发明名称 |
Total hemoglobin concentration measurement |
摘要 |
A method for operating a spectrophotometric instrument of the type for measuring the oxygenation state of hemoglobin in tissue. The method includes the use of stored hemoglobin concentration relationship data characterizing the relationship between second derivative absorbance values at a hemoglobin-absorbing wavelength and hemoglobin concentration in a tissue as a function of hemoglobin oxygenation state. Data representative of a second derivative absorbance value of tissue being analyzed is received. The hemoglobin oxygenation state of the tissue is determined as a function of the second derivative absorbance value. The hemoglobin concentration in the tissue is then determined as a function of the hemoglobin concentration relationship data, the second derivative absorbance value and the hemoglobin oxygenation state. The accuracy of the hemoglobin oxygenation state can be determined as a function of the hemoglobin concentration value.
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申请公布号 |
US6473632(B1) |
申请公布日期 |
2002.10.29 |
申请号 |
US20000595148 |
申请日期 |
2000.06.16 |
申请人 |
HUTCHINSON TECHNOLOGY INCORPORATED |
发明人 |
MYERS DEAN E. |
分类号 |
G01N33/483;A61B5/00;G01J3/433;G01N21/27;G01N21/35;G01N33/72;(IPC1-7):A61B5/00 |
主分类号 |
G01N33/483 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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