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Radt456protect
Question | Answer |
---|---|
Who works in a "controlled area"? | radiation workers Q&A CD |
What does the 10 day rule refer to? | One should not image a woman of child bearing age until 10 days after the onset of menstration. Q&A CD |
The collimator light must be within what percent of the SID to be accurate? | 2% Q&A CD |
What is the fetal dose limit for a pregnant radiographer for the entire gestation? | .5 rem Q&A CD |
Are life span shortening, carcinogenesis, and cataractogenesis late or early effects? | late Q&A CD |
T/F It is important to ask a female of child bearing age how many x-ray exams she has had in the past 12 months. | False Q&A CD |
What is the acceptable entrance skin dose for a PA chest? | 20 mR Q&A CD |
Will changing the exam from an 8:1 grid increase or decrease dose to the patient? | Decrease Q&A CD |
Where should the control dosimeter be stored? | Away from all sources of radiaion Q&A CD |
What is the NCRP's limit for annual occupational dose? | 50mSv or 5rem Q&A CD |
Biologic material is most sensitive to radiation exposure under what condition? | oxygenated Q&A CD |
WHat effects both the quantity and quality of the primary beam? | kV and HVL Q&A CD |
If the entrance dose is 320mR, what would the exposure be at 1m from the patient? | 0.32mR Q&A CD |
WHat are 3 pieces of fluoroscopic equipment that keep unnecessary radiaiton from the patient? | protective curtain, filtration, and collimation Q&A CD |
If a quantity of radiation is delivered over a short period of time, the effects will be ______ than if it were delivered over a long period of time? | greater Q&A CD |
Which type of cell is the least radiosensitive? | myocytes Q&A CD |
Which x-ray interaction is most responsible for patient dose? | photoelectric Q&A CD |
Which x-ray interaction involves partial transfer of the incident photon energy to the involved atom? | Compton Q&A CD |
How often should lead be fluoroscoped to check for cracks? | annualy Q&A CD |
Occupational exposure is most likely from which x-ray interaction? | Compton Q&A CD |
T/F Late effects have no threshold dose. | True Q&A CD |
The gradual decrease in exposure rate as an x-ray beam passes through an object. | attenuation Q&A CD |
What type of cell has the lowest radiosensitivity? muscle or nerve? | Nerve Q&A CD |
What is the annual TEDE limit for radiaion workers? | 50mSv Q&A CD |
T/F Room walls and floors are primary radiation barriers? | True Q&A CD |