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Proceedings Paper

The effect of source position accuracy on image quality in helical MDCT 3D image reconstruction
Author(s): Amar Dhanantwari; Qiu Wang; Nirmal Soni
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Paper Abstract

Image reconstruction in helical CT assumes that the source position at which each view is acquired is accurately reported to the image reconstruction algorithm. However, in practical situations this is not always the case. Hardware, instrumentation and bandwidth limitations along with manufacturing tolerances limit the accuracy at which source positions may be recorded. This study simulates scans under the conditions of positional reporting errors in combination with errors in the time moments at which positions are reported. The resulting image quality is evaluated and the deviations from images obtained under ideal conditions are characterized using pixel to pixel differences and mutual information between image pairs.

Paper Details

Date Published: 3 March 2012
PDF: 7 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83132D (3 March 2012); doi: 10.1117/12.911288
Show Author Affiliations
Amar Dhanantwari, Philips Healthcare (United States)
Qiu Wang, Cornell Univ. (United States)
Nirmal Soni, Philips Healthcare (United States)

Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)

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