NDLI: Improved 3D reconstuction of pacemaker leads

Content Provider	IEEE Xplore Digital Library
Author	Williams, B.B. Esthappan, J. Hoffmann, K.R.
Copyright Year	1997
Description	Author affiliation: Dept. of Radiol., Chicago Univ., IL, USA (Williams, B.B.)
Abstract	Recently, serious health risks to recipients of pacemakers due to the failure and fracture of structural pacemaker components has placed an emphasis on the need for methods of evaluating pacemaker components in vivo. In order to facilitate these evaluations, the authors have developed methods for determination of the in-vivo 3D positions of pacemaker leads during the entire heart cycle. Sequences of biplane images of patients with pacemakers were obtained at 30 frames/sec for each projection. The sequences usually included at least two heart cycles. After patient imaging, biplane images of a calibration object were obtained from which the biplane imaging geometry was determined. The centerlines of the leads were indicated manually for all acquired images. These lead data were interpolated temporally so that the temporal non-synchronicity of the image acquisition was overcome. Epipolar lines, generated from the calculated geometry, were used to adjust the temporally interpolated data based on known consistencies of simultaneously acquired images. The 3D positions of the leads were then calculated using the calculated geometry and point correspondences between leads in simultaneous projections using an epipolar technique. Calculated results indicate that an accurate estimate of the shapes and positions of pacemaker leads throughout the heart cycle can be determined, providing a reliable basis for the needed stress analysis.
Starting Page	854
Ending Page	856
File Size	267341
Page Count	3
File Format	PDF
ISBN	0780342623
ISSN	1094687X
DOI	10.1109/IEMBS.1997.757794
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pacemakers Image reconstruction Shape In vivo Interpolation Geometry Heart Image sequences Angiography Electric breakdown
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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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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