| 书目名称 | Clinical MR Imaging and Physics | | 副标题 | A Tutorial | | 编辑 | Haris S. Chrysikopoulos | | 视频video | | | 概述 | Clear, direct and succint description of the Physics of Magnetic Resonance.Description of the practical aspects of MR Imaging in a unique way, that has not been seen before.Includes supplementary mate | | 图书封面 |  | | 描述 | Keywords Spin › Electromagnetic radiation › Resonance › Nucleus › Hydrogen › Proton › Certain atomic nuclei possess inherent magnetic Let us summarize the MRI procedure. Te patient properties called spin, and can interact with electro- is placed in a magnetic feld and becomes temporarily 1 magnetic (EM) radiation through a process called magnetized. Resonance is achieved through the - resonance. When such nuclei absorb EM energy they plication of specifc pulses of EM radiation, which is proceed to an excited, unstable confguration. Upon absorbed by the patient. Subsequently, the excess - return to equilibrium, the excess energy is released, ergy is liberated and measured. Te captured signal producing the MR signal. Tese processes are not is processed by a computer and converted to a gray random, but obey predefned rules. scale (MR) image. Te simplest nucleus is that of hydrogen (H), con- Why do we need to place the patient in a m- sisting of only one particle, a proton. Because of its net? Because the earth’s magnetic feld is too weak to abundance in humans and its strong MR signal, H be clinically useful; it varies from 0. 3–0. 7 Gauss (G). is the most useful nucleus for clinical | | 出版日期 | Book 2009 | | 关键词 | MR Angiography; MR Physics; MR imaging; angiography; diagnosis; magnetic resonance; magnetic resonance ima | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-540-78023-6 | | isbn_softcover | 978-3-540-77999-5 | | isbn_ebook | 978-3-540-78023-6 | | copyright | Springer-Verlag Berlin Heidelberg 2009 |
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发表于 2025-3-21 19:59:03
