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Methods are presented for the quantification of spatial resolution in x-ray computed tomographic (CT) images. Model-dependent methods are derived and compared with model independent methods for computation of the Modulation Transfer Function (MTF). These techniques are applied to phantom images of point, line, edge, and ring discontinuities. The model-dependent methods utilize multiparameter fits of a two-dimensional model function to the image data. Model predictions are compared with results obtained in a model-independent way by numerical transformation of the data. Results of resolution measurements of an Imatron C-100 CT scanner at UCSF and a second experimental scanner at the UCSF Physics Research Laboratory are presented.
P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
October 2008,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
March 1993,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
February 1991,
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P A Assimakopoulos, and
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January 1979,
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P A Assimakopoulos, and
D P Boyd, and
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M J Lipton
March 2015,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
July 1987,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
December 2010,
Current problems in cardiology,
P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
August 2009,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
October 2003,
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P A Assimakopoulos, and
D P Boyd, and
W Jaschke, and
M J Lipton
May 1979,
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