Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
RAD201 FINAL
| Question | Answer |
|---|---|
| Total filtration of _______________________ for fixed x-ray units operating above 70 kVp is the regulatory standard. | 2.5-mm aluminum equivalent |
| In standard image intensification fluoroscopy, an x-ray beam half-value-layer (HVL) of 3 to 4.5 mm aluminum is considered acceptable when kVp ranges from | 80 to 100 |
| Most fluoroscopic examinations employ a range of _____________ kVp for adult patients, depending on the body area being examined. | 75 to 110 |
| Luminance is determined by measuring the concentration of light | over a particular field of view. |
| When generator settings are changed from one mA and time combination to another, the most that linearity can vary is | 10% |
| When using digital fluoroscopy systems, making use of the last image hold feature can | be an effective dose reduction technique. |
| In digital radiography the number of different shades of gray that can be stored in memory and displayed on a computer monitor is termed | grayscale |
| When obtaining a dorsoplantar projection of a foot, which of the following types of filters should be used to provide a greater uniform density of the anatomy? | Wedge Filter |
| During a radiographic examination, which of the following combinations of technical exposure factors reduce patient radiation dose? | Higher kVp, lower mAs |
| Which of the following is frequently a problem in diagnostic pediatric radiography? | Patient motion |
| A blotchy radiographic image that results when an insufficient quantity of x-ray photons reaches the image receptor is called | quantum noise, or mottle. |
| ________________________ are the sensing devices most often used to measure skin dose directly. | Thermoluminescent dosimeters |
| In the event that a pregnant patient is inadvertently irradiated | the radiation safety officer or the medical physicist should perform the calculations necessary to determine fetal dose. |
| Studies of groups such as the atomic bomb survivors of Hiroshima have shown that damage to the newborn is unlikely for doses below | 0.2 Gy |
| Which of the following must always be the first step in protection of the reproductive organs? | Adequate and precise collimation of the radiographic beam to include only the anatomy of interest |
| Which of the following procedures results in the lowest radiation effective dose to the patient? | Dual energy X-ray absorptiometry |
| Which of the following is another term for use factor (U)? | Beam direction factor |
Created by:
McKenna0410