Magnetic gradient field projection

Details Magnetic gradient field projection Magnetic gradient field projection

2006-10-17

2006-10-17

Shrivastav, Brij B. (Department: 2859)

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

C324S319000

Reexamination Certificate

active

07123014

ABSTRACT:
The projection of magnetic gradient fields useful in Magnetic Resonance Imaging where projection of a gradient outside of a field generating assembly allows imaging of samples which will not physically fit inside the coil confines. The linearity of the projected gradient field is improved by arranging the position of the magnetic field generating coil conductors such that the second derivative of a gradient component is equal to zero. In one practical example the linearity is improved by providing a first circular coil which is positioned so that its center is offset along the axis of the field generating coil assembly by a distance equal to half the radius of the coil. In another example a pair of current carrying wires are selectively positioned offset from a region of interest.

REFERENCES:
patent: 4276529 (1981-06-01), Heinzerling et al.
patent: 4398150 (1983-08-01), Barjhoux et al.
patent: 4721914 (1988-01-01), Fukushima et al.
patent: 5378989 (1995-01-01), Barber et al.
patent: 5398989 (1995-03-01), Winter et al.
patent: 5497089 (1996-03-01), Lampman et al.
patent: 5677630 (1997-10-01), Laskaris et al.
patent: 0 610 012 (1994-08-01), None
patent: 0 834 747 (1998-04-01), None
patent: 0 834 747 (2000-03-01), None
patent: WO 91/12538 (1991-08-01), None
patent: WO 98/07362 (1998-02-01), None

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