| CT机和核磁共振成像(MRI)机之间的比较研究 |
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| 引用本文： | 吉永星,俎栋林.CT机和核磁共振成像(MRI)机之间的比较研究[J].CT理论与应用研究,2000,9(3):1-8. |
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| 作者姓名： | 吉永星 俎栋林 |
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| 作者单位： | [1]北京大学重离子物理研究所,北京 [2]北京大学肿瘤物理诊疗中心,北京 |
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| 基金项目： | 国家自然科学基金!（19675005） |
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| 摘 要： | ＣＴ和ＭＲＩ是当今应用最普遍的两大类临床影像诊断设备。本文应邀就普遍关心的问题对ＣＴ和ＭＲＩ两大设备在原理、性能、指标、功能、参数、敏感性、安全性、信号性质、图像标准、图像重建的方法学理论等诸多方面进行了有益和有意义的比较。并沿两类机器发展的轨迹追溯了两种影像在历史上的交汇点（源宗）。阐明了两套数学方法（Ｒａｄｏｎ变换和Ｆｏｕｒｉｅｒ变换）的平行发展根源于其信号性质的重大区别。ＭＲ是时域信号，而Ｘ
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| 关 键 词： | CT 核磁共振成像机 MRI 影像诊断设备 |
| 修稿时间： | 1999年12月1日 |
The Comparison Study Between CT & MRI |
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| Ji Yongxing,Zu Donglin and Bao Shanglian.The Comparison Study Between CT & MRI[J].Computerized Tomography Theory and Applications,2000,9(3):1-8. |
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| Authors: | Ji Yongxing Zu Donglin and Bao Shanglian |
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| Abstract: | Both CT and MRI are the most widely used clinical imaging facilities nowadays. This article is invited to give a significant and valuable comparison between CT and MRI in many aspects, such as imaging principles, performances, demand, features, parameters, sensibilities, securities, nature of signals, signals standards, theories of reconstruction methods, etc. It also traces back to the history resemblance of these two methods, and expounds that the sole development of these two mathematical methods (Radon Transform & Fourier Transform) roots in the distinct difference between CT and MR signals. Signal of MR is in time domain and signal of X-ray is in space domain. It is also pointed out that the mathematical foundation of PET, SPECT, OCT, UCT are of the same clan, except the MRI. |
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| Keywords: | CT TRI Flitered Back Projection Radon Transfer Fourier Imaging |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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