Apparatus and method for non-invasive measurement of cardiac output
US7646274B2 · kind B2 · utility
12Cited by
2References
15Claims
0Family size
Inventor
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Jan 12, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5635
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A comparatively light and compact permanent magnet arrangement for an MRI apparatus has a pair of opposed permanent magnet arrays with a shimming system to adjust the uniformity and strength of a magnetic field in a central chamber of the apparatus. The MRI apparatus is used to examine the extremities of a patient to determine cardiovascular characteristics from an analysis of the blood flow through selected arteries in the extremity. The information collected can be used to calculate such characteristics as total cardiac output, blood flow, arterial wall thickness and elasticity and the presence of plaque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.