CRDR FINAL EXAM 6 QUESTIONS & ANSWERS 2024/2025
Refers to the space between the source and the image receptor - ANSWERS DISTANCE
___________________ has no effect on radiation quality but affects the exposure of the image receptor according to the inverse square law - ANSWERS DISTANCE
...
➤ Refers to the space between the source and the image receptor - ANSWERS➤ DISTANCE
➤ ___________________ has no effect on radiation quality but affects the exposure of the image
receptor according to the inverse square law - ANSWERS➤ DISTANCE
➤ In selecting a CR imaging cassette 2 factors are considered: - ANSWERS➤ TYPE
➤ SIZE
➤ Most manufacturers produce two types of imaging plates: - ANSWERS➤ STANDARD
➤ HIGH RESOLUTION
➤ ___________________ should be marked on the outside to indicate high resolution imaging plates -
ANSWERS➤ CASSETTES
➤ Limited to size range and are most often used for extremities, mammography, and other examinations
requiring increased detail - ANSWERS➤ HIGH RESOLUTION
➤ In _________________________________________, we are taught to select a cassette appropriate
to the size of the body part being image. CR cassette selection is the same but even more critical -
ANSWERS➤ CONVENTIONAL FILM/ SCREEN RADIOGRAPHY
➤ Images are displayed in matrix of ________________________ - ANSWERS➤ PIXELS
➤ The CR reader scans the imaging plate at a relatively constant frequency, about
_______________________________ - ANSWERS➤ 2000 x 2000 PIXELS
, ➤ Using the _______________________ possible for each examination results in the highest sampling
rate - ANSWERS➤ SMALLEST IMAGING PLATE
➤ A 2000 x 2000 matrix on an 8" x 10" cassette results in much smaller pixel size, thereby
____________________________ - ANSWERS➤ INCREASING RESOLUTION
➤ ____________________ are device for reducing the level of scatter radiation that reaches the image
receptor - ANSWERS➤ RADIOGPRAHIC GRIDS
➤ Carefully fabricated section of radiopaque material
(GRID STRIP) alternating with radiolucent
material (INTERSPACE MATERIAL) - ANSWERS➤ RADIOGRAPHIC GRIDS
➤ Placed between the patient and the image receptor - ANSWERS➤ RADIOGRAPHIC GRIDS
➤ The technique was first demonstrated in 1913 by Gustave Bucky - ANSWERS➤ GRID
➤ TYPES OF GRIDS
1.
2.
3.
4. - ANSWERS➤ PARALLEL GRID
➤ CROSSED GRID
➤ FOCUSED GRID
➤ MOVING GRID
➤ A stationary grid which he called as "____________________________" - ANSWERS➤
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