NDLI: Stable and Robust Geometric Self-Calibration for Cone-Beam CT Using Mutual Information

Content Provider	IEEE Xplore Digital Library
Author	Muders, J. Hesser, J.
Copyright Year	1963
Abstract	We present a novel geometric calibration method for cone beam computed tomography, which is based on an iterative multiresolution 2-D-3-D image registration framework. Our technique does not require a dedicated calibration phantom or any other specific markers inside the scanned object, so that the geometric parameters can be computed online from the acquired data itself. In contrast to existing registration-based calibration methods, our approach uses the mutual information for maximization of the similarity between the original and the reprojected projections. Furthermore, we incorporated a consistent volume update scheme into our algorithm that supports the registration to accurately retrieve the geometrical misalignment of the scanner. In addition to this, stochastic ray sampling in combination with forward and backprojection operators implemented on the graphics card make the overall runtime comparable to current registration-based approaches. However, we can reach as accurate results as the current phantom-based techniques. Our results will show that our algorithm converges stably to the correct solution, that it is robust against projection noise and that it is independent of the underlying system geometry. It can be applied to circular and to helical trajectories with arbitrary cone angles. Moreover, our studies on simulated and on real data demonstrate that our algorithm can deal with arbitrary imaging objects.
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	202
Ending Page	217
Page Count	16
File Size	5113184
File Format	PDF
ISSN	00189499
Volume Number	61
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Calibration Detectors Image reconstruction Computed tomography Phantoms Optimization Image registration X-ray tomography computed tomography image reconstruction image registration mutual information (MI) nondestructive testing projection algorithms reconstruction algorithms volume measurement
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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