Which of the following is recommended for increasing radiographic contrast while maintaining radiographic density?
A) Increase kVp and increase exposure time.
B) Decrease kVp and decrease exposure time.
C) Increase kVp and decrease exposure time.
D) Decrease kVp and increase exposure time.
D
Explanation: A) Decreasing kV produces longer wavelength x-rays, which results in a high-contrast radiographic image. Because decreasing kV also decreases the quantity of x-rays produced, the density may be maintained when decreasing kV by increasing exposure time.
B) Decreasing kV produces longer wavelength x-rays, which results in a high-contrast radiographic image. Because decreasing kV also decreases the quantity of x-rays produced, the density may be maintained when decreasing kV by increasing exposure time.
C) Decreasing kV produces longer wavelength x-rays, which results in a high-contrast radiographic image. Because decreasing kV also decreases the quantity of x-rays produced, the density may be maintained when decreasing kV by increasing exposure time.
D) Decreasing kV produces longer wavelength x-rays, which results in a high-contrast radiographic image. Because decreasing kV also decreases the quantity of x-rays produced, the density may be maintained when decreasing kV by increasing exposure time.
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