書誌事項
- タイトル別名
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- A Preliminary Study on Development of a Novel Optical Instrument for Non-invasive Blood Alcohol Measurement:Proposal of Pulse Alcometry
- 光電容積脈波式血中アルコール濃度計測装置の開発 : in vivo試験による予備的検討
- コウデン ヨウセキ ミャクハシキ ケッチュウ アルコール ノウド ケイソク ソウチ ノ カイハツ : in vivo シケン ニ ヨル ヨビテキ ケントウ
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In this preliminary study, we examined in human volunteers the performance of the developed prototype device for non-invasive quantification of blood alcohol concentration (BAC) by near-infrared light which is highly transparent to the body. We aimed at applying the results to the final goal of developing a novel alcohol-based vehicle ignition-interlock device. Accumulating evidence shows that one of the ethyl alcohol absorption peaks in the near-infrared region is present at 1,185 nm. We combined this with our recent development of a non-invasive optical method for blood glucose measurement, which we call pulse glucometry, using blood volume pulsations in a finger within a cardiac cycle. Thus, we developed a novel method, pulse alcometry, for non-invasive measurement of BAC. We calculated second derivative values of optical density (ODλ”) to remove baseline over a band including three wavelengths, 1,150 nm, 1,185 nm, and 1,220 nm. Then, a simple linear regression analysis was performed with the measured ODλ” to predict BAC levels. In 3 healthy male volunteers, during alcohol intake and washout, periodic optical measurements using the present device were made simultaneously with collection of blood samples for in vitro BAC analysis. In leave-one-out cross validations within an individual, the measured BAC and the predicted BAC correlated well (r = 0.773∼0.846, mean absolute error = 0.134∼0.333mg/ml). We conclude that, from the results of this preliminary study, the new method appears to be able to estimate BAC levels non-invasively. However, further investigations in a larger group of subjects will be needed in order to determine fully the operational performance of this new measurement system.
収録刊行物
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- 生体医工学
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生体医工学 50 (2), 237-247, 2012
公益社団法人 日本生体医工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680243450624
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- NII論文ID
- 40019356725
- 130004494182
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- NII書誌ID
- AA11633569
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- ISSN
- 18814379
- 1347443X
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- NDL書誌ID
- 023838577
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
- KAKEN
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- 使用不可