Method of nuclear magnetic resonance angiographic imaging with r

Details Method of nuclear magnetic resonance angiographic imaging with r Method of nuclear magnetic resonance angiographic imaging with r

1991-06-21

1993-09-07

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Determine fluid flow rate

324309, 1286535, G01R 3320

Patent

active

052432831

ABSTRACT:
A method of nuclear magnetic resonance angiographic imaging capable of reducing an imaging operation time. The method includes the steps of: applying a plurality of pre-saturation excitation pulses sequentially to a pre-saturation section located over the flowing stream within an imaging region of the patient formed along the flowing stream, so as to pre-saturate the flowing stream located at the pre-saturation section at a time of application of each of the pre-saturation excitation pulses; dispersing and deleting transverse components of spins due to the pre-saturation excitation pulses applied at the applying step; exciting the imaging region by applying a single imaging excitation pulse and by using appropriate gradient magnetic fields, such that nuclear magnetic resonance signals are produced from the imaging region; and collecting the nuclear magnetic resonance signals from the imaging region by using appropriate gradient magnetic fields, and obtaining a nuclear magnetic resonance image showing a plurality of pre-saturated patterns corresponding to a plurality of the pre-saturation excitation pulses by processing the nuclear magnetic resonance signals.

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