Abstract: Spatial resolution is substantially improved by simulating a system blur kernel including an angle variable in the forward projection during a predetermined iterative reconstruction technique. The iterative reconstruction acts as a deconvolution, which overcomes certain restrictions of system optics. In general, resolution is substantially improved with cone beam and helical data without a large increase in noise.
Type:
Grant
Filed:
January 10, 2012
Date of Patent:
September 16, 2014
Assignees:
Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
Inventors:
Alexander Zamyatin, Michael D. Silver, Daxin Shi