Determination of absorption changes from moments of distributions of times of flight of photons: optimization of measurement conditions for a two-layered tissue model
A Liebert, H Wabnitz, C Elster - Journal of Biomedical Optics, 2012 - spiedigitallibrary.org
Time-resolved near-infrared spectroscopy allows for depth-selective determination of
absorption changes in the adult human head that facilitates separation between cerebral …
absorption changes in the adult human head that facilitates separation between cerebral …
Time-resolved multidistance near-infrared spectroscopy of the adult head: intracerebral and extracerebral absorption changes from moments of distribution of times of …
A Liebert, H Wabnitz, J Steinbrink, H Obrig, M Möller… - Applied …, 2004 - opg.optica.org
We report on multidistance time-resolved diffuse reflectance spectroscopy of the head of a
healthy adult after intravenous administration of a bolus of indocyanine green. Intracerebral …
healthy adult after intravenous administration of a bolus of indocyanine green. Intracerebral …
Intra-and extracerebral changes of hemoglobin concentrations by analysis of moments of distributions of times of flight of photons
A Liebert, H Wabnitz, J Steinbrink, H Obrig… - … on Biomedical Optics, 2003 - opg.optica.org
NIRS signals measured on the adult head contain contributions from the brain and from
overlying tissue. It was shown recently that measured distributions of times of flight (DTOF) of …
overlying tissue. It was shown recently that measured distributions of times of flight (DTOF) of …
[PDF][PDF] In vivo quantification of absorption changes in the human brain by time-domain diffuse near-infrared spectroscopy
A Jelzow - 2013 - depositonce.tu-berlin.de
Measurement of the brain activity is essential for the understanding of brain function and
potentially for the diagnosis of brain pathologies. Human brain activity is accompanied by …
potentially for the diagnosis of brain pathologies. Human brain activity is accompanied by …
Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons
A Liebert, H Wabnitz, D Grosenick, M Möller… - Applied …, 2003 - opg.optica.org
A novel method for the determination of the optical properties of tissue from time-domain
measurements is presented. The data analysis is based on the evaluation of the first …
measurements is presented. The data analysis is based on the evaluation of the first …
Improving the depth sensitivity of time-resolved measurements by extracting the distribution of times-of-flight
M Diop, K St. Lawrence - Biomedical optics express, 2013 - opg.optica.org
Time-resolved (TR) techniques provide a means of discriminating photons based on their
time-of-flight. Since early arriving photons have a lower probability of probing deeper tissue …
time-of-flight. Since early arriving photons have a lower probability of probing deeper tissue …
Reconstruction of light absorption changes in the human head using analytically computed photon partial pathlengths in layered media
Functional near infrared spectroscopy has been used in recent decades to sense and
quantify changes in hemoglobin concentrations in the human brain. This noninvasive …
quantify changes in hemoglobin concentrations in the human brain. This noninvasive …
Low-resolution mapping of the effective attenuation coefficient of the human head: a multidistance approach applied to high-density optical recordings
Near infrared (NIR) light has been widely used for measuring changes in hemoglobin
concentration in the human brain (functional NIR spectroscopy, fNIRS). fNIRS is based on …
concentration in the human brain (functional NIR spectroscopy, fNIRS). fNIRS is based on …
Time-resolved absorption and hemoglobin concentration difference maps: a method to retrieve depth-related information on cerebral hemodynamics.
Time-resolved diffuse optical methods have been applied to detect hemodynamic changes
induced by cerebral activity. We describe a near infrared spectroscopic (NIRS) …
induced by cerebral activity. We describe a near infrared spectroscopic (NIRS) …
Determining changes in NIR absorption using a layered model of the human head
J Steinbrink, H Wabnitz, H Obrig… - Physics in Medicine …, 2001 - iopscience.iop.org
A theoretical approach is presented to determine absorption changes in different
compartments of a layered structure from distributions of times of flight of photons. In addition …
compartments of a layered structure from distributions of times of flight of photons. In addition …
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