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Rad QA - Test 2
actual test
| Question | Answer |
|---|---|
| State stautes require that general purpose radiographic units have a minimum total filtration of ___mm. | 2.5 |
| T or F; The xray field must coincide with the light field of the variable aperature light localizing collimator. | true |
| Misalignment of the collimated field must not exceed ___% of the source-to image receptor distance. | 2 |
| Distance indicators must be accurate to within ___% of the SID. | 2 |
| Centering indicators must be accurate to within ___% of the SID. | 1 |
| The distance from the bucky tray to the dot on the xray tbe housing indicating focal spot position is measured at 47 inches. The automatic distance indicator shows a distance of 48 inches. Is this acceptable? show work | Yes because it is within 2%. 48 - 47 / 48 = 1/48 = 2% |
| There are 3 tools that can be used to measure focal spot size. Name them | slit camera, pinhole, star pattern |
| Of the 3 tools in Question 6, which one is the standard for measurements of focal-spot size? | slit camera |
| Focal spot size can vary by + or - ____% | 50 |
| A variation in kVp of approximately ___% is necessary to affect image opitcal density and radiographic contrast. | 4 |
| The measured kVp should be within ___% of the indicated kVp. | 10 |
| Exposure timer accuracy should be within ___% of the indicated time the exposure times greater than 10ms. | 5 |
| Exposure timer accuracy should be within ___% of the indicated time the exposure times of 10ms or less. | 20 |
| If the phototimer fails, the back-up timer should terminate the exposures at ___ seconds or 600 mAs, whichever occurs first. | 6 |
| Many combinations of mA and exposure time produce the same mAs value. Exposure linearity must be within ___% for adjacent mA stations. | 10 |
| For exposure reproducibility, sequential radiation exposures should be resproducible to within ___%. | 5 |
| Intensifying screens should be cleaned not less than _____ | every other month |
| Intensifying screens should be cleaned using a cleaning solution supplied by ____ | manufacturer |
| Protective apparel should be fluoroscoped or xrayed ____ for defects. | annually |
| For normal operatin, the ESE rate shall not exceed ___ R/min | 10 |
| ESE of approximately ___ mR may be assumed for cassette spot film | check this |
| ESE of approximately ___ mR may be assumed for photofluorospot. | 100 |
Created by:
pspillman17