Method for the operation of a nuclear magnetic resonance apparat

Details Method for the operation of a nuclear magnetic resonance apparat Method for the operation of a nuclear magnetic resonance apparat

1986-10-10

1988-03-22

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01R 3320

Patent

active

047331860

ABSTRACT:
A method for the operation of a nuclear magnetic resonance apparatus excites the spin system of an examination subject by applying a fundamental magnetic field as well as by irradiation with a sequence of radio-frequency pulses and the nuclear magnetic resonance signals emitted by the spin system are measured. The chronological development of the longitudinal magnetization of the spin system can be tracked by a sequence of partial read pulses each having a flip angle of less than 90.degree. and thus a fast identification of the longitudinal relaxation time T.sub.1 can be achieved. In combination with applied gradient fields, the method can be applied in imaging nuclear magnetic resonance tomography.

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patent: 4532473 (1985-07-01), Wehrli
patent: 4558277 (1985-12-01), Post et al.
patent: 4587489 (1986-05-01), Wehrli
"NMR Imaging in Medicine", Pykett, Scientific American, vol. 246, No. 5, May 1982, pp. 54-64.
"Instrumentation for NMR Spin-Wrap Imaging", Johnson et al, 8056 J. Phys. E. Sci. Instr., vol. 15, No. 1, Jan. 1982, pp. 74-79.
"Signal, Noise, & Contrast in Nuclear Magnetic Resonance (NMR) Imaging", Edelstein et al, J. Compt. Assist. Tomogr., vol. 7, No. 3, Jun. 1983, pp. 391-401.

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