Multi-slice double inversion-recovery black-blood imaging with simultaneous slice re-inversion
US7315756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Jan 1, 2008 |
| Priority date | — |
| Expiry date | Dec 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-slice double inversion recovery (DIR) pulse sequence with read out of a signal for imaging successive slices implemented on a magnetic resonance image scanner. In the method, when the DIR pulse sequence is applied before imaging each slice, a slab-selective inversion re-inverts the entire slab that includes all of the slices. All slices are imaged within a predefined repetition time (TR). The number, N, of slices acquired per TR controls the inversion time to execute the read out of the signal for imaging each slice at a zero-crossing point of blood. In a test, multi-slice DIR images of carotid arteries were obtained with N ranging from 2-8, for four subjects. The results were compared with those for both standard single-slice DIR, and inflow saturation techniques. Multi-slice DIR with N=2-6 provided blood flow suppression in carotid arteries similar to that of single-slice DIR, and significantly better than inflow saturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.