JP3825459B2 - 生体光計測装置 - Google Patents
生体光計測装置 Download PDFInfo
- Publication number
- JP3825459B2 JP3825459B2 JP2004352542A JP2004352542A JP3825459B2 JP 3825459 B2 JP3825459 B2 JP 3825459B2 JP 2004352542 A JP2004352542 A JP 2004352542A JP 2004352542 A JP2004352542 A JP 2004352542A JP 3825459 B2 JP3825459 B2 JP 3825459B2
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- load
- deoxy
- oxy
- measurement
- signal
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- Investigating Or Analysing Materials By Optical Means (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
=εoxy(λ)・Coxy(t)・d+εdeoxy(λ)・Cdeoxy(t)・d+A(λ)+S(λ) (2)
=εoxy(λ)・{Coxy(t)+C'oxy(t)+Noxy(t)}・d
+εdeoxy(λ)・[Cdeoxy(t)+C'deoxy(t)+Ndeoxy(t)]・d
+A'(λ)+S'(λ) (3)
=εoxy(λ){C'oxy(t)+Noxy(t)}d
+εdeoxy(λ){C'deoxy(t)+Ndeoxy (t)}d (4)
ΔCdeoxy(t)={C'deoxy(t)+Ndeoxy(t)}d (5)
Claims (3)
- 被検体頭部に対し波長λ1および波長λ2の光を照射する光照射手段と、
前記光照射手段から照射され、前記被検体内部で反射された光を検出する受光手段とを有し、
下記数式(1),(2)から、負荷による酸化および還元ヘモグロビン濃度相対変化量の時間変化を算出する演算手段を有することを特徴とする脳の血液動態変化を計測するための生体光計測装置。
Ln{Str(λ1,t)/Sm(λ1,t)}=εoxy(λ1)・ΔCoxy(t)+εdeoxy(λ1)・ΔCdeoxy (t)・・(1)
Ln{Str(λ2,t)/Sm(λ2,t)}=εoxy(λ2)・ΔCoxy(t)+εdeoxy(λ2)・ΔCdeoxy (t)・・(2)
Str(λ,t):波長λにおける予測無負荷信号の時間変化
Sm(λ,t):波長λにおける計測信号の時間変化
εoxy(λ):波長λにおける酸化ヘモグロビンの吸光係数
εdeoxy(λ):波長λにおける還元ヘモグロビンの吸光係数
ΔCoxy(t):負荷による酸化ヘモグロビン濃度相対変化量の時間変化
ΔCdeoxy(t):負荷による還元ヘモグロビン濃度相対変化量の時間変化 - 前記負荷による酸化および還元ヘモグロビン濃度相対変化量の時間変化を表示する画像表示手段を有することを特徴とする請求項1に記載の生体光計測装置。
- 前記波長λ1および波長λ2の光をそれぞれ異なる変調周波数で強度変調する変調器と、
前記変調器が変調した光を分離するロックインアンプとを有することを特徴とする請求項1に記載の生体光計測装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004352542A JP3825459B2 (ja) | 2004-12-06 | 2004-12-06 | 生体光計測装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004352542A JP3825459B2 (ja) | 2004-12-06 | 2004-12-06 | 生体光計測装置 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2002131352A Division JP2002372491A (ja) | 2002-05-07 | 2002-05-07 | 生体光計測装置の信号表示方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005103316A JP2005103316A (ja) | 2005-04-21 |
JP3825459B2 true JP3825459B2 (ja) | 2006-09-27 |
Family
ID=34545319
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Application Number | Title | Priority Date | Filing Date |
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JP2004352542A Expired - Lifetime JP3825459B2 (ja) | 2004-12-06 | 2004-12-06 | 生体光計測装置 |
Country Status (1)
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JP (1) | JP3825459B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8077297B2 (en) | 2008-06-30 | 2011-12-13 | Nellcor Puritan Bennett Ireland | Methods and systems for discriminating bands in scalograms |
US8295567B2 (en) | 2008-06-30 | 2012-10-23 | Nellcor Puritan Bennett Ireland | Systems and methods for ridge selection in scalograms of signals |
US8827917B2 (en) | 2008-06-30 | 2014-09-09 | Nelleor Puritan Bennett Ireland | Systems and methods for artifact detection in signals |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7925511B2 (en) | 2006-09-29 | 2011-04-12 | Nellcor Puritan Bennett Llc | System and method for secure voice identification in a medical device |
-
2004
- 2004-12-06 JP JP2004352542A patent/JP3825459B2/ja not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8077297B2 (en) | 2008-06-30 | 2011-12-13 | Nellcor Puritan Bennett Ireland | Methods and systems for discriminating bands in scalograms |
US8289501B2 (en) | 2008-06-30 | 2012-10-16 | Nellcor Puritan Bennett Ireland | Methods and systems for discriminating bands in scalograms |
US8295567B2 (en) | 2008-06-30 | 2012-10-23 | Nellcor Puritan Bennett Ireland | Systems and methods for ridge selection in scalograms of signals |
US8483459B2 (en) | 2008-06-30 | 2013-07-09 | Nèllcor Puritan Bennett Ireland | Systems and methods for ridge selection in scalograms of signals |
US8827917B2 (en) | 2008-06-30 | 2014-09-09 | Nelleor Puritan Bennett Ireland | Systems and methods for artifact detection in signals |
US9113815B2 (en) | 2008-06-30 | 2015-08-25 | Nellcor Puritan Bennett Ireland | Systems and methods for ridge selection in scalograms of signals |
Also Published As
Publication number | Publication date |
---|---|
JP2005103316A (ja) | 2005-04-21 |
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