Measurements of Oxygen in Tissues: Overview and Perspectives on Methods

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Abstract
The goal of this manuscript is to provide a summary of the major techniques that currently are being applied to measure oxygenation of tissues in vivo. Oxygen is one of the key components of metabolism. Oxygen is also a major variable in many diseases, both with respect to the pathophysiological processes and influencing the efficacy of treatment. Unfortunately, however, the measurement of tissue oxygenation is non-trivial. Consequently many different methods have been developed to try to make this measurement. This paper presents a summary, largely in tabular form, of most of the current methods for assessing tissue oxygenation. The table attempts to cover the most pertinent aspects of the techniques and their applications, including their potential niche, limitations, and advantages. Citations are given for each method to point the reader in the direction of relevant literature.