Flexible
发表于 2025-3-21 19:47:38
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逢迎春日
发表于 2025-3-21 22:04:01
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羽毛长成
发表于 2025-3-22 00:55:17
Miscellaneous Topics,n the magnetic field from one point in space to another. Also, each gradient produces the same basic effect on protons: the vector precession frequencies are changed. Therefore, the particular task each gradient performs is determined by essentially one thing: . in the pulse cycle the gradient is applied.
BULLY
发表于 2025-3-22 07:52:01
Overview,in fact, there will be times when we must cross the “border” from one division to the other when considering certain topics. This will become clearer as we proceed, so let us begin with the first area: how we create tissue contrast in MRI.
避开
发表于 2025-3-22 08:43:48
Radiofrequency Pulse,ticle or a magnetizable substance would experience will vary in time from a maximum in one direction to a maximum in the opposite direction. It turns out that this variation in time can be mathematically described with a simple sine or cosine function.
不发音
发表于 2025-3-22 15:50:30
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石墨
发表于 2025-3-22 20:12:54
icated mathematics and physics typically used by physicists when explaining such phenomena. This book is mainly intended for radiologists and clinical physicians who are interested in learning the basic principles of how and why magnetic resonance imaging works but do not want to become excessively
轻浮思想
发表于 2025-3-22 22:05:02
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泥沼
发表于 2025-3-23 02:04:58
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Heresy
发表于 2025-3-23 08:20:58
https://doi.org/10.1007/978-1-4684-0333-6Magnetic field; Radiologists; electromagnetic; electromagnetic wave; imaging; magnetic resonance; tissue