Match the following choices with the correct question as they relate to radiographic grids.

-commonly ranges from 85-103 lpi
A)grid frequency
B)grid ratio
C)contrast improvement factor
D)focussed grid
E)air-gap technique
F)Moire effect
G)grid cut-off
H)convergence point
I)Hollis Potter
J)Gustav Bucky

Question

Match the following choices with the correct question as they relate to radiographic grids.

-commonly ranges from 85-103 lpi
A)grid frequency
B)grid ratio
C)contrast improvement factor
D)focussed grid
E)air-gap technique
F)Moire effect
G)grid cut-off
H)convergence point
I)Hollis Potter
J)Gustav Bucky

Quizplus · Accepted Answer

Grid frequency refers to the number of lead strips per inch (lpi) and commonly ranges from 85-103 lpi.

Answer: B
 Grid ratio refers to the relationship between the height of the lead strips and the distance between them, and is typically expressed as a ratio (e.g. 8:1, 12:1, etc.).

Answer: C
 Contrast improvement factor is a measure of how much the grid improves the image contrast by reducing scatter radiation.

Answer: D
 Focussed grids have lead strips that are angled to match the divergence of the x-ray beam and are used for higher energy x-rays or larger imaging areas.

Answer: E
 Air-gap technique involves increasing the distance between the patient and the detector instead of using a grid to reduce scatter radiation.

Answer: G
 Grid cut-off occurs when the grid absorbs too much primary radiation and results in a loss of image brightness and contrast.

Answer: H
 Convergence point refers to the distance where the lead strips in the grid come together and is important in determining the grid's effective focus distance.

Answer: I
 Hollis Potter is a physician and researcher known for her work in musculoskeletal imaging, particularly MRI and radiography of the hip.

Answer: J
 Gustav Bucky was a physicist and inventor who developed the first practical grid for radiography in 1913.

Match the Following Choices with the Correct Question as They