TY - GEN
T1 - Correction of left ventricle strain signals estimated from tagged MR images
AU - Khalil, Mina E.
AU - Fahmy, Ahmed S.
AU - Osman, Nael F.
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - Strain measurement is a quantity used for assessing the regional function of the left ventricular (LV) of the heart. They are computed by tracking the motion of the non-invasive, virtual tags in the cardiac muscle with time. Tracking these tags gives information for each region of the cardiac muscle by quantifying its deformation during contraction (systolic period) and relaxation (diastolic period). However, these strain measurements suffer from inaccuracies caused by the degradation of the tags and the image quality. In this work, numerical simulations are used to investigate the factors contributing to the error in measurements. An empirical model for the estimated strain values is deduced and presented. In addition, a correction method for the measurement errors is proposed based on the empirically-deduced model. The method was validated on real data, and showed potential enhancement by reducing the errors in strain measurements.
AB - Strain measurement is a quantity used for assessing the regional function of the left ventricular (LV) of the heart. They are computed by tracking the motion of the non-invasive, virtual tags in the cardiac muscle with time. Tracking these tags gives information for each region of the cardiac muscle by quantifying its deformation during contraction (systolic period) and relaxation (diastolic period). However, these strain measurements suffer from inaccuracies caused by the degradation of the tags and the image quality. In this work, numerical simulations are used to investigate the factors contributing to the error in measurements. An empirical model for the estimated strain values is deduced and presented. In addition, a correction method for the measurement errors is proposed based on the empirically-deduced model. The method was validated on real data, and showed potential enhancement by reducing the errors in strain measurements.
KW - Left ventricle regional function
KW - Strain
KW - Tagged MR
UR - http://www.scopus.com/inward/record.url?scp=79956260082&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79956260082&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-13681-8_65
DO - 10.1007/978-3-642-13681-8_65
M3 - Conference contribution
AN - SCOPUS:79956260082
SN - 364213680X
SN - 9783642136801
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 559
EP - 567
BT - Image and Signal Processing - 4th International Conference, ICISP 2010, Proceedings
T2 - 4th International Conference on Image and Signal Processing, ICISP 2010
Y2 - 30 June 2010 through 2 July 2010
ER -