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RADT465-Image Eval
ARRT Registry Review Covering Image Production and Evaluation
| Question | Answer |
|---|---|
| What type of relationship do recorded detail and magnification have? | Inverse relationship (Lange Prep Pg. 301) |
| What percentage of change in mAs is needed for there to be a perceptible change in density? | 30% (Lange Prep Pg. 318) |
| Are pneumonia and ascites additive or destructive pathologic conditions? | Additive (Lange Prep Pg. 333) |
| What type of kV is required to produce short-scale contrast? | Low kv (high contrast) (Lange Prep Pg. 340) |
| What will the image result be if the center detector on AEC is used for a PA chest x-ray? | The image will be overexposed (Lange Prep Pg. 350) |
| How much should the kV be changed in a variable technique chart when the part thickness increases by 1 cm? | The kV should be increased by 2 for every 1 cm increase in part thickness (Lange Prep Pg. 352) |
| How are pixel size and resolution related? | Inversely (Lange Prep Pg. 356) |
| What are used to obtain the pixel data from PSP imaging plates? | Lasers (Lange Prep Pg. 359) |
| What materials are used to compose a thin-film transistor? | Glass with amorphous selenium (Lange Prep Pg. 364) |
| What happens to noise when SNR decreases? | Noise increases (Lange Prep Pg. 366) |
| Which system acquires, displays, and archives images? | PACS (Lange Prep Pg. 366) |
| True or False. Using a small focal spot improved recorded detail. | True (Lange Prep Pg. 308) |
| What are the two best methods to reduce voluntary motion? | Good communication and suspended respiration (Lange Prep Pg. 310) |
| Are intensifying screens used in digital imaging or screen-film imaging? | Screen-film imaging only (Lange Prep Pg. 321) |
| Which type of grid uses angled lead strips? | Focused grid (Lange Prep Pg. 324) |
| Which type of grid error is characterized by density loss at the periphery of the image? | Off-focus errors (Lange Prep Pg. 325) |
| What should be the humidity when storing film? | 40-60% (Lange Prep Pg. 381) |
| What will happen to film if it is stored to close to x-ray rooms or radionuclides and is exposed to ionizing radiation? | The film can be fogged (Lange Prep Pg. 381) |
| Chemical fog and guide show marks are what type of artifact? | Processing (Lange Prep Pg. 383) |
| Which film processing step removes processing chemicals and permits archival quality? | Wash (Lange Prep Pg. 386) |
| What temperature should the developer be maintained at? | 92-95 degrees Fahrenheit (Lange Prep Pg. 387) |
| How long can a PSP layer store its latent image before fading occurs? | 8 hours (Lange Prep Pg. 391) |
| True or False. Windowing does not affect the LUT. | False (Lange Prep Pg. 396) |
| Which type of windowing changes the image brightness? | Window level (Lange Prep Pg. 396) |
| How much underexposure and overexposure can CR/DR compensate for? | 80% underexposure and 500% overexposure (Lange Prep Pg. 367) |
| What does APR stand for and what is the purpose? | Anatomically programmed radiography - technologist selects anatomic part and projection, simultaneously selecting a processing algorithm (Lange Prep Pg. 408) |
| Are slow or fast screens used for extremities? | Slow screens (Lange Prep Pg. 407) |
| What will occur if two linear grids are superimposed? | Moiré effect (Lange Prep Pg. 413) |
| What kind of artifact will dust cause on a PSP during processing? | Striking artifact (Lange Prep Pg. 424) |
| What is the function of contrast? | Make details visible (Lange Prep Pg. 339) |
Created by:
marchuleta1
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