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RADT 465 Img Acq/Eva
| Question | Answer |
|---|---|
| Size distortion is also known as ______. | magnification (Lange PREP pg. 298) |
| Shape distortion is also known as ______. | elongation/foreshortening (Lange PREP pg. 298) |
| What are two types of size distortion or magnification? | OID and SID (Lange PREP pg. 298) |
| True/False: The alignment of the x-ray tube affects shape distortion. | True (Lange PREP pg. 298) |
| Recorded detail refers to the _____ or resolution with which anatomic structures are represented in the x-ray image. | clarity (Lange PREP pg. 298) |
| The term ____ of _____ refers to how well the recorded detail can be seen. | visibility, detail (Lange PREP pg. 299) |
| Resolution is expressed in _______. | lines pairs per millimeter (lp/mm) (Lange PREP pg. 299) |
| An increase in OID will (increase or decrease) magnification. | increase (Lange PREP pg. 301) |
| How many inches of SID will compensate for one inch of OID? | seven (Lange PREP pg. 301) |
| Recorded detail and magnification are ______ related. | inversely (Lange PREP pg. 301) |
| Structures farther from the IR will be distorted (more/less) than those closer to the IR. | more (Lange PREP pg. 303) |
| The (smaller/larger) the focal spot the better the spatial resolution. | smaller (Lange PREP pg. 305) |
| The two most effective ways to minimize voluntary motion on a radiograph are _____ _____ and _____ ______. | good communication, suspended respiration (Lange PREP pg. 309) |
| The best way to minimize involuntary motion is through utilizing the (shortest/longest) exposure time. | shortest (Lange PREP pg. 309) |
| The faster the intensifying screen then patient dose _____ and x-ray tube life _____. | decreases, increases (Lange PREP pg. 313) |
| Density describes the amount of _____ on an x-ray image or a part of the image. | balckness (Lange PREP pg. 317) |
| mAs is the product of the mA and exposure time in _____. | seconds (Lange PREP pg. 318) |
| Whenever you double the mAs you _____ the density of an image. | double (Lange PREP pg. 318) |
| What formula is used to calculate the new mAs when the SID changes? | density maintenance formula (Lange PREP pg. 320) |
| An increase in kV will result in an (increase/decrease) in image density. | increase (Lange PREP pg. 321) |
| What is the relation between screen speed and image sharpness/resolution? | inverse (Lange PREP pg. 322) |
| What are the four types of grids? | stationary, moving, parallel and focused (Lange PREP pg. 329) |
| What type of filtration is used to balance tissue densities when anatomic parts have very different thickness/absorption factors? | compensating filration (Lange PREP pg. 330) |
| Ascites, Rheumatoid arthritis, Paget disease, Pneumonia, Atelectasis, Congestive heart failure and Edematous tissue are all examples of what type of pathology? | additive (Lange PREP pg. 333) |
| Osteoporosis, Osteomalacia, Pneumoperitoneum, Emphysema, Degenerative arthritis are all examples of what type of pathology? | destructive (Lange PREP pg. 333) |
| The function of contrast is to make ____ visible. | details (Lange PREP pg. 339) |
| Digital imaging significantly improves dynamic range and _____ _____. | contrast resolution (Lange PREP pg. 341) |
| Short scale contrast has ___ subject contrast and ____ kV. | high, low (Lange PREP pg. 342) |
| Scatter radiation adds ____ to an image which impairs image detail visibility. | noise (Lange PREP pg. 346) |
| Image acquisition, image display and interpretation, image archival and retrieval and image communication are all features of ____. | PACs (Lange PREP pg. 366) |
Created by:
sadugan
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