NDLI: Individually improved VCG synthesis

Content Provider	IEEE Xplore Digital Library
Author	Man, S. van Zwet, E.W. Maan, A.C. Schalij, M.J. Swenne, C.A.
Copyright Year	2009
Description	Author affiliation: Department of Cardiology, Leiden University Medical Center, The Netherlands (Man, S.; Maan, A.C.; Schalij, M.J.; Swenne, C.A.) \|\| Department of Medical Statistics, Leiden University Medical Center, The Netherlands (van Zwet, E.W.)
Abstract	Some prognostic electrocardiographic variables are to be measured in a vectorcardiogram (VCG). Normally, VCGs are synthesized from a standard 12-lead ECG by a transformation matrix. This occurs at the price of some information loss that can be defined as the error ε between the original ECG and reconstructed ECG (ECGr). Our assumption is that the larger ε, the less reliable the synthesized VCG. We attempted here to improve the VCG synthesis by reducing ε for each individual by using the Errors-In-Variables model. This technique minimizes ε by allowing 1–10% changes of the transformation matrix (M) that can be seen as the individualization of the conductive torso properties. We tested this procedure in 180 subjects, and used the squared correlation as a quality index for the resemblance of ECG and ECGr $(R^{2}ECG).$ On average, the $R^{2}ECG$ is markedly improved from 0.94 (inverse Dower) to 0.97 to 0.99 when we allow 1–10% adaptations of M. We conclude that improvement in the $R^{2}ECG,$ and thus individualizing M through our method, should give us a better and individualized VCG.
Starting Page	277
Ending Page	280
File Size	220529
Page Count	4
File Format	PDF
ISBN	9781424472819
ISSN	02766547
e-ISBN	9781424472826
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Computers in Cardiology(CinC)
Subject Keyword	Electrocardiography Torso Heart Cardiology Shape Statistics Humans Electrodes Computer errors Testing
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
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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