FREE RADIOLOGY AND STUDY GAMES ABOUT DIGITAL

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FREE RADIOLOGY AND STUDY GAMES ABOUT DIGITAL

FINAL EXAM

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -101 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Receptor blur is the result of:

Answer:

Imaging Equipment Question 2: DQE is a measure of image:

Answer:

Quality Question 3: Using a workstation to cover the unexposed area of an image with a black border is

called:

Answer:

Shuttering Question 4: Which of the following would lead to decreased density on an analog (film-based) image?

Answer:

Low development temperature

Question 5: Inappropriate brightness on a digital image can be caused by:

Answer:

Poor collimation, Incorrect menu selection, Poor Positioning

Question 6: A radiology information system (RIS) can do which of the following?

Answer:

Collect and display orders

Question 7: How many shades of gray does an 8-bit image display?

Answer:

256 Question 8: Which of the following is a visual cue that a digital image is underexposed?

Answer:

Increase in image noise Question 9: Scatter radiation is especially difficult to interpret during histogram analysis when it

occurs:

Answer:

Outside the collimated field Question 10: CCDs are suitable for low-dose imaging because they:

Answer:

Respond to low light levels Question 11: A firewall controls traffic between a single computer and a network in an

environment with no:

Answer:

Security Question 12: For flat-panel detectors, the spatial resolution is determined by the size of the:

Answer:

DELs

Question 13: In CRT display technology, an electron gun fires electrons at a(n):

Answer:

Fluorescent Screen Question 14: Cassettes that are specially designed for scoliosis exams contain how many PSP plates?

Answer:

2 Question 15: A lead apron in the exposure field may cause an exposure indicator miscalculation

because the image data could be misrecognized as:

Answer:

Gross underexposure Question 16: Workstations designated as "diagnostic workstations" typically are used only by:

Answer:

Radiologists Question 17: To accurately display the gray scale in a radiograph, the display monitor must be able to demonstrate at least how many distinct shades of gray?

Answer:

256 Question 18: Pixel pitch describes:

Answer:

How close the pixels are to each other

Question 19: Prefetching generally occurs at what time of day?

Answer:

During the night Question 20: As the pixel size decreases, the recorded detail:

Answer:

Increases

Question 21: Digital artifacts that are caused by processing:

Answer:

Appear along the entire axis of the image and on every imaging plate.Question 22: When an image is obtained on several imaging plates that need to be combined

later into one image, the process is referred to as:

Answer:

Stitching Question 23: Radiographic blur can be caused by:

Answer:

Patient Motion and Geometric Factors Question 24: The brightness of a display monitor is referred to as:

Answer:

Luminance Question 25: When a digital fluoroscopy unit's magnification button is used, the resulting

magnification is due to a decrease in the size of the:

Answer:

Input Phosphor Question 26: During processing, image data is released from a PSP receptor after the receptor

is struck by:

Answer:

Red Laser Beam Question 27: Scanning the bar code on a PSP plate is extremely important because it links the

image data with the correct:

Answer:

Patient Question 28: The software standards used for the exchange of text-based electronic information

in health care are known as:

Answer:

HL7