Multi-channel real-time phase modulation for EMI reduction in an ultrasound device
US11806554B2 · kind B2 · utility
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Key dates
| Filing date | Oct 3, 2017 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Mar 12, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2007/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods for reducing electromagnetic interference arising from use of multiple ultrasound transducers in an array, particularly inside a human body that is inside a magnetic resonance imaging device. Electrical signals driving the transducers are offset in phase with respect to one another so as to achieve maximum offset of electrical and magnetic fields arising from such signals and transducers. Phase offsets are dynamically adjusted to respond to changes in driving amplitudes and frequencies so as to maintain optimal reduction of electromagnetic interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.