Signal inhomogeneity correction and performance evaluation apparatus
US10247802B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Dec 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/586
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods for correcting inhomogeneities of magnetic resonance (MR) images and for evaluating the performance of the inhomogeneity correction. The contribution of both transmit field and receiver sensitivity to signal inhomogeneity have been separately considered and quantified. As a result, their negative contributions can be fully corrected. The correction method can greatly enhance the accuracy and precision of MRI techniques and improve the detection sensitivity of pathophysiological changes. The performance of signal inhomogeneity correction methods has been evaluated and confirmed using phantom and in vivo human brain experiments. The present methodologies are readily applicable to correct signal intensity inhomogeneity artifacts produced in different imaging modalities, such as computer tomography, X-ray, ultrasound, and transmission electron microscopy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.