Noninvasive Optical Quantification of Cerebral Venous Oxygen Saturation in Humans
نویسندگان
چکیده
منابع مشابه
Noninvasive optical quantification of cerebral venous oxygen saturation in humans.
RATIONALE AND OBJECTIVES Cerebral oxygen extraction, defined as the difference between arterial and venous oxygen saturations (SaO2 and SvO2), is a critical parameter for managing intensive care patients at risk for neurological collapse. Although quantification of SaO2 is easily performed with pulse oximetry or moderately invasive arterial blood draws in peripheral vessels, cerebral SvO2 is fr...
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The regulation of oxygen supply and consumption by the brain is a complex and dynamic process. The determination of the oxygen saturation of venous blood is an indirect means to assess local tissue oxygen saturation. Quantitatively measuring oxygen saturation is important to characterize the physiological or pathological state of tissue function. Noninvasive and reliable measurements can help t...
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Near infrared spectroscopy (NIRS) offers non-invasive assessment of oxygenation within the human brain (ScO2) by appreciating the different absorption of near infrared light by hemoglobin and oxyhemoglobin (Jobsis, 1977). Since the length the light has passed when traveling from the skin to the cortex and then returning to the skin remains unknown, there is a need to adjust the signal according...
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ژورنال
عنوان ژورنال: Academic Radiology
سال: 2014
ISSN: 1076-6332
DOI: 10.1016/j.acra.2013.10.013