Image reconstruction method in NMR imaging

Details Image reconstruction method in NMR imaging Image reconstruction method in NMR imaging

1988-07-07

1990-07-03

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

G01R 3320

Patent

active

049394630

ABSTRACT:
A method wherein the requirement for the amplitude of the oscillating gradient magnetic field is relaxed by reconstructing an image while using simultaneously echoes S.sub.p (k.sub.x, y) produced in the case where the positive oscillating gradient magnetic field is applied to the object to be tested and echoes S.sub.N (k.sub.x, y) produced in the case where the negative is applied thereto, i.e. by using data points on segments of a trajectory of data points ascending from left to right in the spatial frequency domain and those on segments of a trajectory of data points ascending from right to left. That is, the image M(x, y) is obtained by Fourier-transforming at first the echoes S.sub.p (k.sub.x, k.sub.y) and S.sub.N (k.sub.x, k.sub.y) with respect to k.sub.y, multiplying complex numbers a.sub.1 and a.sub.2 to g.sub.p (k.sub.x, y) and g.sub.N (k.sub.x, y) obtained by this transformation; adding the results thus obtained, i.e. forming g(k.sub.x, y)=a.sub.1 g.sub.p (k.sub.x, y)+a.sub.2 g.sub.N (k.sub.x, y); and finally Fourier-transforming this g(k.sub.x, y) with respect to k.sub.x.

REFERENCES:
patent: 4355282 (1982-10-01), Young et al.
patent: 4588948 (1986-05-01), Mansfield
patent: 4678996 (1987-07-01), Haacke
patent: 4716369 (1987-12-01), Sekihara
patent: 4733188 (1988-03-01), Sekihara
Magnetic Resonance in Medicine, vol. 2, 1985, pp. 203-217.
Journal of Magnetic Resonance, vol. 67, No. 3, May 1986, pp. 476-490.
Magnetic Resonance in Medicine, vol. 5, No. 5, Nov. 1987, pp. 485-491.

Affiliated with

Also associated with

Rating

Image reconstruction method in NMR imaging does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image reconstruction method in NMR imaging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image reconstruction method in NMR imaging will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1893476