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. Author manuscript; available in PMC: 2015 Sep 20.
Published in final edited form as: Appl Opt. 2015 Jun 20;54(18):5610–5618. doi: 10.1364/AO.54.005610

Fig. 3.

Fig. 3

The measurement of MTF of the X-ray imaging system with the test chart at 15 keV. (A) Radiogram of test chart, and each number shows the pitch of line and space patterns which corresponding to spatial resolution. (B) the MTF from (A).