کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5789229 1414304 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
ArticleLife & Medical SciencesSparse current source reconstruction in MCG
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
ArticleLife & Medical SciencesSparse current source reconstruction in MCG
چکیده انگلیسی

Cardiac current source reconstruction is investigated by a fast greedy sparse (FGS) method applied to simulated and real magnetocardiography (MCG) data measured using 61-channel superconducting quantum interference device. The approach reduces the size of the lead field matrix based on a priori knowledge of dipolar magnetic field map. Consequently, the computational demands and the accuracy of sparse source reconstruction are improved simultaneously. The simulation results demonstrate that the FGS method is capable of reconstructing sparse equivalent current sources using the magnetic field data generated by a single current source with varying orientation or multiple current sources generated randomly. In addition, we analyze the cardiac current source reconstructed with real MCG data at typical instants and discuss the electrical excitation conduction during the QRS complex based on moving sparse source imaging.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science Bulletin - Volume 60, Issue 14, July 2015, Pages 1235-1240
نویسندگان
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