Magnetic resonance imaging method utilizing small excitation pul

Details Magnetic resonance imaging method utilizing small excitation pul Magnetic resonance imaging method utilizing small excitation pul

1986-06-05

1988-05-03

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01N 2408

Patent

active

047423013

ABSTRACT:
In known spin echo imaging examination a waiting period is customarily observed between two successive spin echo measurements in order to allow for the magnetic moment to relax in the direction of the uniform magnetic field Bo. In addition to this waiting period, the use of 180.degree. pulses also leads to a comparatively long examination time which increases the risk of image artefacts due to motions of, for example a patient to be examined. This comparatively long examination time is also unfavorable in view of the radiation load. In order to avoid these drawbacks, a method is proposed in which the electromagnetic pulses used are exclusively excitation pulses in the form of .alpha..degree. pulses, where 0<.alpha.<90.

REFERENCES:
patent: 4506222 (1985-03-01), Edelstein et al.
patent: 4607223 (1986-08-01), Mallard et al.

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