Medical optics
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Recent Submissions
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Cerebral and systemic physiological effects of wearing face masks in young adults
(National Academy of Sciences of the United States of America, 2021-10-12)
Article
Open AccessThe COVID-19 pandemic led to widespread mandates requiring the wearing of face masks, which led to debates on their benefits and possible adverse effects. To that end, the physiological effects at the systemic and at the ... -
Blood flow response to orthostatic challenge identifies signatures of the failure of static cerebral autoregulation in patients with cerebrovascular disease
(BMC, 2021-04-09)
Article
Open AccessBackground The cortical microvascular cerebral blood flow response (CBF) to different changes in head-of-bed (HOB) position has been shown to be altered in acute ischemic stroke (AIS) by diffuse correlation spectroscopy ... -
Neurodevelopmental profile in children with benign external hydrocephalus syndrome. A pilot cohort study
(Springer, 2021-05-10)
Article
Open AccessThe management of children with benign external hydrocephalus (BEH) remains controversial. Most BEH children do well in the long-term, but a substantial number have temporary or permanent psychomotor delays. The study aims ... -
Cerebral oxygenation and blood flow in normal term infants at rest measured by a hybrid near-infrared device (BabyLux)
(Nature, 2019-07-02)
Article
Open Access -
Liquid phantoms for near-infrared and diffuse correlation spectroscopies with tunable optical and dynamic properties
(OSA, 2018-04-04)
Article
Open AccessWe present the recipe and characterization for preparing liquid phantoms that are suitable for both near-infrared spectroscopy and diffuse correlation spectroscopy. The phantoms have well-defined and tunable optical and ... -
Cerebral vasoreactivity in response to a headof-bed position change is altered in patients with moderate and severe obstructive sleep apnea
(PLOS, 2018-03-18)
Article
Open AccessObstructive sleep apnea (OSA) can impair cerebral vasoreactivity and is associated with an increased risk of cerebrovascular disease. Unfortunately, an easy-to-use, non-invasive, portable monitor of cerebral vasoreactivity ... -
Transcranial diffuse optical assessment of the microvascular reperfusion after thrombolysis for acute ischemic stroke
(OSA, 2018-02-21)
Article
Open AccessIn this pilot study, we have evaluated bedside diffuse optical monitoring combining diffuse correlation spectroscopy and near-infrared diffuse optical spectroscopy to assess the effect of thrombolysis with an intravenous ... -
Concurrent measurement of cerebral hemodynamics and electroencephalography during transcranial direct current stimulation
(SPIE, 2018-01-25)
Article
Open AccessTranscranial direct current stimulation (tDCS) is currently being used for research and treatment of some neurological and neuropsychiatric disorders, as well as for improvement of cognitive functions. In order to better ... -
Time-resolved near infrared light propagation using frequency domain superposition
(OSA, 2017-12-04)
Article
Open AccessTime-resolved temporal point spread function (TPSF) measurement of near infrared spectroscopic (NIRS) data allows the estimation of absorption and reduced scattering properties of biological tissues. Such analysis requires ... -
Compact, multi-exposure speckle contrast optical spectroscopy (SCOS) device for measuring deep tissue blood flow
(OSA, 2017-12-20)
Article
Open AccessSpeckle contrast optical spectroscopy (SCOS) measures absolute blood flow in deep tissue, by taking advantage of multi-distance (previously reported in the literature) or multi-exposure (reported here) approach. This method ... -
Depth sensitivity of frequency domain optical measurements in diffusive media
(OSA, 2017-06-01)
Article
Open AccessThe depth sensitivity functions for AC amplitude, phase (PH) and DC intensity signals have been obtained in the frequency domain (where the source amplitude is modulated at radio-frequencies) by making use of analytical ... -
Pre-clinical longitudinal monitoring of hemodynamic response to anti-vascular chemotherapy by hybrid diffuse optics
(OSA, 2017-04-19)
Article
Open AccessThe longitudinal effect of an anti-vascular endothelial growth factor receptor 2 (VEGFR-2) antibody (DC 101) therapy on a xenografted renal cell carcinoma (RCC) mouse model was monitored using hybrid diffuse optics. Two ...
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