Patient Care in Imaging Technology pdf epub mobi txt 电子书 下载 2026

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出版者:Lippincott Williams & Wilkins

作者:Lillian S. Torres

出品人:

页数:352

译者:

出版时间:2009-2-3

价格:USD 61.95

装帧:Paperback

isbn号码:9780781771832

丛书系列:

图书标签:

• 医学影像
• 患者护理
• 放射技术
• 影像技术
• 医疗保健
• 诊断影像
• 临床实践
• 医学教育
• 影像设备
• 安全规范

Imaging Science: Principles and Innovations Overview: This comprehensive volume delves into the fundamental scientific principles that underpin modern imaging technologies, exploring the theoretical frameworks and the cutting-edge innovations that continue to revolutionize the field. It is designed for a broad audience, including students of physics, engineering, biomedical sciences, and medical imaging, as well as researchers and practitioners seeking a deeper understanding of the underlying science driving imaging advancements. The book meticulously dissects the physical phenomena employed in various imaging modalities, moving beyond a purely descriptive approach to elucidate the elegant mathematics and physics that govern their operation. It emphasizes the intricate interplay between the physical principles, the technological implementation, and the resulting diagnostic or therapeutic capabilities. Key Concepts and Content: The book begins with a thorough exploration of the electromagnetic spectrum and its interaction with matter, laying the groundwork for understanding how different imaging modalities capture information. It meticulously details the physics of X-ray generation and attenuation, explaining the historical significance of radiography and computed tomography (CT). The principles of contrast mechanisms, beam hardening, and image reconstruction algorithms are discussed in depth, providing a clear understanding of how detailed cross-sectional images are generated. Analogies and real-world examples are employed to demystify complex concepts such as Radon transform and filtered back-projection. A significant portion of the text is dedicated to magnetic resonance imaging (MRI). It meticulously explains the quantum mechanical principles of nuclear magnetic resonance (NMR), including spin, precession, relaxation times (T1 and T2), and the role of magnetic fields and radiofrequency pulses. The physics of gradient coils, k-space sampling, and various pulse sequences (e.g., spin-echo, gradient-echo) are elucidated, highlighting how these elements contribute to image contrast and spatial resolution. The book also addresses advanced MRI techniques such as diffusion-weighted imaging (DWI), perfusion imaging, and functional MRI (fMRI), explaining the underlying physiological and physical basis for their applications in detecting and characterizing tissue abnormalities. Ultrasound imaging is explored through the lens of wave propagation, acoustic impedance, reflection, refraction, and Doppler effect. The physics of piezoelectric transducers, beam steering, and acoustic artifacts is explained in detail. The book discusses the principles of B-mode, M-mode, and Doppler ultrasound, along with their clinical applications. Advanced ultrasound techniques, including harmonic imaging, compounding, and elastography, are presented with a focus on the physical principles that enhance image quality and provide new diagnostic information. Nuclear medicine imaging, encompassing SPECT and PET, is examined from the perspective of radioactive decay, radiopharmaceutical properties, and radiation detection. The principles of gamma ray interactions with matter, scintillation detectors, and positron annihilation are explained. The book delves into the physics of image reconstruction for single-photon emission computed tomography (SPECT) and positron emission tomography (PET), discussing factors that influence image quality, such as sensitivity, spatial resolution, and scatter correction. The role of radiotracers and their pharmacokinetic behavior in delineating physiological processes is also highlighted. The volume also addresses other emerging and specialized imaging modalities. It explores the principles of optical imaging, including microscopy and optical coherence tomography (OCT), focusing on light-matter interactions and the generation of high-resolution images of biological tissues. The physics of contrast agents, both for conventional and advanced imaging techniques, is discussed, including their mechanisms of action and their impact on image signal. Innovation and Future Directions: A strong emphasis is placed on the ongoing innovations shaping the field of imaging science. The book critically analyzes the advancements in detector technology, signal processing, and artificial intelligence (AI) applications in image analysis and reconstruction. It discusses how AI is being integrated to improve image quality, reduce scan times, automate image segmentation, and aid in disease diagnosis and characterization. The impact of machine learning algorithms on image interpretation and the development of predictive models is explored. Furthermore, the book examines the evolution of hardware, including the development of higher magnetic field strengths in MRI, novel X-ray sources and detectors, and more sensitive ultrasound transducers. It discusses the advancements in multi-modal imaging, where different imaging techniques are combined to provide complementary information, and the challenges and opportunities associated with integrating data from diverse sources. The discussion extends to the development of novel imaging probes and molecular imaging agents, which are poised to transform our ability to visualize biological processes at the molecular level. Educational Approach: The content is presented in a clear, logical, and accessible manner. Each chapter builds upon foundational concepts, progressively introducing more complex topics. Numerous illustrations, diagrams, and mathematical derivations are included to facilitate understanding. Problem sets are provided at the end of each chapter to reinforce learning and encourage critical thinking. The book encourages readers to develop a quantitative understanding of imaging principles, enabling them to critically evaluate imaging technologies and their limitations. The authors emphasize the importance of understanding the physics to optimize imaging protocols, interpret images accurately, and contribute to the development of future imaging solutions. The aim is to equip readers with a robust scientific foundation that transcends specific technologies, allowing them to adapt to and drive future advancements in the dynamic field of imaging science.

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