Reduction of MRI interference from the electrocardiogram using lead information
US10231671B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2013 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Feb 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5673
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A circuit (32) for use in an magnetic resonance (MR) system to reduce MR interference of a physiological signal S(f) includes a first summing/subtraction node (36), a high pass filter (40), and a second summing/subtraction node (42). The first summing/subtraction node (36) inputs a first signal (34) including radio frequency magnetic interference N(f) and a physiological signal S(f), and a second signal (38) including the physiological signal S(f) and an error signal E(f), and subtractively combines the second signal with the first signal to generate a difference signal N(f)−E(f). The high pass filter (40) filters the difference signal N(f)−E(f) from the first summing/subtraction node. The second summing/subtraction node (42) subtractively combines the first signal S(f)+N(f) (34) and the filtered signal H(f)*[N(f)−E(f)] from the high pass filter, and generates the second signal S(f)+E(f) (38).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.