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RAD
xray tech flash
| Question | Answer |
|---|---|
| Biologic material irradiated under hypoxic conditions is | less sensitive than when irradiated under oxygenated conditions |
| The presence of ionizing radiation may be detected in which of the following ways? | Ionizing effect on air Photographic effect on film emulsion Fluorescent effect on certain crystals |
| Using fixed milliampere-seconds and variable kilovoltage technical factors, each centimeter increase in patient thickness requires what adjustment in kilovoltage? | Increase 2 kV |
| Causes of grid cutoff, when using focused reciprocating grids, include the following? | Inadequate SID |
| An unexposed and processed film will have a density of about | 0.1 |
| A drug's chemical name is called its | generic name |
| Filtration is added to the x-ray beam to | produce an x-ray beam with higher average energy |
| The source-to-table distance in fixed/stationary fluoroscopy must | be at least 15 in. |
| Guidelines for the use of protective shielding state that gonadal shielding should be used | if the patient has reasonable reproductive potential; when the gonads are within 5 cm of the collimated field |
| What is the approximate ESE for the average AP lumbar spine radiograph? | 350 mrad |
| Replacing 200-speed intensifying screens with 400-speed screens will | require the exposure to be cut in half. enable the radiographer to decrease the exposure time. |
| Electronic imaging terms used to indicate the intensity of radiation reaching the IR include | exposure index. sensitivity (S) number |
| An automatic exposure control device can operate on which of the following principles? | A photomultiplier tube charged by a fluorescent screen, A parallel-plate ionization chamber charged by x-ray photons |
| Which of the following is a measurement of dose to biologic tissue? | Rem (Sv) |
| Which of the following personnel monitoring devices used in diagnostic radiography is considered to be the most sensitive and accurate? | OSL dosimeter |
| The acceptable ESE for a PA chest is | 12–26 mR is the acceptable range |
| According to the NCRP, the pregnant radiographer's gestational dose-equivalent limit for a 1-month period is | 0.5 mSv |
| An optically stimulated luminescence dosimeter contains which of the following detectors? | Aluminum oxide |
| TLDs use | lithium fluoride crystals |
| ESE for the abdomen (radiation absorbed by the skin) | 375–698 mR |
| thoracic spine ESE | 290–485 mR |
| device converts electrical energy to mechanical energy? | Motor |
| converts mechanical energy into electrical energy | generator |
Created by:
MysticGemi5
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