Shear mode pressure-activated driver for magnetic resonance elastography
US8508229B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2010 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Aug 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56358
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic resonance elastography (“MRE”) driver that can produce shear waves in a subject without relying on mode conversion of longitudinal waves is disclosed. More specifically, the MRE driver includes a pneumatic driver located remotely from a magnetic resonance imaging (“MRI”) system which is operable in response to an applied electrical current to oscillate, a pressure-activated driver that is positioned on a subject in the MRI system, and a tube that is in fluid communication, at one end, with the pneumatic driver. The pressure-activated driver includes a base plate and a driver plate having a region between them that receives the tube. Oscillations of the pneumatic driver produce a pressure wave in the tube that causes the driver plate to vibrate. The driver plate rests against the subject of interest to apply a corresponding shear oscillatory force to the subject during the MRE examination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.