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Báo cáo hóa học: "Research Article Determination of Three-Dimensional Left Ventricle Motion to Analyze Ventricular Dyssyncrony in SPECT Images"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Determination of Three-Dimensional Left Ventricle Motion to Analyze Ventricular Dyssyncrony in SPECT Images | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 290695 9 pages doi 10.1155 2010 290695 Research Article Determination of Three-Dimensional Left Ventricle Motion to Analyze Ventricular Dyssyncrony in SPECT Images Marina de Sa Rebelo 1 Ann Kirstine Hummelgaard Aarre 2 Karen-Louise Clemmesen 2 Simone Cristina Soares Brandao 1 Maria Clementina Giorgi 1 Jose Claudio Meneghetti 1 and Marco Antonio Gutierrez1 1 Heart Institute InCor do Hospital das Clinicas da Faculdade de Medicina da Universidade de Sao Paulo Av. Dr. Eneas de Carvalho Aguiar 44 CEP 05403000 Sao Paulo Brazil 2 Department of Health Science and Technology Aalborg University Fredrik Bajers Vej 7D2 DK-9220 Aalborg Denmark Correspondence should be addressed to Marina de Sa Rebelo marina.rebelo@incor.usp.br Received 29 April 2009 Revised 31 July 2009 Accepted 16 September 2009 Academic Editor Joao Manuel R. S. Tavares Copyright 2010 Marina de Sa Rebelo et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. A method to compute three-dimension 3D left ventricle LV motion and its color coded visualization scheme for the qualitative analysis in SPECT images is proposed. It is used to investigate some aspects of Cardiac Resynchronization Therapy CRT . The method was applied to 3D gated-SPECT images sets from normal subjects and patients with severe Idiopathic Heart Failure before and after CRT. Color coded visualization maps representing the LV regional motion showed significant difference between patients and normal subjects. Moreover they indicated a difference between the two groups. Numerical results of regional mean values representing the intensity and direction of movement in radial direction are presented. A difference of one order of magnitude in the intensity of the movement on patients in .