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Vasilis Ntziachristos is a Greek American biomedical engineer, scientist, and inventor best known for his development of fundamental and translational research tools for imaging tissues based on fluorescence and optoacoustics.
Vasilis Ntziachristos is a Full Professor C4/W3 of Medicine and Electrical Engineering and holds the Chair of Biological Imaging at the Technical University of Munich. He is also the Director of the Institute of Biological and Medical Imaging at the Helmholtz Zentrum München and Director of Bioengineering at the Helmholtz Pioneer Campus. [1] He is a founding member and board member of the translational oncology center TranslaTUM and has led developments leading to the foundation of the Munich School of Bioengineering, where he currently serves as the Speaker of the Study Program. [2]
Ntziachristos studied electrical engineering at the Aristotle University of Thessaloniki, magnetic resonance as a Research Fellow at the Panum NMR Core Facility of the University of Copenhagen and at the Department of Radiology at Penn Medicine. He matriculated at the graduate program of the bioengineering department of the University of Pennsylvania, where he completed a master's degree and a PhD in bioengineering. His doctoral work, entitled "Concurrent magnetic resonance imaging and diffuse optical tomography to probe breast cancer", was carried out under the supervision of Britton Chance, Arjun Yodh and Mitchell Schnall.[ citation needed ] Following graduation Ntziachristos joined the faculty ranks of Harvard University and Massachusetts General Hospital, initially as an instructor (2000) and then as an Assistant Professor (2002) and Director of the Laboratory of Bio-optics and Molecular Imaging. In 2007, he was recruited to Munich into a joint call from the Technical University of Munich and Helmholtz Zentrum München. [3] [4]
In 2013, he founded the open-access research journal Photoacoustics, which is the only peer-reviewed journal dedicated entirely to photoacoustic (optoacoustic) research. He currently serves as an editor of Chief of the journal. The journal is served by a Board of highly prominent researchers in the field. [5]
For his work he has been awarded several prestigious awards, including the 2013 Gottfried Wilhelm Leibniz Prize from the German Research Foundation, considered to be the top scientific distinction in Germany and the 2015 Gold Medal of the World Molecular Imaging Society. For more information on his awards see the section on Prizes and Awards. His work often appears in the press. [6] [7] [8] The 2018 anniversary report of the Technical University of Munich features a chapter on Vasilis Ntziachristos, naming him as one of three examples of professors that shape the future of the Technical University of Munich. [9]
Ntziachristos is a globally recognized pioneer and entrepreneur in biomedical imaging. One of his focus areas is developing technology for fluorescence-guided surgical procedures for improving the accuracy of tumor removal. He and his collaborators published the first translational study in which a targeted fluorescent agent was systemically injected to distinguish tumor cells from healthy tissue during surgery. This approach is now being validated in several clinical trials . In 2012 Ntziachristos was a founding member of SurgVision, a company that has since commercialized technology from this research. SurgVision was recently acquired by Bracco Imaging S.p.A. [10]
Recently, Ntziachristos and colleagues have demonstrated early detection of esophageal cancer, significantly improving detection over white light endoscopy. Successful application of this performance may mean life-saving curative procedures for tens of thousands of individuals each year and healthcare savings of several billion EUR per year. [11] [12]
Another focus of Ntziachristos' research is developing optoacoustic techniques for breaking thought the penetration barriers of conventional optical imaging methods. His group develops hardware, image reconstruction, spectral unmixing and information processing techniques as well as applications in biology and medicine. Among many other inventions, he is the inventor of multispectral optoacoustic tomography (MSOT) and raster scan optoacoustic mesoscopy (RSOM), which are non-invasive imaging methods that simultaneously measure different parameters of tissue physiology and pathology non-invasively, allowing new ways to diagnose disease and monitor treatment. MSOT and RSOM are now used in a range of preclinical and clinical studies, including advancing characterization of psoriasis, [13] breast tumors, [14] metastatic melanoma [15] and inflammation in Crohn's disease. [16] MSOT has also been used to visualize metabolism within brown fat, [17] suggesting it may be effective for analyzing muscle energetics and lipid metabolism in a much simpler and more accessible way than with other techniques such as magnetic resonance imaging. Ntziachristos is a founder of iThera Medical GmbH, which currently commercializes optoacoustic technology and has placed systems around the world. [18]
The Technical University of Munich is a public research university in Munich, Germany. It specializes in engineering, technology, medicine, and applied and natural sciences.
Photoacoustic imaging or optoacoustic imaging is a biomedical imaging modality based on the photoacoustic effect. Non-ionizing laser pulses are delivered into biological tissues and part of the energy will be absorbed and converted into heat, leading to transient thermoelastic expansion and thus wideband ultrasonic emission. The generated ultrasonic waves are detected by ultrasonic transducers and then analyzed to produce images. It is known that optical absorption is closely associated with physiological properties, such as hemoglobin concentration and oxygen saturation. As a result, the magnitude of the ultrasonic emission, which is proportional to the local energy deposition, reveals physiologically specific optical absorption contrast. 2D or 3D images of the targeted areas can then be formed.
The Gottfried Wilhelm Leibniz Prize, or Leibniz Prize, is awarded by the German Research Foundation to "exceptional scientists and academics for their outstanding achievements in the field of research". Since 1986, up to ten prizes have been awarded annually to individuals or research groups working at a research institution in Germany or at a German research institution abroad. It is considered the most important research award in Germany.
The German Cancer Research Center is a national cancer research center based in Heidelberg, Germany. It is a member of the Helmholtz Association of German Research Centres, the largest scientific organization in Germany.
Bruce J. Tromberg is an American photochemist and a leading researcher in the field of biophotonics. He is the director of the National Institute of Biomedical Imaging and Bioengineering (NIBIB) within the National Institutes of Health (NIH). Before joining NIH, he was Professor of Biomedical Engineering at The Henry Samueli School of Engineering and of Surgery at the School of Medicine, University of California, Irvine. He was the principal investigator of the Laser Microbeam and Medical Program (LAMMP), and the Director of the Beckman Laser Institute and Medical Clinic at Irvine. He was a co-leader of the Onco-imaging and Biotechnology Program of the NCI Chao Family Comprehensive Cancer Center at Irvine.
The Max Delbrück Center for Molecular Medicine in the Helmholtz Association in Berlin is one of the 18 institutions that make up the Helmholtz Association. It combines basic molecular biology research with clinical research and is dedicated to the research foci of systems medicine and cardiovascular diseases. The research center is named after the Berlin-born biophysicist and Nobel laureate Max Delbrück. The center is headed by Maike Sander.
Biological imaging may refer to any imaging technique used in biology. Typical examples include:
Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), also known as Helmholtz Munich, is a member of the Helmholtz Association of German Research Centres. It was founded in 1960 and is a joint venture by the Federal Ministry of Education and Research and Bavarian State Ministry of Finance and Home.
Preclinical imaging is the visualization of living animals for research purposes, such as drug development. Imaging modalities have long been crucial to the researcher in observing changes, either at the organ, tissue, cell, or molecular level, in animals responding to physiological or environmental changes. Imaging modalities that are non-invasive and in vivo have become especially important to study animal models longitudinally. Broadly speaking, these imaging systems can be categorized into primarily morphological/anatomical and primarily molecular imaging techniques. Techniques such as high-frequency micro-ultrasound, magnetic resonance imaging (MRI) and computed tomography (CT) are usually used for anatomical imaging, while optical imaging, positron emission tomography (PET), and single photon emission computed tomography (SPECT) are usually used for molecular visualizations.
The IEEE Biomedical Engineering Award is a Technical Field Award of the IEEE given annually for outstanding contributions to the field of biomedical engineering. It was established in 2010.
Multi-spectral optoacoustic tomography (MSOT), also known as functional photoacoustic tomography (fPAT), is an imaging technology that generates high-resolution optical images in scattering media, including biological tissues. MSOT illuminates tissue with light of transient energy, typically light pulses lasting 1-100 nanoseconds. The tissue absorbs the light pulses, and as a result undergoes thermo-elastic expansion, a phenomenon known as the optoacoustic or photoacoustic effect. This expansion gives rise to ultrasound waves (photoechoes) that are detected and formed into an image. Image formation can be done by means of hardware or computed tomography. Unlike other types of optoacoustic imaging, MSOT involves illuminating the sample with multiple wavelengths, allowing it to detect ultrasound waves emitted by different photoabsorbing molecules in the tissue, whether endogenous or exogenous. Computational techniques such as spectral unmixing deconvolute the ultrasound waves emitted by these different absorbers, allowing each emitter to be visualized separately in the target tissue. In this way, MSOT can allow visualization of hemoglobin concentration and tissue oxygenation or hypoxia. Unlike other optical imaging methods, MSOT is unaffected by photon scattering and thus can provide high-resolution optical images deep inside biological tissues.
Sanjiv Sam Gambhir was an American physician–scientist. He was the Virginia and D.K. Ludwig Professor in Cancer Research, Chairman of the Department of Radiology at Stanford University School of Medicine, and a professor by courtesy in the departments of Bioengineering and Materials Science and Engineering at Stanford University. Additionally, he served as the Director of the Molecular Imaging Program at Stanford (MIPS), Canary Center at Stanford for Cancer Early Detection and the Precision Health and Integrated Diagnostics Center (PHIND). He authored 680 publications and had over 40 patents pending or granted. His work was featured on the cover of over 25 journals including the Nature Series, Science, and Science Translational Medicine. He was on the editorial board of several journals including Nano Letters, Nature Clinical Practice Oncology, and Science Translational Medicine. He was founder/co-founder of several biotechnology companies and also served on the scientific advisory board of multiple companies. He mentored over 150 post-doctoral fellows and graduate students from over a dozen disciplines. He was known for his work in molecular imaging of living subjects and early cancer detection.
Matthias H. Tschöp is a German physician and scientist. He is the chief executive officer and scientific director of Helmholtz Zentrum München, German Research Center for Environmental Health. He is also Alexander von Humboldt Professor and chair of metabolic diseases at Technical University of Munich and serves as an adjunct professor at Yale University.
Andrea Ablasser is a German immunologist, who works as a full professor of Life Sciences at the École Polytechnique Fédérale de Lausanne. Her research has focused on how the innate immune system is able to recognise virus-infected cells and pathogens.
Andreas Kjær is a Danish physician-scientist and European Research Council (ERC) advanced grantee. He is professor at the University of Copenhagen and chief physician at Rigshospitalet, the National University Hospital of Denmark. He is board certified in Nuclear Medicine and his research is focused on molecular imaging with PET and PET/MRI and targeted radionuclide therapies (theranostics) in cancer. His achievements include development of several new PET tracers that have reached first-in-human clinical use. He has published more than 400 peer-review articles, filed 10 patents, supervised more than 40 PhD students and received numerous prestigious scientific awards over the years. He is a member of the Danish Academy of Technical Sciences
Photoacoustic microscopy is an imaging method based on the photoacoustic effect and is a subset of photoacoustic tomography. Photoacoustic microscopy takes advantage of the local temperature rise that occurs as a result of light absorption in tissue. Using a nanosecond pulsed laser beam, tissues undergo thermoelastic expansion, resulting in the release of a wide-band acoustic wave that can be detected using a high-frequency ultrasound transducer. Since ultrasonic scattering in tissue is weaker than optical scattering, photoacoustic microscopy is capable of achieving high-resolution images at greater depths than conventional microscopy methods. Furthermore, photoacoustic microscopy is especially useful in the field of biomedical imaging due to its scalability. By adjusting the optical and acoustic foci, lateral resolution may be optimized for the desired imaging depth.
Stephen A. Boppart is a principal investigator at the Beckman Institute for Advanced Science and Technology at the University of Illinois at Urbana-Champaign, where he holds an Abel Bliss Professorship in engineering. He is a faculty member in the departments of electrical and computer engineering, bioengineering, and internal medicine. His research focus is biophotonics, where he has pioneered new optical imaging technologies in the fields of optical coherence tomography, multi-photon microscopy, and computational imaging.
Uğur Şahin is a German oncologist and immunologist. He is the founder and CEO of BioNTech, which developed one of the major vaccines against COVID-19. His main fields of research are cancer research and immunology.
Ulrike Protzer is a German virologist who has been a professor at the Chair of Virology at the Technical University of Munich (TUM) since 2007. Her primary field of study is virus-host interactions of the hepatitis B virus and her work is focused on developing new therapeutic approaches for the treatment of chronic hepatitis B infection and related secondary diseases. Since the beginning of the COVID-19 pandemic, the novel virus SARS-CoV-2 has also been one of her research areas, and she has been a prominent voice in German media on this topic.
Saak Victor Ovsepian is an Armenian-Irish neuroscientist best known for his research in neurobiology, neurotherapeutics and translational biosciences. He is a professor in biosciences at the University of Greenwich.
