A 3T MRI scanner used is tuned for proton imaging. For a given imaging sequence applied to image a patient's leg the gradient strength is 1 G/cm, FOV is 25 cm, matrix is 250x250. The patient has a titanium screw in their leg that causes a magnetic susceptibility change to the main magnetic field of 0.5 Gauss. How much shift is image position ( in pixels) will be seen in this part of the leg?

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