Interventional magnetic resonance imaging based on global coherent free precession
US7957788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Nov 8, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/055
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and systems for obtaining intravascular magnetic resonance images of blood flow are disclosed. In preferred forms, a train of radio frequency (RF) pulses is produced by an intravascularly introduced RF transmitter positioned in proximate location to the blood flow so as to create a continuous stream of coherently excited protons of the blood flow. The coherently excited protons of the blood flow are sampled as the protons freely precess while flowing through a region of three dimensional space unaffected by the ongoing intravascular RF excitation. An image of the sampled coherently excited protons may then be constructed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.