Term
| The radiographic image exhibits all the details of the anatomical part. |
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Definition
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Term
| Clinically, an excellent guidepost to image resolution is bony trabeculation. |
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Definition
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Term
| Quantum Mottle can enhance detail. |
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Definition
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Term
| Voluntary motion can be controlled with proper communication. |
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Definition
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Term
| Involuntary motion is best controlled with lower kVp. |
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Definition
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Term
| Digital image contrast is determined primarily by matrix size, pixel size, and gray scale bit depth. |
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Definition
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Term
| Spatial resolution is expressed in three dimensions of an image: the x axis, the y axis, and z axis. |
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Definition
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Term
| Quantum noise is background information that the image receptor receives. |
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Definition
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Term
| Digital imaging requires that the spatial resolution frequency signal be sampled once from each cycle. |
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Definition
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Term
| The major factor that limits photostimulable phosphor systems is the size of the detector element. |
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Definition
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Term
Recorded detail is
a. the degree of geometric sharpness
b. definition
c. the accuracy of the structural lines actually recorded in the radiographic image.
d. all of the above |
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Definition
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Term
| The unit of resolution is: |
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Definition
| line pairs per millimeter |
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Term
| Poor resolution is caused by unacceptable levels of: |
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Definition
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Term
| Which can obscure detail? |
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Definition
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Term
| Factors affecting recorded detail include: |
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Definition
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Term
| Resolution is improved when: |
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Definition
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Term
| Resolution is improved when |
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Definition
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Term
| Which radiograph exhibits the best detail? |
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Definition
| a PA chest radiograph for evaluation of the heart at 72in |
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Term
As focal spot size decreases,
a. unmbra is improved.
b. penumbra decreases
c. resolution increases
d.all of the above |
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Definition
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Term
| Slow film-screen combinations: |
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Definition
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Term
| Resolution will increase as _____ increases. |
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Definition
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Term
| The best method for controlling motion when the patient is unable to cooperate is to: |
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Definition
| maintain mAs, while decreasing time. |
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Term
| As a last resort, which human immobilizer is used to hold a patient in position? |
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Definition
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Term
| The_____ represents a depth to the information in the digital image: |
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Definition
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Term
| Which measures the accuracy of an image compared to the original object scale of 0 to 1? |
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Definition
| modulation transfer function |
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Term
| Calculate the penumbra for an image taken with a 1.0mm focal spot, at a 40" distance, and OID of 2". |
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Definition
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Term
| Calculate the penumbra for an image taken with a 2.0mm focal spot, at a 40" distance, and OID of 2". |
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Definition
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Term
| Calculate the penumbra for an image taken with a 1.0mm focal spot, at a 40" distance and OID of 5". |
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Definition
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Term
| Calculate the penumbra for an image taken with a 2.0mm focal spot, at a 72" distance, and OID of 1". |
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Definition
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Term
| Calculate the penumbra for an image taken with a 2.0mm focal spot, at a 72" distance, and OID of 6". |
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Definition
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