Simultaneous measurement of changes in light absorption due to the reduction of cytochrome c oxidase and light scattering in rat brains during loss of tissue viability

S Kawauchi, S Sato, H Ooigawa, H Nawashiro… - Applied …, 2008 - opg.optica.org
We performed the simultaneous measurement of intrinsic optical signals (IOSs) related to
metabolic activity and cellular and subcellular morphological characteristics, ie, light …

Light scattering change precedes loss of cerebral adenosine triphosphate in a rat global ischemic brain model

S Kawauchi, S Sato, H Ooigawa, H Nawashiro… - Neuroscience …, 2009 - Elsevier
Measurement of intrinsic optical signals (IOSs) is an attractive technique for monitoring
tissue viability in brains since it enables noninvasive, real-time monitoring of morphological …

Light-scattering signal may indicate critical time zone to rescue brain tissue after hypoxia

S Kawauchi, S Sato, Y Uozumi… - … of biomedical optics, 2011 - spiedigitallibrary.org
A light-scattering signal, which is sensitive to cellular/subcellular structural integrity, is a
potential indicator of brain tissue viability because metabolic energy is used in part to …

Changes in optical properties of rat cerebral cortical slices during oxygen glucose deprivation

I Nishidate, K Yoshida, M Sato - Applied optics, 2010 - opg.optica.org
We simultaneously measured the diffuse reflectance spectra and transmittance spectra of in
vitro rat cerebral cortical tissue slices perfused with artificial cerebrospinal fluid (aCSF) in the …

Quantitation of time-and frequency-resolved optical spectra for the determination of tissue oxygenation

EM Sevick, B Chance, J Leigh, S Nioka, M Maris - Analytical biochemistry, 1991 - Elsevier
The recent development of near-infrared time-and frequency-resolved tissue spectroscopy
techniques to probe tissue oxygenation and tissue oxygenation kinetics has led to the need …

Measurement of the oxidation state of mitochondrial cytochrome c from the neocortex of the mammalian brain

Y Sakata, M Abajian, MO Ripple… - Biomedical optics …, 2012 - opg.optica.org
Diffuse optical remission spectra from the mammalian neocortex at visible wavelengths
contain spectral features originating from the mitochondria. A new algorithm is presented …

Diffuse light reflectance signals as potential indicators of loss of viability in brain tissue due to hypoxia: charge-coupled-device-based imaging and fiber-based …

S Kawauchi, I Nishidate, Y Uozumi… - … of biomedical optics, 2013 - spiedigitallibrary.org
Brain tissue is highly vulnerable to ischemia/hypoxia, and real-time monitoring of its viability
is important. By fiber-based measurements for rat brain, we previously observed a unique …

Noninvasive assessment of hemodynamic and brain metabolism parameters following closed head injury in a mouse model by comparative diffuse optical reflectance …

D Abookasis, B Volkov, A Shochat, I Kofman - Neurophotonics, 2016 - spiedigitallibrary.org
Optical techniques have gained substantial interest over the past four decades for
biomedical imaging due to their unique advantages, which may suggest their use as …

Early visual changes in reflected light on non-stained brain sections after focal ischemia mirror the area of ischemic damage

A Kharlamov, DK Kim, SC Jones - Journal of neuroscience methods, 2001 - Elsevier
There is no reliable, simple method for delineation of ischemic regions at early time points
after ischemia. We propose that at early times after stroke, ischemic regions can be …

Detection of neural light-scattering activity in vivo: optical transmittance studies in the rat brain

WJ Pan, SY Lee, J Billings, M Nezafati, W Majeed… - Neuroimage, 2018 - Elsevier
Optical studies of ex vivo brain slices where blood is absent show that neural activity is
accompanied by significant intrinsic optical signals (IOS) related to activity-dependent …