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x-ray week 4
review
| Question | Answer |
|---|---|
| Unit used to indicate total quantity of x-rays in an exposure | mAs |
| How do you correct an overexposed radiographic image? | decrease mAs |
| How do you correct an underexposed radiographic image? | increase mAs |
| The overall darkness or "blackness" within a radiographic image | density |
| The difference in density between adjacent portions of the image. | radiographic contrast |
| Generalized unwanted exposure on the image. | fog |
| A variation in size or shape of the image as compared with the subject it represents. | distortion |
| Another name for size distortion. | magnification |
| Distance between the body part and the IR | object image distance (OID) |
| A change from small focal spot to large focal spot results in | decreased image sharpness |
| An increase in OID will result in | increased magnification |
| With a large OID, reduction of magnification is accomplished by | increasing the SID |
| If a radiographic image is blurred due to motion, which exposure factor should be used to correct this problem | decrease in exposure time (seconds) |
| The first step to reduce voluntary patient motion | communicate with the patient |
| Effect of magnification on recorded detail | decreases recorded detail |
Created by:
Debra.Agee
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