CR- Bushong Ch. 15
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Analog vs. digital
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| The laser light used in CR has a ............. wavelength than the emitted light. | show 🗑
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| Which of the following can be eliminated during switching from film-screen to CR? a- process image b- reload cassette c- repeat examination d- perform examination | show 🗑
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| An electron is described as being metastable: | show 🗑
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| show | a- laser light (focused/high intensity vs. x-ray that has weak and strong)
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| show | b- laser light (because its finely focused intense light)
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| PSP image receptors are effective because: | show 🗑
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| show | 8 hours
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| As a descriptor of a PSP, the term turbid refers to an appearance that is: | show 🗑
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| show | true
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| show | Expose the image receptor to intense white light
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| show | exposed to x-rays
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| show | exposed to light
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| show | shorter
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| show | mechanical
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| spacial resolution in CR is principally determined by: | show 🗑
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| show | the laser
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| How does the CR reader maintain the laser beam as a circle? | show 🗑
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| show | a- ADC (analog-to-digital converter)
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| The x-ray capture element of a CR imaging plate is the: | show 🗑
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| The characteristic curve of a CR imaging plate is described as: | show 🗑
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| An advantage of CR over screen-film radiography, regardless of the type of examination, is the relatively constant: | show 🗑
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| Patient radiation dose reduction in CR is limited by: | show 🗑
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| Which is less important (kVp or mAs) when CR is compared with screen-film radiography? | show 🗑
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| True/False: Fewer repeats is an advantage of CR over screen-film radiography | show 🗑
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| show | 10,000 shades of grey
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| Screen-film radiography allows for the display of about how many shades of grey? | show 🗑
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| show | Mechanical defects, Optical defects, Computer defects
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| What types of mechanical defects can occur? | show 🗑
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| show | Laser intensity control, scatter of stimulating beam, light quanta emitted by screen, light quanta collected
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| show | Electronic noise, inadequate sampling, inadequate quantization
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| show | True
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| show | True- can use same table and tube
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| True/False: The imaging plate (IP) does not contain an intensifying screen | show 🗑
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| What are the layers of the PSP screen? | show 🗑
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| show | BaFBr:Eu or BaFI:Eu
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| show | because the color of the light emitted is dependent on the atomic structure of the phosphor and ultimately the binding energy of the outer shell electron
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| show | direct
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| show | False: it is polychromatic; producing many different wavelengths generally colors within the blue/violet region
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| True/False: Stimulating light is monochromatic. | show 🗑
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| Infrared light has .......... frequency and ............ wavelength | show 🗑
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| show | high frequency and short wavelength
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| show | diameter of laser beam and size of PSP
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| which layer of the PSP plate sends light in a more forward direction when released from the reader? | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
rachelreilly
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