Using the provided relationship, calculate spatial frequency when the pixel size is 0.04 mm.

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Multiple Choice

Using the provided relationship, calculate spatial frequency when the pixel size is 0.04 mm.

Explanation:
Spatial frequency measures how many line pairs appear per millimeter, and in imaging the highest resolvable frequency is the Nyquist limit, which is half the sampling rate. With pixel size acting as the sampling interval, the Nyquist spatial frequency is 1/(2 times the pixel size). So, for a pixel size of 0.04 mm, the calculation is 1/(2 × 0.04) = 1/0.08 = 12.5 lp/mm. This is the maximum frequency that can be represented with that pixel size. Higher frequencies would require smaller pixels, while much lower frequencies correspond to much larger pixel sizes.

Spatial frequency measures how many line pairs appear per millimeter, and in imaging the highest resolvable frequency is the Nyquist limit, which is half the sampling rate. With pixel size acting as the sampling interval, the Nyquist spatial frequency is 1/(2 times the pixel size). So, for a pixel size of 0.04 mm, the calculation is 1/(2 × 0.04) = 1/0.08 = 12.5 lp/mm. This is the maximum frequency that can be represented with that pixel size. Higher frequencies would require smaller pixels, while much lower frequencies correspond to much larger pixel sizes.

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