnique...t or f	true
Radiation Output: Determined using radiation detector and making exposure at 10 mAs -current and previous values are compared- acceptable variance is _____%	10
Minimum HVL at 80 kVp is _____mm aluminum equivalent	2.3
Radiation Quality/Filtration is determined by using a radiation detector and making exposures at ______kVp adding aluminum filters in ___ mm increments	80;1
KVP can be determined by using a special test cassette (Wisconsin test cassette) or a digital kVp meter t or f	true
This test determines whether or not the kVp value on the control console corresponds with the maximum energy of the actual x-ray beam	kvp
Exposure time directly affects the total quantity of radiation emitted from an x-ray tube-can be performed by using either the spinning top test or a digital timer...this test is the _____ test	timer
when should the timer test be done?	annually or if problems arise
timer test variance for under 10 ms....	+-20%
timer test variance over 10 ms....	+-5%
what test says the same mAs should produce the same radiation output regardless of mA and time selected and utilizes a radiation detector and exposures using same mAs but different mA and time stations?	Reciprocity
Reciprocity test variance is _____%	10
what test says sequential change in mAs should produce the same sequential change in radiation output- involves making exposures of a radiation detector at mAs values that are double that of previous exposure?	linearity
linearity test acceptable variance is ____ %	10
This test assures that light field of collimator is the same area struck by x-rays	Light Field- Radiation Field Congruence
Light Field- Radiation Field Congruence can be tested doing the 8 penny test or collimator test tool....t or f	true
Light Field- Radiation Field Congruence acceptable variance is + -____%	2
IR field alignment is determined with collimators equipped with Positive Beam Limitation (PBL)...t or f	true
Variation between the x-ray field and image receptor size must be within ± 3% of the SID for the IR field alignment test...t or f	true
For beam/ bucky alignment evaluation includes perpendicularity and x-ray beam/bucky tray alignment. The acceptable variance is _____%	1
For beam/ bucky alignment testing it can be performed using either a beam alignment tool or the washer or coin method....t or f	true
SID indicator testing can be performed with a tape measure or the triangular method- acceptable variation is ______%	2
AEC Exposure consistency with various kVp test acceptable variance is ____%	10
System should maintain exposure level with any changes in mA or kvp in AEC Exposure consistency with various kVp...t or f	true
AEC Exposure consistency with various kVp testing involves making a series of exposures of a homogenous phantom at different mA or kvp stations. Images should all be the same....t or f	true
in this test each detector or sensor should function identically to all other detectors testing involves exposures of a homogenous phantom at each of the sensors available on unit	Consistency with AEC detectors
in this test density selector should allow for changes in radiation exposure of 25% to 30% for each increment	aec density control function
aec density control functiontesting involves a series of exposures of a homogenous phantom at each of the density selector options setting should produce an image 25% to 30% greater than the previous setting...t or f	true

Created by: jackie.winne

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