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. Author manuscript; available in PMC: 2017 Jul 14.
Published in final edited form as: Neurosurg Focus. 2016 Sep;41(3):E13. doi: 10.3171/2016.7.FOCUS16181

FIG. 4.

FIG. 4

USAF-1951 test target (left) showing the area of imaging interest outlined in red, and conventional microscopic imaging of the laminated test chart used during our experiments (right). Note that the diminished quality of the right image with a target size of 6.5 mm is attributable to our printer limitations.