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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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