Dynamic model of the thorax for ECG and ICG studies

J. Hyttinen, Jyrki Lötjönen, P. Kauppinen, M. Saarilampi, R.-K. Mäenpää, M. Jerosch-Herold, J. Zhang, R. Patterson, Jaakko Malmivuo

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    A 3D model of the thorax as a volume conductor representing 18 time instances of the cardiac cycle was constructed. The model is based on 18 sets of MR images representing 56 slices with 0.5 cm slice distance. The image sets were segmented on a two-stage process. The first time set of images was segmented based on 2D semiautomatic region growing method. The volumes occupied by 28 tissue types were determined. In the second phase mapping of the voxels between the other time instances were calculated based on deformable geometry models extending the first segmentation to all 18 time instances. The segmentation is directly useable for finite difference model. The model providing the dynamic properties of the thorax will be applied for forward and inverse problem of electrocardiography and simulation of the impedance cardiography and tomography.
    Original languageEnglish
    Pages (from-to)81-82
    JournalInternational Journal of Bioelectromagnetism
    Volume4
    Issue number2
    Publication statusPublished - 2002
    MoE publication typeNot Eligible

    Fingerprint

    Electrocardiography
    Dynamic models
    Cardiography
    Inverse problems
    Tomography
    Tissue
    Geometry

    Keywords

    • segmentation
    • non-rigid registration
    • thorax
    • ECG
    • ICG

    Cite this

    Hyttinen, J., Lötjönen, J., Kauppinen, P., Saarilampi, M., Mäenpää, R-K., Jerosch-Herold, M., ... Malmivuo, J. (2002). Dynamic model of the thorax for ECG and ICG studies. International Journal of Bioelectromagnetism, 4(2), 81-82.
    Hyttinen, J. ; Lötjönen, Jyrki ; Kauppinen, P. ; Saarilampi, M. ; Mäenpää, R.-K. ; Jerosch-Herold, M. ; Zhang, J. ; Patterson, R. ; Malmivuo, Jaakko. / Dynamic model of the thorax for ECG and ICG studies. In: International Journal of Bioelectromagnetism. 2002 ; Vol. 4, No. 2. pp. 81-82.
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    title = "Dynamic model of the thorax for ECG and ICG studies",
    abstract = "A 3D model of the thorax as a volume conductor representing 18 time instances of the cardiac cycle was constructed. The model is based on 18 sets of MR images representing 56 slices with 0.5 cm slice distance. The image sets were segmented on a two-stage process. The first time set of images was segmented based on 2D semiautomatic region growing method. The volumes occupied by 28 tissue types were determined. In the second phase mapping of the voxels between the other time instances were calculated based on deformable geometry models extending the first segmentation to all 18 time instances. The segmentation is directly useable for finite difference model. The model providing the dynamic properties of the thorax will be applied for forward and inverse problem of electrocardiography and simulation of the impedance cardiography and tomography.",
    keywords = "segmentation, non-rigid registration, thorax, ECG, ICG",
    author = "J. Hyttinen and Jyrki L{\"o}tj{\"o}nen and P. Kauppinen and M. Saarilampi and R.-K. M{\"a}enp{\"a}{\"a} and M. Jerosch-Herold and J. Zhang and R. Patterson and Jaakko Malmivuo",
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    language = "English",
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    Hyttinen, J, Lötjönen, J, Kauppinen, P, Saarilampi, M, Mäenpää, R-K, Jerosch-Herold, M, Zhang, J, Patterson, R & Malmivuo, J 2002, 'Dynamic model of the thorax for ECG and ICG studies', International Journal of Bioelectromagnetism, vol. 4, no. 2, pp. 81-82.

    Dynamic model of the thorax for ECG and ICG studies. / Hyttinen, J.; Lötjönen, Jyrki; Kauppinen, P.; Saarilampi, M.; Mäenpää, R.-K.; Jerosch-Herold, M.; Zhang, J.; Patterson, R.; Malmivuo, Jaakko.

    In: International Journal of Bioelectromagnetism, Vol. 4, No. 2, 2002, p. 81-82.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - Dynamic model of the thorax for ECG and ICG studies

    AU - Hyttinen, J.

    AU - Lötjönen, Jyrki

    AU - Kauppinen, P.

    AU - Saarilampi, M.

    AU - Mäenpää, R.-K.

    AU - Jerosch-Herold, M.

    AU - Zhang, J.

    AU - Patterson, R.

    AU - Malmivuo, Jaakko

    N1 - Project code: T2SU00362

    PY - 2002

    Y1 - 2002

    N2 - A 3D model of the thorax as a volume conductor representing 18 time instances of the cardiac cycle was constructed. The model is based on 18 sets of MR images representing 56 slices with 0.5 cm slice distance. The image sets were segmented on a two-stage process. The first time set of images was segmented based on 2D semiautomatic region growing method. The volumes occupied by 28 tissue types were determined. In the second phase mapping of the voxels between the other time instances were calculated based on deformable geometry models extending the first segmentation to all 18 time instances. The segmentation is directly useable for finite difference model. The model providing the dynamic properties of the thorax will be applied for forward and inverse problem of electrocardiography and simulation of the impedance cardiography and tomography.

    AB - A 3D model of the thorax as a volume conductor representing 18 time instances of the cardiac cycle was constructed. The model is based on 18 sets of MR images representing 56 slices with 0.5 cm slice distance. The image sets were segmented on a two-stage process. The first time set of images was segmented based on 2D semiautomatic region growing method. The volumes occupied by 28 tissue types were determined. In the second phase mapping of the voxels between the other time instances were calculated based on deformable geometry models extending the first segmentation to all 18 time instances. The segmentation is directly useable for finite difference model. The model providing the dynamic properties of the thorax will be applied for forward and inverse problem of electrocardiography and simulation of the impedance cardiography and tomography.

    KW - segmentation

    KW - non-rigid registration

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    KW - ECG

    KW - ICG

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    Hyttinen J, Lötjönen J, Kauppinen P, Saarilampi M, Mäenpää R-K, Jerosch-Herold M et al. Dynamic model of the thorax for ECG and ICG studies. International Journal of Bioelectromagnetism. 2002;4(2):81-82.