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. Author manuscript; available in PMC: 2012 Sep 21.
Published in final edited form as: Phys Med Biol. 2011 Aug 18;56(18):5877–5888. doi: 10.1088/0031-9155/56/18/007

Figure 4.

Figure 4

The results of our spatial resolution characterization using a Cobalt-57 source aligned with a 116 micron slit. (a) A slit image with a box encompassing three strips where FWHMs were measured along the vertical axis. (b) A line profile constructed from the oversampled slit images centered at the vertical line in (a). This oversampled line profile was fitted to a Gaussian curve and used to calculate the FWHM at one position. (c) A plot showing the FWHM measurements across the box region in (a). The arrow in (c) represents the position of the vertical line in (a).