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Literature DB >> 8182961

Minimum-norm estimation in a boundary-element torso model.

J T Nenonen¹, M S Hämäläinen, R J Ilmoniemi.

Abstract

The paper deals with the bioelectric and biomagnetic inverse problems. The authors present a method to estimate primary-current distributions in a homogeneous, realistically shaped boundary-element torso model. The reconstruction surface is triangulated to keep the procedure computationally feasible. The minimum-norm estimate is computed on the basis of separate electric and magnetic signals, as well as from combined data. The method can be used both for heart and brain studies. Simulation results for current-dipole sources in a homogeneous realistic torso are discussed.

Entities: Chemical

Mesh：

Year: 1994 PMID： 8182961 DOI： 10.1007/bf02512477

Source DB: PubMed Journal: Med Biol Eng Comput ISSN： 0140-0118 Impact factor: 2.602

6 in total

1. Estimates of visually evoked cortical currents.

Authors: S P Ahlfors; R J Ilmoniemi; M S Hämäläinen
Journal: Electroencephalogr Clin Neurophysiol Date: 1992-03

2. A linear discretization of the volume conductor boundary integral equation using analytically integrated elements.

Authors: J C de Munck
Journal: IEEE Trans Biomed Eng Date: 1992-09 Impact factor: 4.538

3. Magnetocardiographic functional localization using a current dipole in a realistic torso.

Authors: J Nenonen; C J Purcell; B M Horacek; G Stroink; T Katila
Journal: IEEE Trans Biomed Eng Date: 1991-07 Impact factor: 4.538

4. Basic mathematical and electromagnetic concepts of the biomagnetic inverse problem.

Authors: J Sarvas
Journal: Phys Med Biol Date: 1987-01 Impact factor: 3.609

5. Realistic conductivity geometry model of the human head for interpretation of neuromagnetic data.

Authors: M S Hämäläinen; J Sarvas
Journal: IEEE Trans Biomed Eng Date: 1989-02 Impact factor: 4.538

6. Interpreting magnetic fields of the brain: minimum norm estimates.

Authors: M S Hämäläinen; R J Ilmoniemi
Journal: Med Biol Eng Comput Date: 1994-01 Impact factor: 2.602

6 in total

5 in total

1. Biomagnetic functional localisation: iterative approach to estimation of electrical sources within the human heart from the magnetocardiogram.

Authors: B Tilg; P Wach; W Rucker; D Kynor
Journal: Med Biol Eng Comput Date: 1995-03 Impact factor: 2.602

Minimum-norm estimation in a boundary-element torso model.

1. Estimates of visually evoked cortical currents.

2. A linear discretization of the volume conductor boundary integral equation using analytically integrated elements.

3. Magnetocardiographic functional localization using a current dipole in a realistic torso.

4. Basic mathematical and electromagnetic concepts of the biomagnetic inverse problem.

5. Realistic conductivity geometry model of the human head for interpretation of neuromagnetic data.

6. Interpreting magnetic fields of the brain: minimum norm estimates.

1. Biomagnetic functional localisation: iterative approach to estimation of electrical sources within the human heart from the magnetocardiogram.

2. Interpreting magnetic fields of the brain: minimum norm estimates.

3. Localization of cortical phase and amplitude dynamics during visual working memory encoding and retention.

4. ECG Localization Method Based on Volume Conductor Model and Kalman Filtering.

5. Distinct spatio-temporal and spectral brain patterns for different thermal stimuli perception.