Digital filter for NMR an MRI applications
US7071691B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2005 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Mar 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4625
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for operating a magnetic resonance spectrometer with a digital filter whose input is fed with an NMR signal of a time length TA, and whose output signal consists of a rising oscillation B1 of a length TB, a signal portion [F]′ which consists of a filtered FID or echo signal of the length TA and a decaying oscillation B2 of a length TB, wherein this output signal is initially modified using a calculation process RV, and is subsequently transformed by Fourier transformation to a desired NMR spectrum, is characterized in that, during the calculation process RV, only the signal portion [F]′ is initially selected, at least N copies of the rising oscillation B1 are subsequently generated in positive time shifts TA with respect to each other and are positioned on the signal portion [F′] in time such that the end of the first rising oscillation is positioned at the end of the signal portion, at least N copies of the decaying oscillation B2 are generated in negative shifts TA and are positioned on the signal portion [F′] in time such that the start of the first decaying oscillation is positioned at the start of the signal portion [F′], and all N copies of the rising oscillation B1 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.