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Volumn 46, Issue 26, 2007, Pages 4820-4824

Magnetic resonance at or below the earth's magnetic field

Author keywords

Coupling constants; Functional imaging; Magnetic resonance imaging; NMR spectroscopy; SQUID

Indexed keywords

FUNCTIONAL IMAGING; HETERONUCLEAR COUPLINGS; MAGNETIC FIELD STRENGTH;

EID: 34447313418     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200700730     Document Type: Review
Times cited : (5)

References (52)
  • 2
    • 34447321535 scopus 로고    scopus 로고
    • eff for the nuclei, leading to slightly different frequencies and in total to line broadening.
    • eff for the nuclei, leading to slightly different frequencies and in total to line broadening.
  • 3
    • 0034820233 scopus 로고    scopus 로고
    • This is valid except for 129Xe, for which chemical shifts are extremely sensitive to its environment. For resolution of 129Xe chemical shifts at ultralow fields (ULF, see: a) S. Saxena, A. Wong-Foy, A. J. Moule, J. A. Seeley, R. McDermott, J. Clarke, A. Pines, J. Am. Chem. Soc. 2001, 123, 8133-8134;
    • 129Xe chemical shifts at ultralow fields (ULF), see: a) S. Saxena, A. Wong-Foy, A. J. Moule, J. A. Seeley, R. McDermott, J. Clarke, A. Pines, J. Am. Chem. Soc. 2001, 123, 8133-8134;
  • 6
    • 34447310792 scopus 로고    scopus 로고
    • 0 is the magnetic permeability constant and χ is the magnetic susceptibility (see Ref. [1]).
    • 0 is the magnetic permeability constant and χ is the magnetic susceptibility (see Ref. [1]).
  • 7
  • 14
    • 34447314416 scopus 로고    scopus 로고
    • Wellington, New Zealand
    • Such as Terranova from Magritek, Wellington, New Zealand: http://www.magritek.com/terranova.html.
    • Such as Terranova from Magritek
  • 18
    • 84891026021 scopus 로고    scopus 로고
    • Eds, J. Clarke, A. I. Braginski, Wiley-VCH, Weinheim
    • b) The SQUID Handbook, Vol. I (Eds.: J. Clarke, A. I. Braginski), Wiley-VCH, Weinheim, 2004;
    • (2004) The SQUID Handbook , vol.1
  • 20
    • 34447304835 scopus 로고    scopus 로고
    • In a gradiometer, two measurement devices (magnetometers or pickup loops) are arranged in opposite direction so that they report the difference (the gradient) of the magnetic field
    • In a gradiometer, two measurement devices (magnetometers or pickup loops) are arranged in opposite direction so that they report the difference (the "gradient") of the magnetic field.
  • 21
    • 34447311330 scopus 로고    scopus 로고
    • c is the critical temperature below which the material becomes superconducting.
    • c is the critical temperature below which the material becomes superconducting.
  • 24
    • 0015316584 scopus 로고
    • for a review, see
    • for a review, see: F. Hartmann, IEEE Trans. Magn. 1972, 8, 66-75.
    • (1972) IEEE Trans. Magn , vol.8 , pp. 66-75
    • Hartmann, F.1
  • 32
    • 34447329252 scopus 로고    scopus 로고
    • Note that for spin > 1/2, a magnetic field is not necessary to observe the Zeeman effect.
    • Note that for spin > 1/2, a magnetic field is not necessary to observe the Zeeman effect.
  • 34
    • 34447308459 scopus 로고    scopus 로고
    • The difference in resonance frequencies is smaller than the line widths of the signal
    • The difference in resonance frequencies is smaller than the line widths of the signal.
  • 38
    • 34447304310 scopus 로고    scopus 로고
    • A spin system is said to be of higher order (strongly coupled) if the splitting that results from coupling is greater than ten times the difference in resonance frequency (chemical shift difference) of the coupling partners. This is observed quite often in homonuclear spin systems of organic compounds e.g. diastereotopic benzylic protons, but is very unusual for heteronuclear spin systems
    • A spin system is said to be of higher order (strongly coupled) if the splitting that results from coupling is greater than ten times the difference in resonance frequency (chemical shift difference) of the coupling partners. This is observed quite often in homonuclear spin systems of organic compounds (e.g. diastereotopic benzylic protons), but is very unusual for heteronuclear spin systems
  • 41
    • 34047236328 scopus 로고    scopus 로고
    • For a recent review on RDCs in organic compounds, see
    • For a recent review on RDCs in organic compounds, see: C. M. Thiele, Conc. Magn. Reson. A 2007, 30, 65-80.
    • (2007) Conc. Magn. Reson. A , vol.30 , pp. 65-80
    • Thiele, C.M.1
  • 49
    • 34447298573 scopus 로고    scopus 로고
    • A SQUID gradiometer is used here, but this is a general problem of gradiometers and also applies to gradiometers based on atomic magnetometers
    • A SQUID gradiometer is used here, but this is a general problem of gradiometers and also applies to gradiometers based on atomic magnetometers.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.