Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Patent
1998-09-09
2000-09-12
Oda, Christine K.
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
324318, 600410, G01V 300
Patent
active
061182737
ABSTRACT:
In a magnetic resonance imaging method in which after irradiating RF pulses of magnetic resonance frequencies into an object to be inspected, a sequence of detecting echo signals sequentially and a step of reconstructing an image by making use of the obtained echo signals are repeated in parallel, and an animating image is obtained by successively renewing a part of the echo signals used for reconstructing the previous image, a navigator echo is generated for every irradiation of the RF pulses and is detected, a navigator echo which serves as a reference for correcting phases of the echo signals used for the image reconstruction is successively renewed for every image, and the phases of the echo signals are corrected based on the renewed navigator echo for every image obtain the same. Thereby, a reference time for correcting object motion by making use of navigator echoes (3021, 3022) is set short and artifacts due to an object motion is reduced with an accuracy corresponding to a high temporal resolution. Thus, an MRI method which permits reduction of artifacts due to object motions while keeping a high temporal resolution for an MRI of animating images is provided.
REFERENCES:
patent: 4684891 (1987-08-01), Feinberg
patent: 4889127 (1989-12-01), Takeda et al.
patent: 5270654 (1993-12-01), Feinberg et al.
patent: 5382902 (1995-01-01), Taniguchi et al.
patent: 5521505 (1996-05-01), Kohno
patent: 5545993 (1996-08-01), Taguchi et al.
patent: 5668474 (1997-09-01), Heid
patent: 5800354 (1998-09-01), Hofland et al.
Takahashi Tetsuhiko
Takizawa Masahiro
Hitachi Medical Corporation
Oda Christine K.
Shrivastav Brij B.
LandOfFree
Magnetic resonance imaging method and device therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic resonance imaging method and device therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic resonance imaging method and device therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-99052