Motion artifact removal
US8649579B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 17, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Aug 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems, methods, and other embodiments associated with removing motion artifacts from MR images are described. One example method includes controlling an MRI apparatus to acquire a fully sampled, centric-ordered, non-interleaved, data set from an object to be imaged and controlling a Generalized Auto-Calibrating Partially Parallel Acquisition (GRAPPA) logic to produce a GRAPPA duplicate of a single partition through the data set. The method also includes computing, from the GRAPPA duplicate, a GRAPPA navigator for a phase encoding (PE) line in the single partition and computing an error between the PE line in the single partition and a corresponding PE line in the GRAPPA duplicate using the GRAPPA navigator. The method also includes selectively replacing data in the PE line in the single partition with replacement data upon determining that the error exceeds a threshold. The method may include reconstructing an MR image based, at least in part, on the single partition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.