Method for the operation of a magnetic resonance apparatus, whereby positional changes are acquired with orbital navigator echos
US6667618B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Nov 16, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method for the operation of a magnetic resonance apparatus, wherein a positional change of a region of an examination subject to be imaged relative to an imaging volume of the apparatus is acquired with orbital navigator echos, at least one reference dataset with data points is generated, the data points in the k-space, at least on a partial surface of a spherical surface, being arranged to occupy the partial surface in surface-covering fashion, and the partial surface extending at least around a great circle of the spherical surface corresponding to a maximally expected angular range of the positional change. For acquiring the positional change, a dataset of at least one of the navigator echos is compared to the reference dataset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.