NDLI: Trade-Off Analysis Considering Tomogram Quality and Performance of a Parallel Computing Hardware Realization of Katsevich's Reconstruction Algorithm

Content Provider	IEEE Xplore Digital Library
Author	Nellesen, J. Weichert, F. Timm, C. Kerbitz, R.A. Tillmann, W.
Copyright Year	1963
Abstract	In this paper, the trade-off between the target variables tomogram quality and reconstruction time of an implementation of Katsevich's exact reconstruction algorithm for helical cone-beam computed tomography (CT) is analyzed. This is accomplished by means of an OpenCL-based, parallel and portable realization of Katsevich's algorithm. The detailed examination is carried out on a phantom object which is composed of cubes with different attenuation coefficients. For this phantom object, X-ray cone-beam projections are simulated with different helix trajectory parameters. From the simulated projection data sets 3D tomograms are reconstructed. The impacts of the helix parameters on the tomogram quality and the reconstruction time are measured. Moreover, the speedup in dependence of the number of computing units on the OpenCL device is examined. To sum up the results: the tomogram quality increases monotonically with ascending number of projections while keeping the helix pitch fixed. A linear relationship between the overall runtime and the number of projections exists. The trade-off analysis between the tomogram quality and the reconstruction time proves that an optimum is reached if the criteria for the lateral and vertical sampling of the 3D space are fulfilled.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	3270
Ending Page	3281
Page Count	12
File Size	2281089
File Format	PDF
ISSN	00189499
Volume Number	60
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Detectors Computed tomography Graphics processing units Reconstruction algorithms Trajectory Approximation algorithms trade-off analysis GPGPU helical cone-beam tomography Katsevich algorithm OpenCL
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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