Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1986-09-16
1988-03-29
Noland, Tom
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
G01R 3320
Patent
active
047346469
ABSTRACT:
A method for obtaining in the course of a single scan T1-weighted and T2-weighted NMR imaging data for a plurality of selected planes in an object using nuclear magnetic resonance techniques. The method is accomplished by positioning an object to be imaged in a static homogeneous magnetic field and then carrying out a plurality of repetitions of a repetition sequence composed of NMR excitation and magnetic field gradient pulses for a plurality of selected planes in the object. The repetition sequences for each of the selected planes include a combination of a T1-weighted pulse sequence having a TE.sub.1 and TR.sub.1 suitable for obtaining T1-weighted NMR imaging data and a T2-weighted pulse sequence having a TE.sub.2 and TR.sub.2 suitable for obtaining T2-weighted NMR imaging data. The repetition sequence for each selected plane is repeated a plurality of times and carried out in a manner so as to encode spatial information into the collection of NMR signals. Also, the T1-weighted and T2-weighted pulse sequences for each selected plane is carried out during the recovery time intervals provided in the repetition sequence for other selected planes. In this manner, T1 and T2-weighted NMR image data for a plurality of planes are obtained in a single scan in significantly reduced time.
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Damadian Raymond V.
Morrone Terry
Shenoy Rajendra K.
Wolf Robert B.
Fonar Corporation
Noland Tom
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