Steady-state imaging sequence
US6549008B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2000 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A subject is disposed in an imaging region (10) of a magnetic resonance imaging apparatus. An operator designates a steady-state imaging sequence and a sequence controller (42) coordinates a gradient field controller (30) and an RF pulse controller (38) to generate the desired sequence. The gradient controller applies gradients that define a closed trajectory through k-space that starts at an origin point and follows a closed path to an end point. An analyzer (112) analyzes data sampled at the beginning and end points. A gradient offset processor (114) signals the sequence controller to apply additional gradients until the analyzer determines that the end point coincides with the origin point. A scaling circuit (84) scales data sampled between the origin and end points for various anomalies in the steady-state magnetization, reconstructing scaled data into at least one image representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.