Method and apparatus for non-invasive continuous monitoring of cerebrovascular autoregulation state
US8062224B2 · kind B2 · utility
19Cited by
33References
21Claims
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Key dates
| Filing date | Oct 27, 2005 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Apr 19, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A non-invasive method for continuous real-time monitoring of cerebrovascular blood flow autoregulation state includes simultaneous non-invasive monitoring of intracranial blood volume respiratory waves and lung volume respiratory waves, real-time decomposition of intracranial blood volume respiratory waves and lung volume respiratory waves into narrowband sinewave first harmonic components, determination therefrom of the phase shift between intracranial blood volume respiratory wave and lung volume respiratory wave first harmonics' and derivation of cerebrovascular autoregulation state from that phase shift value.
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