Moving table MRI with frequency-encoding in the z-direction
US6891374B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.