Moving table MRI with frequency-encoding in the z-direction

Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C324S318000, C324S307000, C600S410000, C600S415000

Reexamination Certificate

active

06891374

ABSTRACT:
A system and method are disclosed using continuous table motion while acquiring data to reconstruct MR images across a large FOV without significant slab-boundary artifacts that reduces acquisition time. At each table position, full z-encoding data are acquired for a subset of the transverse k-space data. The table is moved through a number of positions over the desired FOV and MR data are acquired over the plurality of table positions. Since full z-data are acquired for each slab, the data can be Fourier transformed in z, interpolated, sorted, and aligned to match anatomic z locations. The fully sampled and aligned data is then Fourier transformed in remaining dimension(s) to reconstruct the final image that is free of slab-boundary artifacts.

REFERENCES:
patent: 5928148 (1999-07-01), Wang et al.
patent: 6385478 (2002-05-01), Hajnal
patent: 6445181 (2002-09-01), Pelc et al.
patent: 6584337 (2003-06-01), Dumoulin et al.
patent: 6617850 (2003-09-01), Welch et al.
patent: 20020021128 (2002-02-01), Kuhara
patent: 20020115929 (2002-08-01), Machida
patent: 20020140423 (2002-10-01), Brittain
patent: 20020173715 (2002-11-01), Kruger et al.
patent: 20030011369 (2003-01-01), Brittain et al.
patent: 20030100825 (2003-05-01), Demoulin et al.
patent: 20030102864 (2003-06-01), Welch et al.
patent: 20040155654 (2004-08-01), Brittain
patent: H6-304153 (1994-11-01), None
patent: H6-311977 (1994-11-01), None
patent: H8-173396 (1996-07-01), None
Dietrich et al., article “Extending the coverage of true volume scans by continuous movement of the subject” by Olaf Dietrich and Joseph V. Hajnal from The Robert Steiner Magnetic Resonance Unit, Hammersmith Hospital, Du Cane Road, London W120HS 1999.*
Yoshitome Japanese Laid-open Patent Application (kokai) No. H6-304153 disclosed Nov. 1st 1994.*
Yoshitome Japanese Laid-open Patent Application (kokai) No. H6-311977 disclosed Nov. 8th 1994.*
US Provisional Appl. No. 60/282,555, filed Apr. 9, 2001.
J. Pipe,Analysis of Localized Quadratic Encoding and Reconstruction, MRM 36:137-146 (1996).
K. Liu et al.,Applications of Shifted-Interleaved Multi-Volume Acquisition(SIMVA)with Suppressed Slab Boundary Artifact, ISMRM Seventh Scientific Meeting, p. 1618 (1999).
K. Liu et al.,Artifact Transformation Technique: Shifted Interleaved Multi-Volume Acquisition(SIMVA)for 3D FSE, ISMRM Sixth Scientific Meeting, p. 572 (1998).
O. Dietrich et al.,Extending the Coverage of True Volume Scans by Continuous Movement of the Subject, ISMRM Seventh Scientific Meeting, p. 1653 (1999).
K.Y. Ho et al.,Gadolinium Optimized Tracking Technique: A New MRA Technique for Imaging the Peripheral Vascular Tree from Aorta to the Foot Using One Bolus of Gadolinium, ISMRM Fifth Scientific Meeting, p. 203 (1997).
J. Hennig,Overlapping Section Coverage in Multisection Imaging, JMRI 3:425-432 (1993).
K. Liu et al.,Sliding Interleaved ky(SLINKY)Acquisition: A Novel 3D MRA Technique with Suppressed Slab Boundary Artifact, JMRI 8:903-911 (1998).
K. Liu,SLINKY: More Understanding, Optimization and Application for High Resolution MRA, ISMRM Seventh Scientific Meeting, p. 1908 (1999).
J. Pipe,Spatial Encoding and Reconstruction in MRI with Quadratic Phase Profiles, MRM 33:24-33 (1995).
K. Liu et al.,Systematic Assessment and Evaluation of Sliding Interleaved ky(SLINKY)Acquisition for 3D MRA, JMRI 8:912-923 (1998).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Moving table MRI with frequency-encoding in the z-direction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Moving table MRI with frequency-encoding in the z-direction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moving table MRI with frequency-encoding in the z-direction will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3403809

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.