发明名称 |
Process and device for non-invasively determining cerebral blood flow by near-infrared spectroscopy |
摘要 |
A process and device for noninvasive measurement of cerebral blood flow simultaneously determines of a blood flow index which is directly proportional to the blood flow. Cerebral surge kinetics of an intravenously injected indicator dye with absorption properties in the near-infrared spectrum is sensed by near-infrared spectroscopy and the arterial surge kinetics is sensed by pulse densitometry. A device for carrying out this process consists of a multichannel apparatus having at least two near-infrared spectroscopes, each having two pulsed monochromatic light sources, a measuring and a reference wavelength, in the range of the near-infrared spectrum; one or more light sensors connected to a photomultiplier; and a noninvasive measuring device which determines, by pulse densitometry, the concentration of the tracer in the arterial blood of the circulatory system.
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申请公布号 |
US6223069(B1) |
申请公布日期 |
2001.04.24 |
申请号 |
US19990254153 |
申请日期 |
1999.07.02 |
申请人 |
PULSION MEDICAL SYSTEMS AG |
发明人 |
PFEIFFER ULRICH J.;KUBLER WOLFGANG;GOETZ ALWIN E. |
分类号 |
A61B5/026;A61B5/0275;A61B10/00;(IPC1-7):A61B5/026 |
主分类号 |
A61B5/026 |
代理机构 |
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地址 |
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