Correction of artifacts caused by Maxwell terms in slice offset

Details Correction of artifacts caused by Maxwell terms in slice offset Correction of artifacts caused by Maxwell terms in slice offset

1997-06-17

1999-07-13

Barlow, John

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, G01V 300

Patent

active

059231688

ABSTRACT:
A method is disclosed to remove the image artifacts produced by Maxwell terms arising from the imaging gradients in an echo planar imaging pulse sequence. The frequency and phase errors caused by the Maxwell terms are calculated on an individual slice basis. During the subsequent data acquisition these errors are compensated by dynamically adjusting the receiver frequency and phase.

REFERENCES:
Nonaxial Whole-Body Instant Imaging, MRM 29:796-803 (1993), Weisskoff, et al.
Concomitant Magnetic Field Gradients and Their Effects on Image at Low Magnetic Field Strengths, MRI, vol. 8, pp. 33-37, 1990, Norris, et al.
Phase Errors in NMR Images, Book of Abstracts, Soc. of Mag. Reson. in Med., vol. 1, p. 1037, London UK 1985, Norris.
EPI Spatial Distortion in Non-Transverse Planes, Book of Abstracts, Soc. of Mag. Reson. in Med., vol. 1, p. 361, Amsterdam, the Netherlands, 1989, Coxon, et al.
Reduction of Concomitant Field Gradient Effects by Main Field Altermation, Proc. of the Soc. of Mag. Reson. in Med., vol. 1, p. 314, Nice France 1995, Claasen-Vujcic, et al.
On Phase Artifacts of High-Field Fast Spin-Echo Images, Proc. of the Soc. of Mag. Reson. in Med., vol. 3, p. 1248, New York New York, 1993, Zhou, et al.
Image Distortion in Coronal Instant Images?, Book of Abstracts, Soc. of Mag. Reson. in Med., vol. 1, p. 457, New York New York, 1990, Weisskoff.

Affiliated with

Also associated with

Rating

Correction of artifacts caused by Maxwell terms in slice offset does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Correction of artifacts caused by Maxwell terms in slice offset , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correction of artifacts caused by Maxwell terms in slice offset will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2278774