This volume provides a comprehensive review of resistance induced by photodynamic therapy (PDT) in tumor cells. Understanding the underlying mechanisms in this process leads to the improvement of therapeutic modality, in combination with chemotherapy, immunotherapy, and radiotherapy. Photodynamic therapy is a minimally invasive therapeutic procedure that can exert a selective or preferential cytotoxic activity toward malignant cells. The procedure involves administration of an intrinsically non-toxic photosensitizing agent (PS) followed by irradiation at a wavelength corresponding to a visible absorption band of the sensitizer. In the presence of oxygen, a series of events lead to direct tumor cell death, damage to the microvasculature, and induction of a local inflammatory reaction. Studies reveal that PDT can be curative, particularly in early stage tumors and this volume explores the potential of PDT, but also reveals strategic approaches to overcome resistance in tumor cells.

Quantitative coronary angiography has become an invaluable tool for the interventional cardiologist, providing objective and reproducible measurements of coronary artery dimensions, which can be used to study progression or regression of coronary atherosclerosis, as well as the immediate and long term effects of percutaneous interventions. Until recently, this powerful imaging technology was confined to a small number of so-called high level institutions. Fortunately, with the development of digital cardiac imaging equipment and adaptation of cine-angiographically based computer software for on-line use in the catheterization room, quantitative coronary angiography is now available to all interventionalists. This book is a timely guide for the impending QCA user, providing practical as well as theoretical and scientific information. A comprehensive evaluation of the clinical usefulness of QCA is covered, from the fundamental principles through experimental validation studies, application to clinical trials of a wide range of pharmacological and interventional therapies in the full spectrum of clinical presentation of coronary disease syndromes, evaluation of the therapeutic efficacy of various new devices for coronary intervention, together with extensive presentation of its physiological, functional and anatomical correlations, by comparison with other intracoronary measurement and imaging techniques. In addition, evolving theories and concepts in the ever topical restenosis phenomenon' after percutaneous intervention, based on serial QCA studies, are presented and discussed and a potentially unifying methodological approach to further study of this ubiquitous problem is offered. Thisbook, thanks to the collaboration of many experts in the field of intracoronary imaging and measurement, provides stimulating, interesting and practical information, both for the academic scientist and practising clinician.

This book provides an up-to-date comprehensive overview of the exciting new developments shaping the current and future practice of radiation oncology. Advances in treatment planning and delivery, in biological targeted therapies combined with radiation and in functional and molecular imaging are all covered in a single volume. All of these advances are discussed by leading experts in the field and with a critical evaluation of their clinical relevance throughout.

The advances in neuroimaging technologies have led to substantial progress in understanding the neural mechanisms of cognitive functions. Thinking and reasoning have only recently been addressed by using neuroimaging techniques. The present book comprehensively explores current approaches and contributions to understanding the neural mechanisms of thinking in a concise and readable manner. It provides an insight into the state of the art and the potentials, but also the limitations of current neuroimaging methods for studying cognitive functions. The book will be a valuable companion for everyone interested in one of the most fascinating topics of cognitive neuroscience.

Essentials of Body MRI extensively covers the field, offering clear and detailed guidance on MRI as an invaluable tool for the primary diagnosis and problem solving of diseases of the body, including the abdomen, liver, pancreas, pelvis, heart, urinary tract, and great vessels. The beginning chapters focus on the physics, pulse sequences and other practical considerations related to body MR imaging to help the reader fully understand the imaging appearance of clinical disease. The remaining chapters discuss the clinical applications, with the topics spanning from the normal anatomic structures and diagnosis of abdominal, pelvic, cardiac and vascular diseases to the modality's role as a tool for solving diagnostic problems. The key points of each chapter are boxed as "Essentials to Remember" for rapid review and learning. Written in clear, accessible text, and featuring 887 figures and numerous tables, Essentials of Body MRI is a resource that the radiology resident and physician will turn to again and again.

A practical guide to radiation safety

Many health and scientific professionals require a basic understanding of radiological safety principles, even and especially if they are not specialists in radiological health. Principles of Radiological Health and Safety is designed for this purpose as well as a resource for safety personnel who also handle radiation safety duties. It is a text of basic concepts needed in broad-based protection programs, with real-world examples and practice problems to demonstrate principles and hone skills.

Resource data for practical problems in radiation protection are provided along with illustrative examples of their use. For example, modes and energies of radioactive transformation, radiation attenuation and absorption, dose coefficients, and environmental transport parameters are included for many of the common circumstances encountered in laboratory and industrial settings. these are cross referenced to standard compendiums for straightforward use when more in-depth listings need to be consulted. Other topics include:

• Atom structure and radioactivity
• Radiation protection standards and programs
• Radiation interactions and dose
• Environmental radiological assessment
• Radiation shielding
• Radon
• Internal radiation dosimetry
• Radioactive waste

Safety professionals as well as students and teachers will find Principles of Radiological Health and Safety to be an invaluable addition to their professional and academic libraries.

A widely used, classroom-tested text, Applied Medical Image Processing: A Basic Course delivers an ideal introduction to image processing in medicine, emphasizing the clinical relevance and special requirements of the field. Avoiding excessive mathematical formalisms, the book presents key principles by implementing algorithms from scratch and using simple MATLAB (R)/Octave scripts with image data and illustrations on downloadable resources or companion website. Organized as a complete textbook, it provides an overview of the physics of medical image processing and discusses image formats and data storage, intensity transforms, filtering of images and applications of the Fourier transform, three-dimensional spatial transforms, volume rendering, image registration, and tomographic reconstruction. This Second Edition of the bestseller: Contains two brand-new chapters on clinical applications and image-guided therapy Devotes more attention to the subject of color space Includes additional examples from radiology, internal medicine, surgery, and radiation therapy Incorporates freely available programs in the public domain (e.g., GIMP, 3DSlicer, and ImageJ) when applicable Beneficial to students of medical physics, biomedical engineering, computer science, applied mathematics, and related fields, as well as medical physicists, radiographers, radiologists, and other professionals, Applied Medical Image Processing: A Basic Course, Second Edition is fully updated and expanded to ensure a perfect blend of theory and practice.

Photodynamic Therapy: From Theory to Application brings attention to an exceptional treatment strategy, which until now has not achieved the recognition and breadth of applications it deserves. The authors, all experts and pioneers in their field, discuss the history and basic principles of PDT, as well as the fundamentals of the theory, methods, and instrumentation of clinical diagnosis and treatment of cancer. Non-oncological applications such as the use of PDT in control of parasites and noxious insects are also discussed. This book serves as a standard reference for researchers and students at all levels, clinical specialists interested in the topic and those in industry exploring new areas for development. A comprehensive exposition of both the theory and application of PDT, this book fills the gaps in the current literature by bringing together both basic understanding of the process of PDT and an expanded vision of its applications.

This atlas comprises a complete and extensive exposure of the spatial and temporal aspects of human cardiac development as seen with scanning electron microscopy. Apart from serving as a unique overview on cardiac development in the human embryo, this atlas gives an updated morphological reference of cardiac embryology for topographic correlation and enables the projection of experimental results in animals to the human situation.

Final FRCR Viva: 100 Cases and Revision Notes provides an invaluable collection of high quality cases to enable radiological trainees to fully prepare for the FRCR Part B Viva exam. Focussing solely on providing the knowledge necessary to pass one of the toughest exam components, 100 common viva topics are presented, each one accompanied by model answers and tips on how to discuss the case in question. Contains 100 typical exam cases, with accompanying scripts (model answers) and relevant key points Model answers enhanced with concise revision notes Highly illustrated with images and diagrams to aid understanding of differential diagnoses Authors include experienced consultant radiologists involved in FRCR training

The spectrum of occupational and environmental diseases has changed markedly in recent years. New industrial processes have led to the production and use of a wide range of chemicals, metals, and alloys, an increasing number of which have been reported to cause interstitial lung disease in exposed workers. Thus, while the workforce in coal mining and asbestos handling has decreased, new groups of workers are at risk of exposure to agents potentially responsible for pneumoconiosis. This well-illustrated book, written by internationally acclaimed experts, provides a comprehensive approach to modern imaging of environmental and occupational diseases of the chest. The first part of the book addresses the basic knowledge required to understand imaging in this context, while the second focuses on the imaging results achieved in a variety of specific disorders. There is particular emphasis on thin-section computed tomography since this technique facilitates the detection of early subclinical abnormalities.

Volume 17 is the second in a special topic series devoted to modern techniques in protein NMR, under the Biological Magnetic Resonance series. Volume 16, with the subtitle Modern Techniques in Protein NMR , is the first in this series. These two volumes present some of the recent, significant advances in the biomolecular NMR field with emphasis on developments during the last five years. We are honored to have brought together in these volume some of the world s foremost experts who have provided broad leadership in advancing this field. Volume 16 contains - vances in two broad categories: I. Large Proteins, Complexes, and Membrane Proteins and II. Pulse Methods. Volume 17 contains major advances in: I. Com- tational Methods and II. Structure and Dynamics. The opening chapter of volume 17 starts with a consideration of some important aspects of modeling from spectroscopic and diffraction data by Wilfred van Gunsteren and his colleagues. The next two chapters deal with combined automated assignments and protein structure determination, an area of intense research in many laboratories since the traditional manual methods are often inadequate or laborious in handling large volumes of NMR data on large proteins. First, Werner Braun and his associates describe their experience with the NOAH/DIAMOD protocol developed in their laboratory.

"Decision Making in Radiation Oncology" is a reference book designed to enable radiation oncologists, including those in training, to make diagnostic and treatment decisions effectively and efficiently. The design is based on the belief that a picture is worth a thousand words. Knowledge is conveyed through an illustrative approach using algorithms, schemas, graphics, and tables. Detailed guidelines are provided for multidisciplinary cancer management and radiation therapy techniques. In addition to the attention-riveting algorithms for diagnosis and treatment, strategies for the management of disease at individual stages are detailed for all the commonly diagnosed malignancies. Clinical trials that have yielded gold standard treatment and their results are documented in the schemas. Moreover, radiation techniques, including treatment planning and delivery, are presented in an illustrative way. This groundbreaking publication is an essential tool for physicians in their daily clinical practice."

The first edition of this definitive text ran to 24 chapters. The second edition, reflecting the explosive growth of interest in echo-enhancement, contains 44. The first section deals with some of the most important emerging issues and technologies and covers harmonic imaging, the use of echo-enhancers to provide quantitative information, and the application of enhanced power Doppler to tissue imaging. The second, on contrast echocardiography, explores the use of echo-enhancement during transesophageal imaging. One chapter describes the use of contrast-enhancement transesophageal imaging to determine coronary flow reserve and another gives a detailed account of the application of the technique to the evaluation of left ventricular function. Other authors describe the intraoperative use of contrast echocardiography and discuss the potential of myocardial contrast echocardiography to replace thallium scintigraphy. Another chapter covers the emerging technique of transient response imaging and its role in the assessment of myocardial perfusion, and two chapters are devoted to three-dimensional contrast echocardiographic assessment of myocardial perfusion. Use of echo-enhancement in the evaluation of peripheral circulation is discussed in chapters on carotid and peripheral arterial flow imaging and others that describe renal and hepatic vascular imaging. The newer applications of echo-enhancement outside the cardiovascular system are described in three chapters devoted to the visualization of tumour vasculature. The final chapters look to the future and cover the imaging of intramyocardial vasculature, the development of site-specific agents and the emergence of the new acoustically active agents.

Volume 16 marks the beginning of a special topic series devoted to modern techniques in protein NMR, under the Biological Magnetic Resonance series. This volume is being followed by Volume 17 with the subtitle Structure Computation and Dynamics in Protein NMR. Volumes 16 and 17 present some of the recent, significant advances in biomolecular NMR field with emphasis on developments during the last five years. We are honored to have brought together in these volumes some of the world's foremost experts who have provided broad leadership in advancing this field. Volume 16 contains advances in two broad categories: the first, Large Proteins, Complexes, and Membrane Proteins, and second, Pulse Methods. Volume 17, which will follow covers major advances in Computational Methods, and Structure and Dynamics. In the opening chapter of Volume 16, Marius Clore and Angela Gronenborn give a brief review of NMR strategies including the use of long range restraints in the structure determination of large proteins and protein complexes. In the next two chapters, Lewis Kay and Ron Venters and their collaborators describe state-of-t- art advances in the study of perdeuterated large proteins. They are followed by Stanley Opella and co-workers who present recent developments in the study of membrane proteins. (A related topic dealing with magnetic field induced residual dipolar couplings in proteins will appear in the section on Structure and Dynamics in Volume 17).

FRCS General Surgery: 500 SBAs and EMIs offers the most comprehensive coverage of practice questions for trainees preparing for the FRCS General Surgery exam. Presented in a clear layout, chapters are mapped to the syllabus to deliver structured revision in all the key topics. Featuring a wealth of practice questions and fully descriptive answers, this book provides the essential revision tool to maximise chances of exam success. 500 Single Best Answers and Extended Matching Items, reflecting topics encountered in the exam Answers feature concise, case-based descriptions to consolidate knowledge Highly illustrated to improve understanding of key concepts Extensive evidence-based references to relate theory to clinical practice

With the advent of CT we entered a new area of radiological imaging. Structures which rarely if ever were seen became apparent. In no part of the body was the impact of CT as profound as it was in the retroperitoneum. In the pre-CT area this region of the body could not be directly studied and only when gross abnormalities were present could they be appreciated. The best we could do was to try to identify a suspected process by studying its effect on surrounding organs whose position might have been affected by the growth. Urography, barium studies or angiography were employed in the hope that variation in the position of the vessels, ureter or bowel would lead us to the correct diagnosis. With computed tomography all this changed. Modern scanners, available to all today, permit us to appreciate details undreamed of only few years ago. The abundance of fat in this region helps to clearly show even the smallest of structures. We now have the ability to recognize small vessels, lymph nodes and fascial planes. We had a tool which permitted us to study structures which hitherto were only seen by the anatomist or during surgical dissection.

Magnetic Resonance Imaging is a very important clinical imaging tool. It combines different fields of physics and engineering in a uniquely complex way. MRI is also surprisingly versatile, 'pulse sequences' can be designed to yield many different types of contrast. This versatility is unique to MRI. This short book gives both an in depth account of the methods used for the operation and construction of modern MRI systems and also the principles of sequence design and many examples of applications. An important additional feature of this book is the detailed discussion of the mathematical principles used in building optimal MRI systems and for sequence design. The mathematical discussion is very suitable for undergraduates attending medical physics courses. It is also more complete than usually found in alternative books for physical scientists or more clinically orientated works.

Extracellular MRI and X-ray contrast agents are characterized by their phar- cokinetic behaviour.After intravascular injection their plasma-level time curve is characeterized by two phases. The agents are rapidly distributed between plasma and interstitial spaces followed by renal elimination with a terminal half-live of approximatly 1-2 hours. They are excreted via the kidneys in unchanged form by glomerular filtration. Extracellular water-soluble contrast agents to be applied for X-ray imaging were introduced into clinical practice in 1923. Since that time they have proved to be most valuable tools in diagnostics.They contain iodine as the element of choice with a sufficiently high atomic weight difference to organic tissue. As positive contrast agents their attenuation of radiation is higher compared with the attenuation of the surrounding tissue. By this contrast enhancement X-ray diagnostics could be improved dramatically. In 2,4,6-triiodobenzoic acid derivatives iodine is firmly bound. Nowadays diamides of the 2,4,6-triiodo-5-acylamino-isophthalic acid like iopromide (Ultravist, Fig. 1) are used as non-ionic (neutral) X-ray contrast agents in most cases [1].

Radiophannaceutical research has recently undergone a major change in direction. In past years it has been concerned mainly with the development of perfusion tracers, the biodistribution of which reflect the regional blood flow to areas of major organs such as the heart and brain. However, a major new direction of interest now lies in the development of receptor-binding radio-tracers which can be used to perform in-vivo characterisation of diseased tissues and it is likely that much of the future research in this field will follow this direction. The difficulties in developing such tracers are considerable. The researcher must first identify a promising target for radiopharmaceutical development. High specific activity radioactive molecules must be designed and synthesised which will both bind to the target receptor with high affinity, and also have the physicochemical characteristics which will allow them to reach the target site in sufficient quantity while at the same time showing minimal uptake in non-target tissues. Thus the knowledge base required for radiophannaceutical development has now expanded beyond the limits of radiopharmaceutical chemistry to include aspects of biochemistry, molecular biology and conventional drug design. The portfolio of basic knowledge required to support current radiopharmaceutical development is changing and scientists working in this arena need to be trained in this regard. At the same time, the very latest developments in the field need to be communicated to the scientific community in order to stimulate the advancement of this exciting new direction of research.

This book provides a detailed and comprehensive overview of the role of diagnostic imaging in the assessment and management of trauma and polytrauma in children. The coverage includes imaging of injuries to the head, thorax, abdomen, bone and musculoskeletal system, with careful attention to the newest imaging techniques, imaging during the course of recovery and imaging of complications. A series of illustrative cases underline the prognostic value of imaging. In addition, an individual chapter is devoted to diagnostic imaging in cases of child abuse. The book concludes by discussing informed consent and medicolegal issues related to the imaging of pediatric traumatic emergencies. "Imaging Trauma and Polytrauma in Pediatric Patients "will be invaluable in enabling radiologists and clinicians to identify the main features and signs of injuries on a wide range of imaging techniques, including X-ray, ultrasonography, computed tomography and magnetic resonance imaging.

This book is a practical and evidence-based guide to performing clinical musculoskeletal ultrasound for patients suffering from various rheumatic diseases. It represents the best current thinking on the role of ultrasonography in the assessment of pathology, diagnosis and treatment of these disorders. Following introductory chapters covering fundamental techniques and pitfalls of musculoskeletal ultrasound, the book discusses the uses of ultrasound to identify and monitor different rheumatic conditions, including rheumatoid arthritis, ankylosing spondylitis, osteoarthritis, pediatric musculoskeletal disorders, carpal tunnel syndrome and inflammatory conditions. It concludes with a chapter dedicated to ultrasound-guided interventional procedures, with illustrations depicting patients and probe positioning. Featuring contributions from a large international group of leaders in musculoskeletal ultrasonography, Musculoskeletal Ultrasonography in Rheumatic Diseases is an authoritative reference for rheumatologists, sonographers, radiologists and orthopedic specialists.

Recent advances in technology have opened up new possibilities in the diagnosis and treatment of cerebrospinal vascular diseases. It is now possible to use magnetic resonance imaging to map brain function and metabolism as an aid to diagnosis. Novel applications of magnetic resonance angiography allow three-dimensional imaging, and the magnetization transfer contrast technique gives us a new window on cerebral vascular function. This volume presents work in all these fields as well as previewing the techniques of endovascular surgery for cerebrospinal vascular diseases. These include modern stereotactic radiosurgery for arteriovenous malformations and for angiographically occult vascular malformations of the brain. This book presents an overview of the latest applications of technology to this rapidly developing and challenging field.