Download or read book Simultaneous Characterization of Tumor Cellularity and the Warburg Effect with PET MRI and Hyperpolarized 13C MRSI written by Christian Hundshammer and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Modern oncology aims at patient-specific therapy approaches, which triggered the development of biomedical imaging techniques to synergistically address tumor biology at the cellular and molecular level. PET/MR is a new hybrid modality that allows acquisition of high-resolution anatomic images and quantification of functional and metabolic information at the same time. Key steps of the Warburg effect-one of the hallmarks of tumors-can be measured non-invasively with this emerging technique. The aim of this study was to quantify and compare simultaneously imaged augmented glucose uptake and LDH activity in a subcutaneous breast cancer model in rats (MAT-B-III) and to study the effect of varying tumor cellularity on image-derived metabolic information. Methods: For this purpose, we established and validated a multimodal imaging workflow for a clinical PET/MR system including proton magnetic resonance (MR) imaging to acquire accurate morphologic information and diffusion-weighted imaging (DWI) to address tumor cellularity. Metabolic data were measured with dynamic [18F]FDG-PET and hyperpolarized (HP) 13C-pyruvate MR spectroscopic imaging (MRSI). We applied our workflow in a longitudinal study and analyzed the effect of growth dependent variations of cellular density on glycolytic parameters. Results: Tumors of similar cellularity with similar apparent diffusion coefficients (ADC) showed a significant positive correlation of FDG uptake and pyruvate-to-lactate exchange. Longitudinal DWI data indicated a decreasing tumor cellularity with tumor growth, while ADCs exhibited a significant inverse correlation with PET standard uptake values (SUV). Similar but not significant trends were observed with HP-13C-MRSI, but we found that partial volume effects and point spread function artifacts are major confounders for the quantification of 13C-data when the spatial resolution is limited and major blood vessels are close to the tumor. Nevertheless, analysis of longitudinal data with varying tumor cellularity further detected a positive correlation between quantitative PET and 13C-data. Conclusions: Our workflow allows the quantification of simultaneously acquired PET, MRSI and DWI data in rodents on a clinical PET/MR scanner. The correlations and findings suggest that a major portion of consumed glucose is metabolized by aerobic glycolysis in the investigated tumor model. Furthermore, we conclude that variations in cell density affect PET and 13C-data in a similar manner and correlations of longitudinal metabolic data appear to reflect both biochemical processes and tumor cellularity

Download or read book The Chemistry of Hyperpolarized Magnetic Resonance Probes written by Eul Hyun Suh and published by Academic Press. This book was released on 2024-06-01 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Chemistry of Hyperpolarized Magnetic Resonance Probes, Volume Seven focuses on the chemical aspects of hyperpolarized NMR/MRI technology, with synthesis and characterizations of labeled compounds discussed from a practical point-of-view. A brief overview of the various hyperpolarization techniques are given, with the optimization of hyperpolarization conditions and the determination of critical parameters such as polarization level and T1 relaxation values described. A practical guide on the in vivo applications of hyperpolarized compounds in small animals is also included. Helps readers understand the structural features that determine the properties of HP-probes, such as chemical shift and relaxation times Aids readers in selecting stable isotope labeled probes for hyperpolarized NMR/MRI applications Teachers readers how to use the most appropriate synthetic methodology for the labeled probes Covers how to find the most suitable polarization technique (DNP, PHIP etc.) for the probe

Download or read book Molecular Imaging in Oncology written by Otmar Schober and published by Springer Nature. This book was released on 2020-06-27 with total page 911 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the most significant recent advances in oncological molecular imaging, covering the full spectrum from basic and preclinical research to clinical practice. The content is divided into five sections, the first of which is devoted to standardized and emerging technologies and probe designs for different modalities, such as PET, SPECT, optical and optoacoustic imaging, ultrasound, CT, and MRI. The second section focuses on multiscale preclinical applications ranging from advanced microscopy and mass spectroscopy to whole-body imaging. In the third section, various clinical applications are presented, including image-guided surgery and the radiomic analysis of multiple imaging features. The final two sections are dedicated to the emerging, crucial role that molecular imaging can play in the planning and monitoring of external and internal radiotherapy, and to future challenges and prospects in multimodality imaging. Given its scope, the handbook will benefit all readers who are interested in the revolution in diagnostic and therapeutic oncology that is now being brought about by molecular imaging.

Download or read book Biomarkers of the Tumor Microenvironment written by Lars A. Akslen and published by Springer. This book was released on 2017-08-02 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews different aspects of the cancer microenvironment, and its regulation and importance for tumor progression. Practical applications, in terms of how biomarkers are increasingly included in therapy protocols, will also be discussed. Biomarkers of the Tumor Microenvironment: Basic Studies and Practical Applications is aimed at research pathologists in the cancer field, and also cancer researchers from other backgrounds, especially those using morphology techniques and models focusing on cross-talk between different cell types in tumors.

Download or read book Glioma Imaging written by Whitney B. Pope and published by Springer Nature. This book was released on 2019-11-11 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers physiologic, metabolic and molecular imaging for gliomas. Gliomas are the most common primary brain tumors. Imaging is critical for glioma management because of its ability to noninvasively define the anatomic location and extent of disease. While conventional MRI is used to guide current treatments, multiple studies suggest molecular features of gliomas may be identified with noninvasive imaging, including physiologic MRI and amino acid positron emission tomography (PET). These advanced imaging techniques have the promise to help elucidate underlying tumor biology and provide important information that could be integrated into routine clinical practice. The text outlines current clinical practice including common scenarios in which imaging interpretation impacts patient management. Gaps in knowledge and potential areas of advancement based on the application of more experimental imaging techniques will be discussed. In reviewing this book, readers will learn: current standard imaging methodologies used in clinical practice for patients undergoing treatment for glioma and the implications of emerging treatment modalities including immunotherapy the theoretical basis for advanced imaging techniques including diffusion and perfusion MRI, MR spectroscopy, CEST and amino acid PET the relationship between imaging and molecular/genomic glioma features incorporated in the WHO 2016 classification update and the potential application of machine learning about the recently adopted and FDA approved standard brain tumor protocol for multicenter drug trials of the gaps in knowledge that impede optimal patient management and the cutting edge imaging techniques that could address these deficits

Download or read book Metabolism in Cancer written by Thorsten Cramer and published by Springer. This book was released on 2016-08-24 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents concise chapters written by internationally respected experts on various important aspects of cancer-associated metabolism, offering a comprehensive overview of the central features of this exciting research field. The discovery that tumor cells display characteristic alterations of metabolic pathways has significantly changed our understanding of cancer: while the first description of tumor-specific changes in cellular energetics was published more than 90 years ago, the causal significance of this observation for the pathogenesis of cancer was only discovered in the post-genome era. The first 10 years of the twenty-first century were characterized by rapid advances in our grasp of the functional role of cancer-specific metabolism as well as the underlying molecular pathways. Various unanticipated interrelations between metabolic alterations and cancer-driving pathways were identified and currently await translation into diagnostic and therapeutic applications. Yet the speed, quantity, and complexity of these new discoveries make it difficult for researchers to keep up to date with the latest developments, an issue this book helps to remedy.

Download or read book The Handbook of Biomarkers written by Kewal K. Jain and published by Springer Science & Business Media. This book was released on 2010-02-06 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of the thousands of biomarkers that are currently being discovered, relatively few are being validated for further applications, and the potential of a biomarker can be quite difficult to evaluate. To aid in this imperative research, Dr. Kewal K. Jain’s Handbook of Biomarkers thoroughly describes many different types of biomarkers and their discovery using various "-omics" technologies, such as proteomics and metabolomics, along with the background information needed for the evaluation of biomarkers as well as the essential procedures for their validation and use in clinical trials. With biomarkers described first according to technologies and then according to various diseases, this detailed book features the key correlations between diseases and classifications of biomarkers, which provides the reader with a guide to sort out current and future biomarkers. Comprehensive and cutting-edge, The Handbook of Biomarkers serves as a vital guide to furthering our understanding of biomarkers, which, by facilitating the combination of therapeutics with diagnostics, promise to play an important role in the development of personalized medicine, one of the most important emerging trends in healthcare today.

Download or read book Advanced Diffusion Encoding Methods in MRI written by Daniel Topgaard and published by Royal Society of Chemistry. This book was released on 2020-08-17 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: The medical MRI community is by far the largest user of diffusion NMR techniques and this book captures the current surge of methods and provides a primary source to aid adoption in this field. There is a trend to adapting the more advanced diffusion encoding sequences developed by NMR researchers within the fields of porous media, chemical engineering, and colloid science to medical research. Recently published papers indicate great potential for improved diagnosis of the numerous pathological conditions associated with changes of tissue microstructure that are invisible to conventional diffusion MRI. This book disseminates these recent developments to the wider community of MRI researchers and clinicians. The chapters cover the theoretical basis, hardware and pulse sequences, data analysis and validation, and recent applications aimed at promoting further growth in the field. This is a fast moving field and chapters are written by key MRI scientists that have contributed to the successful translation of the advanced diffusion NMR methods to the context of medical MRI, from global locations.

Download or read book Compromised Perfusion written by K. Messmer and published by S. Karger AG (Switzerland). This book was released on 1996 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compromised perfusion indicates the inability of the cardiovascular system to sustain the normal distribution of blood flow within the entire body and can be defined as a reduction of perfusion pressure leading to the exclusion of single capillaries or groups of capillaries. Occurring in patients subjected to shock, trauma, extensive surgery and organ transplantation, it reduces the surface area available for exchange of nutrients and metabolites with the consequence of tissue hypoxia and accumulation of waste products. To counteract compromised perfusion hypertonic/hyperoncotic saline/dextran solutions are used efficiently. This book presents an overview of the most recent findings from studies investigating compromised perfusion. The selected contributions discuss the mechanistic effects and side effects of small volume resuscitation, as well as specific effects of dextran in the field of organ conservation and post-ischemic leukocyte/endothelium interaction. Furthermore, specific aspects of the biology and pathophysiology of microvascular endothelium are considered. Providing a critical review of recent advances, this volume serves as an excellent source of information for all those interested in both clinical and experimental microcirculation research.

Download or read book The Biology of Tumors written by Enrico Mihich and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ninth Annual Pezcoller Symposium entitled "The Biology of Tumors" was held in Rovereto, Italy, June 4-7, 1997. It focused on the genetic mechanisms underlying het erogeneity of tumor cell populations and tumor cell differentiation, on interactions be tween tumor cells and cells of host defenses, and the mechanisms of angiogenesis. With presentations at the cutting edge of progress and stimulating discussions, this symposium addressed issues related to phenomena concerned with cell regulation and cell interactions as determined by activated genes through the appropriate and timely media tion of gene products. Important methodologies that would allow scientists to measure dif ferentially genes and gene products and thus validate many of the mechanisms of control currently proposed were considered, as were the molecular basis of tumor recognition by the immune system, interactions between cells and molecular mechanisms of cell regula tion as they are affected by or implemented through these interactions. The molecular and cellular mechanisms of tumor vascularization were also discussed. It was recognized that angiogenesis provides a potential site of therapeutic intervention and this makes it even more important to understand the mechanisms underlying it. We wish to thank the participants in the symposium for their substantial contribu tions and their participation in the spirited discussions that followed. We would also like to thank Drs.

Download or read book Tumor Models in Cancer Research written by Beverly A. Teicher and published by Springer Science & Business Media. This book was released on 2001-11-07 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beverly A. Teicher and a panel of leading experts comprehensively describe for the first time in many years the state-of-the-art in animal tumor model research. The wide array of models detailed form the basis for the selection of compounds and treatments that go into clinical testing of patients, and include syngeneic models, human tumor xenograft models, orthotopic models, metastatic models, transgenic models, and gene knockout models. Synthesizing many years experience with all the major in vivo models currently available for the study of malignant disease, Tumor Models in Cancer Research provides preclinical and clinical cancer researchers alike with a comprehensive guide to the selection of these models, their effective use, and the optimal interpretation of their results.

Download or read book Genitourinary Radiology written by N. Reed Dunnick and published by Lippincott Williams & Wilkins. This book was released on 2017-09-19 with total page 2105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previously known as the Textbook of Uroradiology, the newly retitled Genitourinary Radiology continues to bring you top-flight expertise in interpreting imaging studies of the genitourinary tract. A team of leading authorities walks you through the full range of relevant modalities and findings for each anatomical region, providing a multitude of high-quality representative images that capture the characteristic appearance of the conditions you’re likely to encounter. The result remains an indispensable resource for diagnosing genitourinary diseases and disorders.

Download or read book Hybrid Cardiac Imaging written by Stephan G. Nekolla and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This clinically oriented book provides an up-to-date review on the various hybrid imaging modalities that may be employed for the purpose of cardiac imaging. After discussion of generic aspects of hybrid imaging, SPECT/CT, PET/CT, and PET/MRI are each considered in depth. In addition, information is provided on upcoming technologies, such as dedicated so-called fast cardiac cameras (CZT detector technology) and novel probes and radiotracers. A wide variety of topics are addressed, including important technological aspects, possible applications, imaging protocols, peculiarities of the available modalities, radiation exposure, and dose reduction. Last but not least, an estimation of the cost efficiency of dedicated and hybrid imaging devices in cardiology is provided and possible scenarios with respect to health care economics are envisioned. Hybrid Cardiac Imaging will be of particular value for nuclear medicine specialists, cardiologists, and radiologists and will also be of interest to medical physicists, medical technicians, and cardiothoracic surgeons. .

Download or read book Dynamic Brain Imaging written by Hyder Fahmeed and published by Humana Press. This book was released on 2008-10-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a picture is worth a thousand words, then dynamic images of brain activity certainly warrant many, many more. This book will help users learn to decipher the dynamic imaging data that will be critical to our future understanding of complex brain functions. In recent years, there have been unprecedented methodological advancements in the imaging of brain activity. These techniques allow the measurement of everything from neural activity (e.g., membrane potential, ion ?ux, neurotransmitter ?ux) to energy metabolism (e.g., glucose consumption, oxygen consumption, creatine kinase ?ux) and functional hyperemia (e.g., blood ?ow, volume, oxygenation). This book deals with a variety of magnetic resonance, electrophysiology, and optical methods that are often used to measure some of these dynamic processes. All chapters were written by leading experts, spanning three continents, specializing in state-of-the-art methods. Brie?y, the book has ?ve sections. In the introductory section, there are two chapters; the ?rst one contains a brief pre- ble to dynamic brain imaging and the other presents a novel, analytical approach to processing of dynamically acquired data. The second section has four chapters and delves into a wide range of optical imaging methods. I am privileged to include a chapter from Lawrence B. Cohen, considered by many to be the authority on optical imaging and spectroscopy, both in vitro and in vivo [Cohen LB (1973) Physiol Rev.

Download or read book Molecular Imaging in Oncology written by E. Edmund Kim and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a report on updated techniques, instrumentation and clinical application of PET, MRI and MRS in cancer management.

Download or read book Targeted Molecular Imaging written by Michael J. Welch and published by Taylor & Francis. This book was released on 2012-02-24 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Targeted Molecular Imaging covers the development of novel diagnostic approaches that use an imaging probe and agent to noninvasively visualize cellular processes in normal and disease states. It discusses the concept, development, preclinical studies, and, in many cases, translation to the clinic of targeted imaging agents. The many case studies t

Download or read book Magnetic Resonance Elastography written by Sudhakar K. Venkatesh and published by Springer. This book was released on 2014-10-01 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first book to cover the groundbreaking development and clinical applications of Magnetic Resonance Elastography, this book is essential for all practitioners interested in this revolutionary diagnostic modality. The book is divided into three sections. The first covers the history of MRE. The second covers technique and clinical applications of MRE in the liver with respect to fibrosis, liver masses, and other diseases. Case descriptions are presented to give the reader a hands-on approach. The final section presents the techniques, sequence and preliminary results of applications in other areas of the body including muscle, brain, lung, heart, and breast.