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Radiation Physics for Medical Physicists

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The book may also be of interest to the large number of professionals, not only physicists, who in their daily occupations deal with various aspects of medical physics and have a need to improve their understanding of radiation physics. Medical physics is a rapidly growing specialty of physics, concerned with the application of physics to medicine mainly, but not exclusively, in the ap- plication of ionizing radiation to diagnosis and treatment of human disease. In contrast to other physics specialties, such as nuclear physics, solid-state physics, and high-energy physics, studies of modern medical physics attract a much broader base of professionals including graduate students in medi- cal physics, medical residents and technology students in radiation oncology and diagnostic imaging, students in biomedical engineering, and students in radiation safety and radiation dosimetry educational programs. These profes- sionals have diverse background knowledge of physics and mathematics, but they all have a common desire to improve their knowledge of the physics that underlies the application of ionizing radiation in diagnosis and treatment of disease. The main target audience for this book is graduate students in medical physics and these students are assumed to possess the necessary background in physics and mathematics to be able to follow and master the complete textbook. Medical residents, technology students and biomedical engineering students, on the other hand, may find certain sections too challenging or esoteric; however, there are many sections in the book that they may find useful and interesting in their studies. Candidates preparing for professional certification exams in any of the medical physics subspecialties should find the material useful and some of the material would also help candidates preparing for certification examinations in medical dosimetry or radiation- related medical specialties. Numerous textbooks that cover the various subspecialties of medical physics are available but they generally make a transition from elementary basic physics directly to the intricacies of the given medical physics subspe- cialty. The intent of this textbook is to provide the missing link between the elementary physics and the physics of the subspecialties. VIII Preface The textbook is based on notes that I developed over the past 25 years of teaching radiation physics to M.Sc. and Ph.D. students in medical physics at McGill University. It contains eight chapters, each chapter covering a spe- cific group of subjects related to radiation physics that, in my opinion, form the basic knowledge required from professionals working in contemporary medical physics. Most of the subjects covered in this textbook can be found discussed in greater detail in many other specialized physics texts, such as nuclear physics, quantum mechanics, modern physics, etc.; however, these texts are aimed at students in a specific physics specialty. They provide more in-depth knowledge of the particular specialty but provide no evident link with medical physics. Some of these important specialized texts are listed in the bibliography at the end of this book for the benefit of readers who wish to attain a better insight into the subjects discussed. To recognize the impor- tance of relevant history for understanding of modern physics, Appendix 1 provides short biographies on scientists whose work is discussed in this book.
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