메뉴 건너뛰기




Volumn 50, Issue 1, 2003, Pages 40-49

MRI detection of weak magnetic fields due to an extended current dipole in a conducting sphere: A model for direct detection of neuronal currents in the brain

Author keywords

Current dipole; Direct neuronal detection; MR phase; Neuronal current; Spherical conductor

Indexed keywords

BRAIN; MAGNETIC RESONANCE IMAGING; NEURONS; SPHERES;

EID: 0038601502     PISSN: 07403194     EISSN: None     Source Type: Journal    
DOI: 10.1002/mrm.10494     Document Type: Article
Times cited : (84)

References (24)
  • 1
    • 0033995327 scopus 로고    scopus 로고
    • Non-invasive visualization of cortical columns by fMRI
    • Grinvald A, Slovin H, Vanzetta I. Non-invasive visualization of cortical columns by fMRI. Nat Neurosci 2000;3:105-107.
    • (2000) Nat Neurosci , vol.3 , pp. 105-107
    • Grinvald, A.1    Slovin, H.2    Vanzetta, I.3
  • 2
    • 0029997609 scopus 로고    scopus 로고
    • Interactions between electrical activity and cortical microcirculation revealed by imaging spectroscopy: Implication for functional brain mapping
    • Malonek D, Grinvald A. Interactions between electrical activity and cortical microcirculation revealed by imaging spectroscopy: implication for functional brain mapping. Science 1996;272:551-554.
    • (1996) Science , vol.272 , pp. 551-554
    • Malonek, D.1    Grinvald, A.2
  • 4
    • 0028391256 scopus 로고
    • Potential pitfalls of functional MRI using conventional gradient-recalled echo techniques
    • Kim SG, Hendrich K, Hu XP. Potential pitfalls of functional MRI using conventional gradient-recalled echo techniques. NMR Biomed 1994;7: 69-74.
    • (1994) NMR Biomed , vol.7 , pp. 69-74
    • Kim, S.G.1    Hendrich, K.2    Hu, X.P.3
  • 5
    • 0028398378 scopus 로고
    • Inflow versus deoxyhemoglobin effects in BOLD functional MRI using gradient echoes at 1.5T
    • Duyn JH, Moonen CTW, Yperen GH, Boer RW, Luyten PR. Inflow versus deoxyhemoglobin effects in BOLD functional MRI using gradient echoes at 1.5T. NMR Biomed 1994;7:83-88.
    • (1994) NMR Biomed , vol.7 , pp. 83-88
    • Duyn, J.H.1    Moonen, C.T.W.2    Yperen, G.H.3    Boer, R.W.4    Luyten, P.R.5
  • 6
    • 0028005698 scopus 로고
    • Brain or vein - Oxygenation or flow? On signal physiology in functional MRI of human brain activation
    • Frahm J, Merboldt D, Hanicke W, Kleinschmidt J, Boecker H. Brain or vein - oxygenation or flow? On signal physiology in functional MRI of human brain activation. NMR Biomed 1994;7:45-53.
    • (1994) NMR Biomed , vol.7 , pp. 45-53
    • Frahm, J.1    Merboldt, D.2    Hanicke, W.3    Kleinschmidt, J.4    Boecker, H.5
  • 7
    • 0027265576 scopus 로고
    • Identification of vascular structures as a major source of signal contrast in high resolution 2D and 3D functional activation imaging of the motor cortex at 1.5T: Preliminary results
    • Lai S, Hopkins AL, Haacke EM, Li D, Wasserman BA, Buckley P, Friedman L, Meltzer H, Hedera P, Friedland R. Identification of vascular structures as a major source of signal contrast in high resolution 2D and 3D functional activation imaging of the motor cortex at 1.5T: preliminary results. Magn Reson Med 1993;30:387-392.
    • (1993) Magn Reson Med , vol.30 , pp. 387-392
    • Lai, S.1    Hopkins, A.L.2    Haacke, E.M.3    Li, D.4    Wasserman, B.A.5    Buckley, P.6    Friedman, L.7    Meltzer, H.8    Hedera, P.9    Friedland, R.10
  • 8
    • 0030977795 scopus 로고    scopus 로고
    • Limitations of temporal resolution in functional MRI
    • Kim SG, Richter W, Ugurbil K. Limitations of temporal resolution in functional MRI. Magn Reson Med 1997;37:631-636.
    • (1997) Magn Reson Med , vol.37 , pp. 631-636
    • Kim, S.G.1    Richter, W.2    Ugurbil, K.3
  • 9
    • 0029999731 scopus 로고    scopus 로고
    • Linear systems analysis of functional magnetic resonance imaging in human V1
    • Boynton GM, Engel SA, Glover GH, Heeger DJ. Linear systems analysis of functional magnetic resonance imaging in human V1. J Neurosci 1996;16:4207-4221.
    • (1996) J Neurosci , vol.16 , pp. 4207-4221
    • Boynton, G.M.1    Engel, S.A.2    Glover, G.H.3    Heeger, D.J.4
  • 11
    • 0031880597 scopus 로고    scopus 로고
    • Non-linear aspects of the BOLD response in functional MRI
    • Vazquez AL, Noll DC. Non-linear aspects of the BOLD response in functional MRI. Neuroimage 1998;7:108:118.
    • (1998) Neuroimage , vol.7 , Issue.108 , pp. 118
    • Vazquez, A.L.1    Noll, D.C.2
  • 12
    • 0034816846 scopus 로고    scopus 로고
    • Spatial heterogeneity of the non-linear dynamics in the fMRI BOLD response
    • Birn RM, Saad ZS, Bandettini PA. Spatial heterogeneity of the non-linear dynamics in the fMRI BOLD response. Neuroimage 2001;14:817-826.
    • (2001) Neuroimage , vol.14 , pp. 817-826
    • Birn, R.M.1    Saad, Z.S.2    Bandettini, P.A.3
  • 14
    • 0036267186 scopus 로고    scopus 로고
    • Toward direct mapping of neuronal activity: MRI detection of ultraweak, transient magnetic field changes
    • Bodurka J, Bandettini PA. Toward direct mapping of neuronal activity: MRI detection of ultraweak, transient magnetic field changes. Magn Reson Med 2002;47:1052-1058.
    • (2002) Magn Reson Med , vol.47 , pp. 1052-1058
    • Bodurka, J.1    Bandettini, P.A.2
  • 15
    • 0030773474 scopus 로고    scopus 로고
    • Comparison of cortical activation evoked by face measured by intra-cranial field potentials and functional MRI: Two case studies
    • Puce A, Allison T, Spence SS, Spencer DD, McCarthy G. Comparison of cortical activation evoked by face measured by intra-cranial field potentials and functional MRI: two case studies. Hum Brain Mapp 1997; 5:298-305.
    • (1997) Hum Brain Mapp , vol.5 , pp. 298-305
    • Puce, A.1    Allison, T.2    Spence, S.S.3    Spencer, D.D.4    McCarthy, G.5
  • 17
    • 0013441428 scopus 로고    scopus 로고
    • BOLD localization: The implications of vascular architecture
    • Turner R, Miller G, Gilbert D. BOLD localization: the implications of vascular architecture. Neuroimage 2001:13(Part 2 Suppl S):1011,
    • (2001) Neuroimage , vol.13 , Issue.PART 2 SUPPL. S , pp. 1011
    • Turner, R.1    Miller, G.2    Gilbert, D.3
  • 18
    • 26244462082 scopus 로고
    • Magnetoencephalography - Theory, instrumentation, and applications to non-invasive studies of the working human brain
    • Hamalainen M, Hari R, Ilmoniemi J, Knuutila J, Lounasmaa OV. Magnetoencephalography - theory, instrumentation, and applications to non-invasive studies of the working human brain. Rev Mod Phys 1993; 65:413-497.
    • (1993) Rev Mod Phys , vol.65 , pp. 413-497
    • Hamalainen, M.1    Hari, R.2    Ilmoniemi, J.3    Knuutila, J.4    Lounasmaa, O.V.5
  • 19
    • 0033917140 scopus 로고    scopus 로고
    • Electric potential produced by a dipole in a homogeneous conducting sphere
    • Yao D. Electric potential produced by a dipole in a homogeneous conducting sphere. IEEE Trans Biomed Eng 2000;47:964-966.
    • (2000) IEEE Trans Biomed Eng , vol.47 , pp. 964-966
    • Yao, D.1
  • 20
    • 0014801448 scopus 로고
    • On the magnetic field generated outside an inhomogeneous volume conductor by internal current sources
    • Geselowitz DB. On the magnetic field generated outside an inhomogeneous volume conductor by internal current sources. IEEE Trans Magn 1970;MAG-6:346-347.
    • (1970) IEEE Trans Magn , vol.MAG-6 , pp. 346-347
    • Geselowitz, D.B.1
  • 21
    • 0015588569 scopus 로고
    • Eccentric dipole in a spherical medium: Generalized expression for surface potentials
    • Brody DA, Terry FH, Ideker RE. Eccentric dipole in a spherical medium: generalized expression for surface potentials. IEEE Trans Biomed Eng 1973;BME-20:141-143.
    • (1973) IEEE Trans Biomed Eng , vol.BME-20 , pp. 141-143
    • Brody, D.A.1    Terry, F.H.2    Ideker, R.E.3
  • 22
    • 0028839871 scopus 로고
    • The Rician distribution of noisy MRI data
    • Gubjartsson H. The Rician distribution of noisy MRI data. Magn Reson Med 1995;34:910-914.
    • (1995) Magn Reson Med , vol.34 , pp. 910-914
    • Gubjartsson, H.1
  • 23
    • 0028326327 scopus 로고
    • Echo-planar imaging of the brain at 3.0 T: First normal volunteer results
    • Mansfield P, Coxon R, Glover P. Echo-planar imaging of the brain at 3.0 T: first normal volunteer results. J Comput Assist Tomogr 1994;18: 339-343.
    • (1994) J Comput Assist Tomogr , vol.18 , pp. 339-343
    • Mansfield, P.1    Coxon, R.2    Glover, P.3
  • 24
    • 0000369227 scopus 로고
    • Steady state free precession in nuclear resonance
    • Carr HY. Steady state free precession in nuclear resonance. Phys Rev 1958;112:1693-1701.
    • (1958) Phys Rev , vol.112 , pp. 1693-1701
    • Carr, H.Y.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.