3 March 2012 The effect of source position accuracy on image quality in helical MDCT 3D image reconstruction
Author Affiliations +
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Amar Dhanantwari, Amar Dhanantwari, Qiu Wang, Qiu Wang, Nirmal Soni, Nirmal Soni, "The effect of source position accuracy on image quality in helical MDCT 3D image reconstruction", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83132D (3 March 2012); doi: 10.1117/12.911288; https://doi.org/10.1117/12.911288
PROCEEDINGS
7 PAGES


SHARE
Back to Top