Method of vector magnetic resonance measurement and imaging and

Details Method of vector magnetic resonance measurement and imaging and Method of vector magnetic resonance measurement and imaging and

1991-08-09

1994-01-25

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01V 300

Patent

active

052819140

ABSTRACT:
A method of vector magnetic resonance measuring and imaging and associated apparatus provide for a specimen being placed in a main magnetic field, RF pulses being impinged thereon, and magnetic field gradients being superimposed thereupon, preferably with three input gradient pulses being impinged preferably simultaneously to construct a balanced system of four gradient vectors having equally strong moments Four cycles of such input gradient pulses are employed to create four magnetic gradient moments from which velocity or motion vectors are created. A receiver obtains signals from a specimen and converts them into information which is introduced into a computer. The computer converts the signals sensitized by the gradient vector moments into motional-type vector information which can be measured and imaged. Different approaches may be taken for low velocity and high velocity usages. In the latter case, as well as others, a null acquisition which does not substantially adversely affect the signal-to-noise ratio may be employed.

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