In this volume the policy of review by anonymous referees and minor correction by the editor has been continued, but perhaps should not be extended without an agreed policy statement by the Society. Our choice is minimal revision with rapid publication or proper review with some delay in publication. The editor wishes to express his gratitude to Ann Richardson, Joann Fish, Lance Johnson, and Philip Weinbrecht for their invaluable help in the preparation of this volume. Ian S. Longmuir v BRIEF HISTORY OF ISOTT The Society endured a long gestation period. During the 1960s its formation was discussed at a number of international meetings devoted to oxygen in biological systems. Prominent among a great number of such gatherings were those held at the Institute of Diseases of the Chest, London 1960; Bedford College, London 1963; Queen Elizabeth College, London 1963; and the Seventh Bad Oeynhausen Conference, 1967. At first, reservations were expressed about the desirability of forming a highly specialized society which might not achieve the "critical mass" necessary for its continued existence. However, the 1971 meeting in the Max Planck Institut fur Arbeitsphysiologie, Dortmund, answered these doubts, and Dr. Melvin Knisely commenced planning a very successful inaugural meeting in South Carolina. At this meeting in 1973 in Charleston and Clemson, the Society was formed with the customary remit of the promotion of scientific exchanges.

nd The 22 meeting of the International Society on Oxygen Transport to Tissue (LS. O. T. T. ) of which this volume is the scientific proceedings, was held in Istanbul, Turkey on August 22-26, 1994. It was a historical occasion in that it was almost 200 years to the day that one of the founding fathers of oxygen research, Antoine Lavoisier, on May 8, 1794 found his early demise at the hands of the guillotine. This spirit of history set the tone of the conference and in the opening lecture the contribution that this part of the world has given to the understanding of oxygen transport to tissue was highlighted. In particular, the contribution of Galen of Pergamon (129-200) was discussed who for the first time demon strated that blood flowed through the arteries and whose view on the physiology of the circulation dominated the ancient world for well over a millennium. A forgotten chapter in the history of the circulation of the blood is the contribution made by Ibn al Nafis of Damascus (1210-1280) who for the first time described the importance of the pulmonary circulation by stating that all venous blood entering the right ventricle ofthe heart passes to the left ventricle, not through pores in the septum of the heart as had been postulated by Galen, but through the circulation of the lungs.

The International Society on Oxygen Transport to Tissue (ISOTT, www. isott. info) is an interdisciplinary society comprising about 250 members worldwide. Its purpose is to further the understanding of all aspects of the processes involved in the transport of oxygen from the air to its ultimate consumption in the cells of the various organs of the body. The annual meeting brings together scientists, engineers, clinicians and mathematicians in a unique int- national forum for the exchange of information and knowledge, the updating of participants on latest developments and techniques, and the discussion of controversial issues within the field of oxygen transport to tissue. Founded in 1973, the society has been the leading platform for the presentation of many of the technological and conceptual developments within the field both at the meetings themselves and in the proceedings of the society. These have been published first by Plenum Publishing (1973), then by Kluwer Academic/Plenum Publishers and presently by Springer Publishing, all in the Advances In Expe- mental Medicine and Biology Series. The 36th Annual ISOTT conference was held in Sapporo, Japan during August 3–7, 2008. It was the second occasion that the ISOTT meeting was held in Japan; the first one was held in the same place in 1987 organized by Professor Masaji Mochizuki.

This book contains the refereed contributions from the 43rd annual meeting of ISOTT. The annual meetings of ISOTT bring together scientists from various fields (medicine, physiology, mathematics, biology, chemistry, physics, engineering, etc.) in a unique international forum. ISOTT conferences are a place where an atmosphere of interaction is created, where many questions are asked after each presentation and lively discussions occur at a high scientific level. This vivid interaction is the main motivation for members to participate and gain new ideas and knowledge in the broad field of oxygen transport to tissue. The proceedings include sessions covered various research topics including Multi-Modal Imaging/Spectroscopy & Instrumentation; Cancer Metabolism; Cellular Hypoxia and Mitochondrial Function; Brain Oxygenation and Function; Other Organ Function and Metabolism; Oxygen Transport in Sports, Diseases and Clinical Care; Acupuncture, Meridians, and Primo Vascular System; EPR, MRS and MRI.

Since its inception in 1973, The International Society on Oxygen Transport to Tissue (ISOTT) has provided a unique forum to facilitate and encourage scientific interaction and debate. Welcoming scientists and clinicians from a broad spectrum of disciplines, each with their own particular skills and expertise, ISOTT unites them under the common theme of oxygen transport. The successful blend of scientific presentations and informal discussion which characterizes ISOTT is epitomized best by the many fundamental discoveries and technical advancements which it has spawned. The breadth and strengths of The Society's scientific base promotes the rapid progression of ideas from theoretical concepts to rigorous scientific testing and often, ultimately to the clinical arena. Each publication of the ISOTT proceedings has been recognized by Science Citation Index listing and the papers frequently establish scientific precedents and become considered as standard works in their respective fields. The 21st ISOTT Meeting was held in San Diego from August 14th through August 18th, 1993. The San Diego Meeting attracted about 150 registrants and 40 accompanying persons. Ten state-of-the-art lectures were presented by international experts in ~ transport and there were in addition two symposia -one dealing with assessment of tissue hypoxia and the other with functional heterogeneity in different organ systems. There were 100 free communications, consisting of posters accompanied by an abbreviated oral summary. All manuscripts were reviewed by the Editors for form and content, but as is customary for the ISOTT proceedings, rigorous scientific peer review was not undertaken.

The 30th scientific meeting of the International Society on Oxygen Transport to Tissue (ISOTT) was held at the Western Conference Centre, UMIST, Manchester, in August 2002. It was attended by some 96 delegates and accompanying persons and there were 128 presentations.

The International Society of Oxygen Transport to Tissue (ISOTT) was founded in 1973 to provide a forum for bioengineers, basic scientists, physiologists, and physicians to discuss new data, original theories, new interpretations of old data, and new technologies for the measurement of oxygen. At each annual meeting all posters are presented orally along with plenary lectures, and all presentations are given in a general session attended by everyone. Each meeting has had a specific focus, ranging from neonatology to physical chemistry to cancer biology. The Society has helped to build many careers, through opportunities to meet leaders in the field, and through awards made to young physicians and scientists. The Society also, through cross fertilization of ideas and scientific comradery, has inspired many breakthroughs in clinical medicine that now benefit mankind. I find myself president of the society after having been a winner of the Melvin Knisely Award for young scientists, in 1991. The 2003 meeting emphasized the role of oxygen and oxygen measurement in tumor growth, metastasis, physiology, and treatment resistance. Additionally, however, completely novel approaches to measurement of tissue oxygen were presented (notably work by Dr. Takahashi) and molecular methods for estimating tissue oxygen were evaluated. Papers discussing other aspects of oxygen measurement and pathophysiology were presented including in vivo ESR spectroscopy (notably including Dr. Swartz and colleagues), exercise physiology, organ transplant outcome (discussed by Dr. Cicco, our 2004 president), circulatory physiology, and cerebral oxygenation (notably including Dr. Chance).

The book contains the refereed contributions from the 45th Annual Meeting of the International Society on Oxygen Transport to Tissue (ISOTT) 2017. This volume covers cross-disciplinary work on a broad range of topics related to the dynamics of oxygen transport: microcirculation and vascular medicine; O2 deficiency and its impact on molecular processes in cells and tissues; cellular metabolism and mitochondrial function; multimodal functional imaging; mathematical modeling; the clinical relevance of oxygen supply as well as therapeutic interventions (e.g. in oncology or critical care medicine). The annual meetings of ISOTT bring together scientists from diverse fields (medicine, physiology, mathematics, biology, chemistry, physics, engineering, etc.) in a unique international forum. The book includes sections on brain oxygenation and function, NIRS oxygenation measurements, tumor oxygenation, cell metabolism, tissue oxygenation and treatment, methodical aspects of O2 measurements and physicochemical aspects of oxygen diffusion. Chapters 3, 24, 49 and 51 of this book are open access under a CC BY 4.0 license.

This comprehensive survey covers all aspects of oxygen delivery to tissue, including blood flow and its regulation as well as oxygen metabolism. Special attention is paid to methods of oxygen measurement in living tissue and application of these technologies to understanding physiological and biochemical basis for pathology related to tissue oxygenation. This multidisciplinary book is designed to bring together experts and students from a range of research fields.