FREE RADIOLOGY AND STUDY GAMES ABOUT INTRO RAD

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FREE RADIOLOGY AND STUDY GAMES ABOUT INTRO RAD

PRO WEEK 3 EXAM QUESTIONS

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: During CR imaging plate processing, the laser frees trapped electrons allowing them to return to a lower energy state. This process is known as.

Answer:

photostimulated luminescence Question 2: Which type of system uses a a two-part process to convert incoming x-ray photons to an electronic digital signal

Answer:

indirect conversion

Question 3: Brightness gain is typically in the range of___.

Answer:

5,000 - 30,000

Question 4: The photocathode absorbs ___ and emits ____.

Answer:

light photons, electrons

Question 5: The primary limitation of fanned beam radiography is

Answer:

long scanning time.

Question 6: A photostimulable imaging plate includes a ___ layer

Answer:

Phosphor, conductor, protective

Question 7: Indirect DR (Digital Radiography)

Answer:

Thin film transitor or amorphous silicon convert electrons captured to light Question 8: In scanned beam radiography the spatial resolution is determined by the

Answer:

number of detectors.

Question 9: Photostimulable phosphor image receptors are effective because

Answer:

Metastable states are produced Question 10: Digital imaging could only be developed after advances were made in

Answer:

microprocessors.semiconductor memory.

Question 11: Photostimulable phosphor image receptors

Answer:

Can be fogged by background radiation

Question 12: Direct DR

Answer:

Uses amporphous Selenium as capture and coupling element

Question 13: During digital fluoro

Answer:

The x-ray beam is pulsed Question 14: The primary ___ occurs from the acceleration and focusing of the electron beam.

Answer:

brightness gain

Question 15: How many video monitors are required for digital fluoro

Answer:

Two

Question 16: Viewing the fluoro image in magnification mode increases

Answer:

(all of the above) Contrast resolution, spatial resolution and patient dose

Question 17: The window level controls

Answer:

image density Question 18: Fluoro for an air contrast barium enema is generally done at ___ kV.

Answer:

80-90

Question 19: Which of the following is used as a radiation detector in a DR

Answer:

Selenium (silicon)

Question 20: Spatial resolution is determined by the ratio of____to____.

Answer:

field of view, matrix size

Question 21: During the two part conversion system a _____ converts x-ray photons to light

Answer:

Scintillator Question 22: Scanned projection radiography was developed as a complement to____.

Answer:

computerized tomography.

Question 23: Electrons hit the ____ after exiting the anode.

Answer:

output phosphor

Question 24: The dynamic range determines the degree of___ in the image

Answer:

contrast resolution

Question 25: Fluoro was developed so that radiologist could view ____ images

Answer:

dynamic

Question 26: Digital radiography

Answer:

Requires computer processing

Question 27: _____ requires the largest matrix size.

Answer:

Computed radiography Question 28: The number of light photons emitted withing the image intensifier is ___ to the amount of x-ray photons exiting the patient.

Answer:

directly proportional