Transmission line techniques for MRI catheter coil miniaturization and tuning
US6766185B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49123
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and method with miniature and tunable MRI receiver coil for catheters is provided that can be used in minimally invasive procedures and intravascular imaging. An MRI receiver coil for catheter procedures is provided having an impedance matching element that includes at least one miniature transmission line cable which are interconnected to construct the impedance matching element. In a particular embodiment, the miniature transmission line cables are constructed to make an inductance matching element defining an inductance L. In another particular embodiment, the miniature transmission line cable is a capacitance matching element defining a capacitance C. The present invention provides a system and method that allows local fine-tuning with a higher signal-to-noise ratio. Transmission line cables also overcome the minimum size limits of fixed components. The shielded and balance techniques further reduce noise and improve safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.