CatSim: a new computer assisted tomography simulation environment

Bruno De Man; Samit Basu; Naveen Chandra; Bruce Dunham; Peter Edic; Maria Iatrou; Scott McOlash; Paavana Sainath; Charlie Shaughnessy; Brendon Tower; Eugene Williams

doi:10.1117/12.710713

21 March 2007 CatSim: a new computer assisted tomography simulation environment

Bruno De Man, Samit Basu, Naveen Chandra, Bruce Dunham, Peter Edic, Maria Iatrou, Scott McOlash, Paavana Sainath, Charlie Shaughnessy, Brendon Tower, Eugene Williams

Author Affiliations +

Proceedings Volume 6510, Medical Imaging 2007: Physics of Medical Imaging; 65102G (2007) https://doi.org/10.1117/12.710713
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

We present a new simulation environment for X-ray computed tomography, called CatSim. CatSim provides a research platform for GE researchers and collaborators to explore new reconstruction algorithms, CT architectures, and X-ray source or detector technologies. The main requirements for this simulator are accurate physics modeling, low computation times, and geometrical flexibility. CatSim allows simulating complex analytic phantoms, such as the FORBILD phantoms, including boxes, ellipsoids, elliptical cylinders, cones, and cut planes. CatSim incorporates polychromaticity, realistic quantum and electronic noise models, finite focal spot size and shape, finite detector cell size, detector cross-talk, detector lag or afterglow, bowtie filtration, finite detector efficiency, non-linear partial volume, scatter (variance-reduced Monte Carlo), and absorbed dose. We present an overview of CatSim along with a number of validation experiments.

Citation Download Citation

Bruno De Man, Samit Basu, Naveen Chandra, Bruce Dunham, Peter Edic, Maria Iatrou, Scott McOlash, Paavana Sainath, Charlie Shaughnessy, Brendon Tower, and Eugene Williams "CatSim: a new computer assisted tomography simulation environment", Proc. SPIE 6510, Medical Imaging 2007: Physics of Medical Imaging, 65102G (21 March 2007); https://doi.org/10.1117/12.710713

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