If the pixel size is 0.03 mm, what is the calculated spatial frequency?

To calculate the spatial frequency in line pairs per millimeter (lp/mm) from pixel size, you can use the formula:

Spatial Frequency (lp/mm) = 1 / (2 × Pixel Size in mm).

Given a pixel size of 0.03 mm, the calculation would be as follows:

1. Substitute the pixel size into the formula:

Spatial Frequency = 1 / (2 × 0.03 mm)

2. Calculate:

Spatial Frequency = 1 / 0.06 mm = 16.67 lp/mm.

This value represents the highest spatial frequency that the digital radiography system can resolve, indicating fine details in the image based on the size of the individual pixels.

In summary, the correct choice of 16.67 lp/mm accurately reflects the relationship between pixel size and spatial frequency, demonstrating how smaller pixels can resolve higher detail in radiographic images.