NIR spectroscopic imaging to map hemoglobin + myoglobin oxygenation, their concentration and optical pathlength across a beating pig heart during surgery
نویسندگان
چکیده
منابع مشابه
Simultaneous imaging of total cerebral hemoglobin concentration, oxygenation, and blood flow during functional activation.
A simple instrument is demonstrated for high-resolution simultaneous imaging of total hemoglobin concentration and oxygenation and blood flow in the brain by combining rapid multiwavelength imaging with laser speckle contrast imaging. The instrument was used to image changes in oxyhemoglobin and deoxyhemoglobin and blood flow during cortical spreading depression and single whisker stimulation i...
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Concentration changes of haemoglobin and cytochromes indicative of tissue perfusion and oxygenation can be quantitatively evaluated from near-infrared (NIR) measurements of absorption and optical pathlength through tissue. The accuracy of such measurements is limited as current bedside instrumentation cannot measure optical pathlength. Using a recently developed phase-resolved spectroscopic tec...
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The constant motion of the beating heart presents an obstacle to clear optical imaging, especially 3D imaging, in small animals where direct optical imaging would otherwise be possible. Gating techniques exploit the periodic motion of the heart to computationally "freeze" this movement and overcome motion artifacts. Optically gated imaging represents a recent development of this, where image an...
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Introduction Since its reintroduction in the late nineties, the acceptation of the OPCAB surgery by the cardiovascular community has varied between 1% to 98% [1,2] . This large variability clearly reflects an incredible disparity in the acceptance of the procedure. The group from Leipzig initially proposed a series of indication regarding the procedure [3] . With time others have encourage a mo...
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ژورنال
عنوان ژورنال: Journal of Biophotonics
سال: 2011
ISSN: 1864-063X
DOI: 10.1002/jbio.201100031