Highly accurate thermal flow microsensor for continuous and quantitative measurement of cerebral blood flow

Verfasser / Beitragende:
[Chunyan Li, Pei-ming Wu, Zhizhen Wu, Kanokwan Limnuson, Neal Mehan, Cameron Mozayan, Eugene Golanov, Chong Ahn, Jed Hartings, Raj Narayan]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biomedical Microdevices, 17/5(2015-10-01), 1-7
Format:
Artikel (online)
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024 7 0 |a 10.1007/s10544-015-9992-3  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10544-015-9992-3 
245 0 0 |a Highly accurate thermal flow microsensor for continuous and quantitative measurement of cerebral blood flow  |h [Elektronische Daten]  |c [Chunyan Li, Pei-ming Wu, Zhizhen Wu, Kanokwan Limnuson, Neal Mehan, Cameron Mozayan, Eugene Golanov, Chong Ahn, Jed Hartings, Raj Narayan] 
520 3 |a Cerebral blood flow (CBF) plays a critical role in the exchange of nutrients and metabolites at the capillary level and is tightly regulated to meet the metabolic demands of the brain. After major brain injuries, CBF normally decreases and supporting the injured brain with adequate CBF is a mainstay of therapy after traumatic brain injury. Quantitative and localized measurement of CBF is therefore critically important for evaluation of treatment efficacy and also for understanding of cerebral pathophysiology. We present here an improved thermal flow microsensor and its operation which provides higher accuracy compared to existing devices. The flow microsensor consists of three components, two stacked-up thin film resistive elements serving as composite heater/temperature sensor and one remote resistive element for environmental temperature compensation. It operates in constant-temperature mode (~2°C above the medium temperature) providing 20ms temporal resolution. Compared to previous thermal flow microsensor based on self-heating and self-sensing design, the sensor presented provides at least two-fold improvement in accuracy in the range from 0 to 200ml/100g/min. This is mainly achieved by using the stacked-up structure, where the heating and sensing are separated to improve the temperature measurement accuracy by minimization of errors introduced by self-heating. 
540 |a Springer Science+Business Media New York, 2015 
690 7 |a Thermal flow microsensor  |2 nationallicence 
690 7 |a Cerebral blood flow  |2 nationallicence 
690 7 |a Thin-film resistive element  |2 nationallicence 
690 7 |a Self-heating error  |2 nationallicence 
700 1 |a Li  |D Chunyan  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
700 1 |a Wu  |D Pei-ming  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
700 1 |a Wu  |D Zhizhen  |u Microsystem and BioMEMS Laboratory, University of Cincinnati, 45221, Cincinnati, OH, USA  |4 aut 
700 1 |a Limnuson  |D Kanokwan  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
700 1 |a Mehan  |D Neal  |u Department of Neurosurgery, Hofstra North Shore-LIJ School of Medicine, 11549, Hempstead, NY, USA  |4 aut 
700 1 |a Mozayan  |D Cameron  |u Department of Neurosurgery, Hofstra North Shore-LIJ School of Medicine, 11549, Hempstead, NY, USA  |4 aut 
700 1 |a Golanov  |D Eugene  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
700 1 |a Ahn  |D Chong  |u Microsystem and BioMEMS Laboratory, University of Cincinnati, 45221, Cincinnati, OH, USA  |4 aut 
700 1 |a Hartings  |D Jed  |u Department of Neurosurgery, UC College of Medicine, University of Cincinnati (UC) Neuroscience Institute, 45219, Cincinnati, OH, USA  |4 aut 
700 1 |a Narayan  |D Raj  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
773 0 |t Biomedical Microdevices  |d Springer US; http://www.springer-ny.com  |g 17/5(2015-10-01), 1-7  |x 1387-2176  |q 17:5<1  |1 2015  |2 17  |o 10544 
856 4 0 |u https://doi.org/10.1007/s10544-015-9992-3  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10544-015-9992-3  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Li  |D Chunyan  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wu  |D Pei-ming  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wu  |D Zhizhen  |u Microsystem and BioMEMS Laboratory, University of Cincinnati, 45221, Cincinnati, OH, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Limnuson  |D Kanokwan  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Mehan  |D Neal  |u Department of Neurosurgery, Hofstra North Shore-LIJ School of Medicine, 11549, Hempstead, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Mozayan  |D Cameron  |u Department of Neurosurgery, Hofstra North Shore-LIJ School of Medicine, 11549, Hempstead, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Golanov  |D Eugene  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Ahn  |D Chong  |u Microsystem and BioMEMS Laboratory, University of Cincinnati, 45221, Cincinnati, OH, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hartings  |D Jed  |u Department of Neurosurgery, UC College of Medicine, University of Cincinnati (UC) Neuroscience Institute, 45219, Cincinnati, OH, USA  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Narayan  |D Raj  |u Cushing Neuromonitoring Laboratory, Feinstein Institute for Medical Research, 11030, Manhasset, NY, USA  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biomedical Microdevices  |d Springer US; http://www.springer-ny.com  |g 17/5(2015-10-01), 1-7  |x 1387-2176  |q 17:5<1  |1 2015  |2 17  |o 10544