NDLI: Ultrafast 3D reconstruction for X-ray real-time tomography (RTT)

Content Provider	IEEE Xplore Digital Library
Author	Morton, E. Mann, K. Berman, A. Knaup, M. Kachelriess, M.
Copyright Year	2009
Description	Author affiliation: Rapiscan Systems Ltd, X-Ray House, Bonehurst Road, Salfords, Surrey, United Kingdom (Morton, E.; Mann, K.) \|\| Institute of Medical Physics (IMP), University of Erlangen-Nu¿rnberg, Henkestr. 91, 91052 Erlangen, Germany (Knaup, M.; Kachelriess, M.) \|\| Mercury Computer Systems, Chelmsford, USA (Berman, A.)
Abstract	Imaging complete objects in a tomographic manner in nearly real-time is of interest for many applications. One example is imaging of patients with a very high frame rate to be able to observe and study variations in the patients anatomy (e.g. in the heart or lung) with high temporal resolution. Another example is baggage inspection where the object is transported at speeds as high as 0.5 m/s. Here, reconstruction and subsequent threat detection must be completed before a bag reaches the switch in the baggage belt that redirects suspicious bags. The scope of this paper is a real-time CT system that does not require physically moving parts. This is achieved by using multi- focus x-ray sources and a number of detector rings surrounding the object. We briefly describe the scanner design and then concentrate on the signal processing pipeline of the scanner. Image reconstruction is driven by a cluster of cell blades and a highly performant backprojection algorithm that allows for full vectorization. Thereby, a continuous reconstruction of 240 to 480 images per second, each consisting of 768×768 pixels and receiving contributions from 384 to 768 focal spots, is achieved with a total of four cell processors. While the real-time tomograph is a dedicated luggage scanner the concept realized and validated is of highest interest for clinical CT, too. The possibility of defining arbitrary scanning sequences may yield further improvements in image quality regarding the scanning of moving objects or regarding dose-efficient scans with organ-dependent scan trajectories.
Starting Page	4077
Ending Page	4080
File Size	186140
Page Count	4
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402393
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction X-ray imaging High-resolution imaging Optical imaging Switches Computed tomography Signal processing algorithms Anatomy Heart Lungs
Content Type	Text
Resource Type	Article

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
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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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