NDLI: Fast Low-Dose Reconstruction From Truncated Data in Dental CT

Content Provider	IEEE Xplore Digital Library
Author	Xianchao Wang Guoen Hu Bin Yan Yu Han Lei Li Shanglian Bao
Copyright Year	1963
Abstract	To reduce the radiation dose in dental computed tomography (CT), backprojection-filtration (BPF) algorithm is the preferred choice as it can reconstruct images from truncated data within limited scanning angle, thereby reducing radiation dose and avoiding irradiation to the brain. However, the integral interval of backprojection is variable for every PI-line which causes the calculation efficiency and parallel performance to be low. In this paper, the tent BPF method (T-BPF) was developed, which was performed by firstly rearranging the cone-beam data to tent-like parallel-beam data, and then applying the proposed BPF-type algorithm to reconstruct images from the rearranged data. T-BPF turns the variable integral interval of backprojection into fixed integral interval, which means the reconstruction efficiency and the parallel performance of T-BPF are improvements over those of the original BPF algorithm. The experiments of numerical simulation and real data reconstruction show that the reconstruction efficiency of T-BPF is faster than the original BPF algorithm and the FDK algorithm in the case of comparable reconstruction quality. The results demonstrate that the proposed T-BPF is good at achieving fast low-dose reconstruction from truncated projection data in dental CT.
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	174
Ending Page	181
Page Count	8
File Size	4904968
File Format	PDF
ISSN	00189499
Volume Number	60
Issue Number	1
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 Band pass filters Computed tomography Dentistry Detectors Approximation algorithms Algorithm design and analysis truncated data BPF algorithm dental CT image reconstruction rebinning
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

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