| PET/MRI衰减校正技术研究进展 |
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| 引用本文： | 王海鹏,樊馨,贠明凯,章志明,刘宇,单保慈. PET/MRI衰减校正技术研究进展[J]. 中国医学影像技术, 2014, 30(2): 295-299 |
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| 作者姓名： | 王海鹏 樊馨 贠明凯 章志明 刘宇 单保慈 |
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| 作者单位： | 中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049;中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049;中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049;中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049;中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049;中国科学院高能物理研究所核辐射与核能技术重点实验室, 北京 100049;北京市射线成像技术与装备工程技术研究中心, 北京 100049 |
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| 基金项目： | 国家自然科学基金（11175200）；中国科学院知识创新工程重要方向项目（2A20113111110C010）。 |
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| 摘 要： | PET/MRI是近年兴起的新型多模式成像设备。PET图像需要利用衰减图进行衰减校正，从而得到真实的放射性药物浓度的分布信息。PET/MRI利用MRI数据得到衰减图对PET进行校正，其获取衰减图的方法是PET/MRI系统的关键技术。PET/MRI衰减校正的方法主要有分割法、地图集法和发射数据重建法。本文介绍这3种方法的原理、校正效果及优缺点，并对PET/MRI衰减校正技术的发展方向进行展望。
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| 关 键 词： | 正电子发射断层显象术 磁共振成像 衰减校正 分割法 地图集法 发射数据重建法 |
| 收稿时间： | 2013-08-12 |
| 修稿时间： | 2013-12-30 |
Developments of attenuation correction for PET/MRI |
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| WANG Hai-peng,FAN Xin,YUN Ming-kai,ZHANG Zhi-ming,LIU Yu and SHAN Bao-ci. Developments of attenuation correction for PET/MRI[J]. Chinese Journal of Medical Imaging Technology, 2014, 30(2): 295-299 |
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| Authors: | WANG Hai-peng FAN Xin YUN Ming-kai ZHANG Zhi-ming LIU Yu SHAN Bao-ci |
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| Affiliation: | Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China;Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China;Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China;Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China;Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China;Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China |
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| Abstract: | PET/MRI as a new hybrid imaging device which has developed rapidly in recent years. In order to obtain quantitative activity distribution, an attenuation map is required for PET attenuation correction (AC). In PET/MRI system, the attenuation map was obtained from MRI data, and the relative techniques were the key of AC technology. Methods for AC in PET/MRI can be categorized into segmentation method, atlas method and emission-based reconstruction method. The principle, effect, merit and demerit of these methods were described, and the developments of AC in PET/MRI were reviewed in this article. |
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| Keywords: | Positron-emission tomography Magnetic resonance imaging Attenuation correction Segmentation method Atlas method Emission-based reconstruction method |
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