Xray Imaging Intensity

1. The problem statement, all variables and given/known data

Imagine a 10 cm thick slab of flesh. If your x-ray imager can reliably identify a 5% change in intensity from one location to another in an image, what is the smallest diameter bone you are going to be able to make detect in your x-ray image?

Absorption length of bone: 0.017 m

2. Relevant equations

I=I0e-μx

3. The attempt at a solution

I tried letting 0.05=e-μx letting 0.017m be μ. The correct answer is supposed to be 1.3 mm but I can’t seem to get that.

http://ift.tt/1sp7GfZ

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