1999 Fiscal Year Final Research Report Summary
Development of noninvasive measurement of peripheral circulation and its application for health care
| Project/Area Number |
10557044
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Public health/Health science
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| Research Institution | THE UNIVERSITY OF TOKUSHIMA |
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Principal Investigator |
NAKAMURA Hideki The University of Tokushima, School of Medicine, Associate Professor, 医学部, 助教授 (70172426)
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| Co-Investigator(Kenkyū-buntansha) |
NOMURA Isoko The University of Tokushima, School of Medicine, Assistant, 医学部, 教務員 (90116848)
NAKAHORI Yutaka The University of Tokushima, School of Medicine, Professor, 医学部, 教授 (10172389)
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| Project Period (FY) |
1998 – 1999
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| Keywords | perpheral circulation / non-invasive measurement / vascular elasticity / health care |
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| Research Abstract |
Recently, it has become possible to noninvasively measure the oxygen saturation level of arterial blood, finger arterial pressure, and the elasticity of digital arteries using photosensors and light-emitting diodes(LED). Photosensors have also been used to measure the mechanical properties of digital arteries and indices such as the blood volume in peripheral tissue.
There are various peripheral circulatory indices that was obtained using a laser beam and near infrared light from LED. Though these indices can be obtained noninvasively or minimally invasively by application of short-term pressure, the continuity of measurement is lost when cuff pressure is applied. Measurement is insufficient using light of only 1 wavelength in this method. Determination of an absolute value can be improved if 2 wavelengths was used.
We has also carried out preliminary examination of the assessment of peripheral circulatory function using photosensors. The apparatus, the principle involved in measurement, the assessment of elasticity and nonlinear characteristics of the digital arteries, the measurement of tissue blood volume was establishied.
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