FREE AND STUDY GAMES ABOUT 221 EXAM QUESTIONS

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FREE AND STUDY GAMES ABOUT 221 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -74 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: What is the largest circuitry board inside the computer?

Answer:

motherboard Question 2: The insulating layer in a CCD chip is the:

Answer:

Silicon dioxide layer

Question 3: The amount of tissue included in an image is called

Answer:

Field of View (FOV)

Question 4: How many bits are in a single byte?

Answer:

8

Question 5: T or F: if grid lines are present and run parallel to the scanning laser, the image will not have the moire pattern present

Answer:

false

Question 6: Contrast resolution is a digital system's ability to

Answer:

show small differences in gray values

Question 7: Which detector converts xray energy directly into electrons?

Answer:

a-Se with TFT Question 8: The difference between the actual exposure and the target exposure is known as

the:

Answer:

KTGT

Question 9: Which of the following are not considered scintillators?

Answer:

a-Se Question 10: T or F:Shuttering the digital image will reduce the exposure to the patient.

Answer:

false Question 11: . Which radiographic image capture method uses an X-ray absorber material coupled with a thin film transistor, complementary metal oxide semiconductor, or a charge-coupled device (CCD) to form the digital radiographic image?

Answer:

FPD Question 12: Which of the two technologies, CCDs or CMOS, is more susceptible to noise, has a lower light sensitivity, uses very little power, and is inexpensive to manufacture?

Answer:

CMOS

Question 13: What keeps the radio frequencies generated within the computer electronics from interfering with outside devices?

Answer:

the case Question 14: T or F The best component in a digital system will determine the resolution in a digital image.

Answer:

false Question 15: Which company was the first to introduce PSP imaging commercially in the United States?

Answer:

Fuji

Question 16: Which of the following are types of computer mice?

Answer:

infrared, mechanical, and optical Question 17: The number of electron/hole pairs is related to the amount of:

Answer:

light absorbed Question 18: After processing the image, strange artifacts are present that look metallic but are not present on the patient or table. Which of the following could be the cause of these artifacts?

Answer:

cassette was backward Question 19: T or F:Digital systems are less sensitive to scatter radiation than film/screen systems.

Answer:

false

Question 20: T or F:The look-up table that is used to determine the brightness and contrast of an image is unique for each anatomic part.

Answer:

true Question 21: T or F: Dynamic range is the ability of a digital imaging system to respond to varying levels of exposure.

Answer:

true Question 22: Which type of absorbing material requires a capacitor as the storage element?

Answer:

a-Se and Photoconductor Question 23: When the imaging plate is irradiated, stimulated electrons enter the _____ layer.

Answer:

active Question 24: T or F: The shape of the histogram is anatomy specific

Answer:

True

Question 25: Too little mAs can cause which artifact?

Answer:

Quantum mottle Question 26: When xrays strike a photostimulable phosphor material, ______ is released.

Answer:

light Question 27: A solid chemical element or compound doped with impurities that make it highly conductive is known as a

Answer:

semiconductor