Early Diagnosis of Cerebral Ischemia in Cerebral Vasospasm by Oxygen-Pulse Near-Infrared Optical Topography

Tanaka, Yuichi; Ebihara, Akira; Ikota, Masashi; Yamaguro, Tomotaka; Kamochi, Haruna; Kusaka, Gen; Ishikawa, Mami; Konno, Tetsuo; Mashiko, Toshihiro; Watanabe, Eiju

doi:10.1007/978-3-319-04981-6_45

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…cardiac and vascular surgeries) [Maldonado et al ; Kato et al ], the neurosurgical critical care unit (ex. monitoring of seizures or vasospasm) [Yokose et al, ; Keller et al, ; Seule et al, ; Tanaka et al, ] and rehabilitation centers (ex. study of brain plasticity after injury) [Strangman et al, ; Arenth et al, ; Mihara et al, ; Yoshino et al, ; Khan et al, ].…”

Section: Discussionmentioning

confidence: 99%

Multichannel wearable fNIRS‐EEGsystem for long‐term clinical monitoring

Kassab

Lan

Tremblay

et al. 2017

Human Brain Mapping

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Continuous brain imaging techniques can be beneficial for the monitoring of neurological pathologies (such as epilepsy or stroke) and neuroimaging protocols involving movement. Among existing ones, functional near-infrared spectroscopy (fNIRS) and electroencephalography (EEG) have the advantage of being noninvasive, nonobstructive, inexpensive, yield portable solutions, and offer complementary monitoring of electrical and local hemodynamic activities. This article presents a novel system with 128 fNIRS channels and 32 EEG channels with the potential to cover a larger fraction of the adult superficial cortex than earlier works, is integrated with 32 EEG channels, is light and batterypowered to improve portability, and can transmit data wirelessly to an interface for real-time display of electrical and hemodynamic activities. A novel fNIRS-EEG stretchable cap, two analog channels for auxiliary data (e.g., electrocardiogram), eight digital triggers for event-related protocols and an internal accelerometer for movement artifacts removal contribute to improve data acquisition quality. The system can run continuously for 24 h. Following instrumentation validation and reliability on a solid phantom, performance was evaluated on (1) 12 healthy participants during either a visual (checkerboard) task at rest or while pedalling on a stationary bicycle or a cognitive (language) task and (2) 4 patients admitted either to the epilepsy (n 5 3) or stroke (n 5 1) units. Data analysis confirmed expected hemodynamic variations during validation recordings and useful clinical information during inhospital testing. To the best of our knowledge, this is the first demonstration of a wearable wireless Additional Supporting Information may be found in the online version of this article.

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Section: Discussionmentioning

confidence: 99%

Multichannel wearable fNIRS‐EEGsystem for long‐term clinical monitoring

Kassab

Lan

Tremblay

et al. 2017

Human Brain Mapping

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“…Clinically, brain NIRS has been used as a marker for cerebral oxygenation during the intraoperative management of cardiopulmonary bypass and carotid endarterectomy (8,10,11,18). It has also been investigated for use in the management of adult and neonatal ischemic brain injury (1,3,6,14) and traumatic brain injury (22). However, the utility of NIRS in assisting in the management of cerebral hypertension has not been well assessed.…”

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confidence: 99%

The correlation between brain near-infrared spectroscopy and cerebral blood flow in piglets with intracranial hypertension

2016

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Cerebral perfusion pressure (CPP) is used as a surrogate for measurement of cerebral blood flow (CBF) but its determination requires that intracranial pressure be directly measured. Near-infrared spectroscopy (NIRS) can noninvasively measure tissue oxygenation. We hypothesized that NIRS would correlate well with CBF, with cerebral metabolism of oxygen (CMRO2) and glucose and with lactate production as CPP was reduced. Seven anesthetized piglets were subjected to reductions in CPP to 60, 50, 40, 30, and 20 mmHg by infusing an artificial cerebral spinal fluid into the lateral ventricle of the brain. After a period of equilibration, NIRS over the left temporal cortex and regional CBF (microspheres) were measured at each CPP level as well as arterial and internal jugular PaO2 , glucose, and lactate. CMRO2 and glucose consumption and lactate production were calculated by standard formulae. NIRS correlated very well (P < 0.05) with CBF in the left temporal cortex [mean r (95% CI) = 0.95 (0.91-0.99)] and with left hemispheric CMRO2 [0.94 (0.90-0.98)], glucose consumption [0.87 (0.76-0.97)], and lactate production [0.89 (0.81-0.97)]. The correlation of NIRS with CBF was slightly better (P < 0.05) than that of CPP with CBF [0.89 (0.84-0.94)]. In this model of global cerebral hypertension, NIRS correlated well with CBF and measures of cerebral metabolism, and might be useful as a surrogate for CPP. Further studies are warranted to determine if NIRS is associated with these variables in focal cerebral injury.

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Quantitative assessment of near-infrared spectroscopy time course under hypercapnia using an a priori model-based fitting

Vagné

Bars

Deverdun³

et al. 2020

Computers in Biology and Medicine

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Early Diagnosis of Cerebral Ischemia in Cerebral Vasospasm by Oxygen-Pulse Near-Infrared Optical Topography

Abstract: Our method might detect cerebral ischemia before the onset of DIND and thus be clinically useful for assessing cerebral ischemia with vasospasm.

Cited by 4 publications

References 12 publications

Multichannel wearable fNIRS‐EEGsystem for long‐term clinical monitoring

Multichannel wearable fNIRS‐EEGsystem for long‐term clinical monitoring

The correlation between brain near-infrared spectroscopy and cerebral blood flow in piglets with intracranial hypertension

Quantitative assessment of near-infrared spectroscopy time course under hypercapnia using an a priori model-based fitting

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